NEW HOLLand T8030 MASTER Tractor Full Service Repair Manual
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T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
1
NOTE: Engine repair information is not contained within this tractor Repair Manual. For engine repair, refer to
publication number 87515682 for the 8.3 & 9.0L 6 Cylinder, 24 Valve CNH Engine with High Pressure Common
Rail Fuel System.
STANDARD TORQUE SPECIFICATIONS ...................................................................... SECTION 00, CHAPTER 1
TORQUE SPECIFICATIONS - METRIC HARDWARE ............................................................................... 00-1-4
TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS ................................................................ 00-1-5
TORQUE SPECIFICATIONS - STEEL HYDRAULIC FITTINGS ................................................................ 00-1-6
SAFETY, GENERAL INFORMATION, MAINTENANCE SCHEDULE ............................. SECTION 00, CHAPTER 2
SAFETY ...................................................................................................................................................... 00-2-3
GENERAL INFORMATION ......................................................................................................................... 00-2-5
LUBRICATION/MAINTENANCE CHART ................................................................................................... 00-2-6
SYSTEM CAPACITIES ............................................................................................................................... 00-2-7
ENGINE REMOVAL AND INSTALLATION ...................................................................... SECTION 10, CHAPTER 1
ENGINE REMOVAL .................................................................................................................................... 10-1-3
ENGINE INSTALLATION .......................................................................................................................... 10-1-10
FUEL TANK / FUEL SENDER REMOVAL AND INSTALLATION .................................... SECTION 10, CHAPTER 2
SPECIAL TORQUES .................................................................................................................................. 3001-3
FUEL TANK REMOVAL AND INSTALLATION .......................................................................................... 3001-3
FUEL LEVEL SENDER REMOVAL AND INSTALLATION ........................................................................ 3001-10
HOOD REMOVAL ............................................................................................................ SECTION 10, CHAPTER 3
HOOD REMOVAL ....................................................................................................................................... 10-3-3
HOOD INSTALLATION ............................................................................................................................... 10-3-5
COOLING SYSTEM MODULE REMOVAL AND INSTALLATION ................................... SECTION 10, CHAPTER 4
COOLING MODULE REMOVAL ................................................................................................................ 10-4-3
COOLING MODULE INSTALLATION ........................................................................................................ 10-4-7
VISCOUS FAN DRIVE TEST ........................................................................................... SECTION 10, CHAPTER 5
REQUIRED TOOLS .................................................................................................................................... 10-5-3
DIAGNOSTIC PROCEDURE ...................................................................................................................... 10-5-4
FAN SPEED TEST ..................................................................................................................................... 10-5-7
POWERSHIFT TRANSMISSION SYSTEM -
HOW IT WORKS AND TROUBLESHOOTING ................................................................ SECTION 21, CHAPTER 1
TRANSMISSION SYSTEM INTRODUCTION ............................................................................................ 21-1-3
TRANSMISSION SYSTEM CONTROLS .................................................................................................... 21-1-5
TRANSMISSION SYSTEM COMPONENTS .............................................................................................. 21-1-6
TRANSMISSION LUBE AND DISTRIBUTION TUBES .............................................................................. 21-1-8
POWERSHIFT TRANSMISSION CLUTCH LAYOUT ............................................................................... 21-1-10
POWERSHIFT VALVE CLUTCH ENGAGEMENTS ................................................................................. 21-1-11
POWER FLOW (FORWARD SPEEDS) ................................................................................................... 21-1-12
POWER FLOW (REVERSE SPEEDS) ..................................................................................................... 21-1-30
POWER FLOW (FORWARD CREEPER DRIVE SPEEDS) ..................................................................... 21-1-34
POWER FLOW (REVERSE CREEPER DRIVE SPEEDS) ...................................................................... 21-1-40
INCHING VALVE OPERATION ................................................................................................................ 21-1-42
INSTRUMENTATION CLUSTER - TRANSMISSION LEAKAGE CHECK ................................................ 21-1-46
MASTER CLUTCH PRESSURE CHECK ................................................................................................. 21-1-49
FRONT FRAME TO SPEED TRANSMISSION SPLIT ..................................................... SECTION 21, CHAPTER 2
SPECIAL TOOLS ........................................................................................................................................ 21-2-3
SPECIAL TORQUES .................................................................................................................................. 21-2-3
FRONT FRAME TO SPEED TRANSMISSION SPLIT ............................................................................... 21-2-4
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
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SPEED TO RANGE TRANSMISSION SPLIT .................................................................. SECTION 21, CHAPTER 3
SPECIAL TOOLS ........................................................................................................................................ 21-3-3
SPECIAL TORQUES .................................................................................................................................. 21-3-3
SPEED TO RANGE TRANSMISSION SPLIT ............................................................................................. 21-3-4
Removal .................................................................................................................................................... 21-3-4
Installation ................................................................................................................................................. 21-3-7
SPEED TRANSMISSION ................................................................................................. SECTION 21, CHAPTER 4
SPECIFICATIONS ...................................................................................................................................... 21-4-4
SPECIAL TORQUES .................................................................................................................................. 21-4-4
TROUBLESHOOTING AFTER SPEED TRANSMISSION REPAIR ........................................................... 21-4-4
SPECIAL TOOLS ........................................................................................................................................ 21-4-5
SPEED TRANSMISSION WITH CREEP OPTION ..................................................................................... 21-4-6
ASSEMBLING THE COUNTERSHAFT WITH CREEPER SPEED CLUTCH .......................................... 21-4-14
TRANSMISSION ASSEMBLY WITH CREEP OPTION ............................................................................ 21-4-78
TRANSMISSION ASSEMBLY WITHOUT CREEP OPTION .................................................................... 21-4-80
RANGE TRANSMISSION TO REAR FRAME SPLIT ....................................................... SECTION 21, CHAPTER 5
SPECIAL TOOLS ........................................................................................................................................ 21-5-3
SPECIAL TORQUES .................................................................................................................................. 21-5-3
RANGE TRANSMISSION TO REAR FRAME SPLIT ................................................................................. 21-5-4
Disassembly .............................................................................................................................................. 21-5-4
Assembly ................................................................................................................................................... 21-5-7
RANGE TRANSMISSION INCLUDING FWD CLUTCH/PARK BRAKE ........................... SECTION 21, CHAPTER 6
SPECIFICATIONS ...................................................................................................................................... 21-6-3
TROUBLESHOOTING AFTER RANGE TRANSMISSION REPAIR .......................................................... 21-6-3
SPECIAL TORQUES .................................................................................................................................. 21-6-3
SPECIAL TOOLS ........................................................................................................................................ 21-6-4
RANGE TRANSMISSION ........................................................................................................................... 21-6-5
Removing the Shaft Master Clutch ........................................................................................................... 21-6-5
Removing the Input Shaft, Countershaft and Mechanical Front Drive (FWD) / Park Brake Assembly ..... 21-6-7
Disassembly of the Master Clutch ........................................................................................................... 21-6-12
Exploded View of the Master Clutch ....................................................................................................... 21-6-14
Assembly of the Master Clutch ............................................................................................................... 21-6-15
Disassembly of the Range Transmission Input Shaft ............................................................................. 21-6-16
Exploded View of the Range Transmission Input Shaft .......................................................................... 21-6-22
Assembly of the Range Transmission Input Shaft .................................................................................. 21-6-23
Cross-Section of Input Shaft ................................................................................................................... 21-6-32
Disassembly of the Range Transmission Countershaft .......................................................................... 21-6-33
Exploded View of the Range Transmission Countershaft ....................................................................... 21-6-37
Assembly of the Range Transmission Countershaft ............................................................................... 21-6-38
Front Wheel Drive (FWD) - Emergency Brake Disassembly .................................................................. 21-6-45
Exploded View of FWD and Emergency Brake ....................................................................................... 21-6-51
Assembly of the FWD / Emergency Brake .............................................................................................. 21-6-52
Exploded View of the Range Transmission Countershaft, Input Shaft, and FWD Input Shaft ................ 21-6-66
Installing the Range Transmission Countershaft, Input Shaft,
and FWD Input Shaft into the Range Transmission Housing .................................................................. 21-6-67
SETTING THE END PLAY OF THE RANGE TRANSMISSION COUNTERSHAFT AND INPUT SHAFT 21-6-73
Installing the Range Input Master Clutch ................................................................................................ 21-6-75
TRANSMISSION CONTROL VALVES AND INCHING VALVE ....................................... SECTION 21, CHAPTER 7
SPECIAL TORQUES .................................................................................................................................. 21-7-3
POWERSHIFT TRANSMISSION CONTROL VALVES .............................................................................. 21-7-3
TRANSMISSION CONTROL VALVE CONFIGURATION .......................................................................... 21-7-4
INCHING VALVE ...................................................................................................................................... 21-7-15
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REAR FRAME .................................................................................................................. SECTION 21, CHAPTER 8
SPECIFICATIONS ...................................................................................................................................... 21-8-3
SPECIAL TORQUES .................................................................................................................................. 21-8-3
SPECIAL TOOLS ........................................................................................................................................ 21-8-3
DIFFERENTIAL .......................................................................................................................................... 21-8-4
Removal .................................................................................................................................................... 21-8-4
Disassembly ............................................................................................................................................ 21-8-10
PINION SHAFT ......................................................................................................................................... 21-8-14
Removal and Disassembly ...................................................................................................................... 21-8-14
Assembly and Installation ....................................................................................................................... 21-8-16
DIFFERENTIAL ASSEMBLY .................................................................................................................... 21-8-24
DIFFERENTIAL INSTALLATION .............................................................................................................. 21-8-29
ADJUSTING THE DIFFERENTIAL PRELOAD ......................................................................................... 21-8-35
ADJUSTING THE RING AND PINION BACKLASH ................................................................................. 21-8-37
BEVEL PINION AND GEAR TOOTH CONTACT CHECK ........................................................................ 21-8-38
HYDRAULIC PUMP DRIVE ............................................................................................. SECTION 21, CHAPTER 9
SPECIAL TORQUES .................................................................................................................................. 21-9-3
SPECIFICATIONS ...................................................................................................................................... 21-9-3
PUMP DRIVE .............................................................................................................................................. 21-9-3
Removal .................................................................................................................................................... 21-9-3
Disassembly .............................................................................................................................................. 21-9-4
Assembly ................................................................................................................................................... 21-9-7
Installation ............................................................................................................................................... 21-9-12
FRONT WHEEL DRIVE CONTROL SYSTEM - HOW IT WORKS .................................. SECTION 25, CHAPTER 1
FRONT WHEEL DRIVE (FWD) .................................................................................................................. 25-1-3
ELECTRONIC FRONT WHEEL DRIVE (FWD) CONTROL ....................................................................... 25-1-5
FRONT WHEEL DRIVE (FWD) CONTROL MODES ................................................................................. 25-1-7
FRONT WHEEL DRIVE (FWD) FUNCTIONAL TESTS .............................................................................. 25-1-8
TROUBLESHOOTING .............................................................................................................................. 25-1-10
DIFFERENTIAL LOCK CONTROL SYSTEM - HOW IT WORKS .................................... SECTION 25, CHAPTER 2
DIFFERENTIAL LOCK ................................................................................................................................ 25-2-3
ELECTRONIC DIFFERENTIAL LOCK CONTROL ..................................................................................... 25-2-5
DIFFERENTIAL LOCK CONTROL MODES ............................................................................................... 25-2-7
DIFFERENTIAL LOCK CONTROL ............................................................................................................. 25-2-8
DIFFERENTIAL LOCK FUNCTIONAL TESTS ........................................................................................... 25-2-9
TROUBLESHOOTING .............................................................................................................................. 25-2-12
TROUBLESHOOTING .............................................................................................................................. 25-2-14
PTO/DIFFERENTIAL LOCK VALVE CIRCUIT ......................................................................................... 25-2-15
FRONT WHEEL DRIVE OUTPUT SHAFT ....................................................................... SECTION 25, CHAPTER 3
SPECIAL TORQUES .................................................................................................................................. 25-3-3
FWD OUTPUT SHAFT ............................................................................................................................... 25-3-4
FWD Output Shaft Removal ...................................................................................................................... 25-3-4
FWD Output Shaft Disassembly ............................................................................................................... 25-3-5
FWD Output Shaft Assembly .................................................................................................................... 25-3-9
FRONT WHEEL DRIVE DRIVE SHAFT........................................................................... SECTION 25, CHAPTER 4
SPECIAL TORQUES .................................................................................................................................. 25-4-3
FWD DRIVE SHAFT ................................................................................................................................... 25-4-4
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
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SUSPENSION FWD AXLE SYSTEM - HOW IT WORKS AND TROUBLESHOOTING ..SECTION 25, CHAPTER 5
SUSPENDED FWD AXLE OPERATION ................................................................................................... 25-5-3
SUSPENDED MFD AXLE- CALIBRATION MODE .................................................................................... 25-5-9
ERROR TABLE ......................................................................................................................................... 25-5-11
SUSPENDED FWD AXLE- MANUAL OPERATION MODE (TEST MODE) ............................................ 25-5-13
SUSPENDED FWD AXLE- DEMONSTRATION MODE .......................................................................... 25-5-16
SUSPENSION FWD AXLE REMOVAL ............................................................................SECTION 25, CHAPTER 6
SUSPENDED FWD AXLE .......................................................................................................................... 25-6-3
Removal .................................................................................................................................................... 25-6-3
Installation ................................................................................................................................................. 25-6-5
SUPERSTEER AXLE REMOVAL AND INSTALLATION ................................................. SECTION 25, CHAPTER 7
SPECIAL TORQUES .................................................................................................................................. 25-7-3
SPECIAL TOOLS ........................................................................................................................................ 25-7-3
FRONT AXLE REMOVAL ........................................................................................................................... 25-7-4
FRONT AXLE INSTALLATION ................................................................................................................... 25-7-7
LIMITED SLIP FWD DIFFERENTIAL ............................................................................... SECTION 25, CHAPTER 8
SPECIFICATIONS ...................................................................................................................................... 25-8-2
SPECIAL TORQUES .................................................................................................................................. 25-8-2
SPECIAL TOOLS ........................................................................................................................................ 25-8-2
DIFFERENTIAL CARRIER ASSEMBLY REMOVAL .................................................................................. 25-8-3
DIFFERENTIAL DISASSEMBLY ................................................................................................................ 25-8-4
Pinion Disassembly ................................................................................................................................... 25-8-8
DIFFERENTIAL ASSEMBLY .................................................................................................................... 25-8-11
DIFFERENTIAL CARRIER ASSEMBLY ................................................................................................... 25-8-15
Pinion Position and Assembly ................................................................................................................. 25-8-15
Shim Pack Thickness Chart .................................................................................................................... 25-8-16
Setting The Pinion Depth ........................................................................................................................ 25-8-17
Adjusting Bearing Preload ....................................................................................................................... 25-8-20
DIFFERENTIAL INSTALLATION .............................................................................................................. 25-8-22
Checking Backlash .................................................................................................................................. 25-8-23
Ring Gear and Pinion Tooth Pattern Interpretation ................................................................................. 25-8-25
Installation of Carrier Assembly to Axle Housing .................................................................................... 25-8-27
LOCKING FWD DIFFERENTIAL...................................................................................... SECTION 25, CHAPTER 9
SPECIFICATIONS ...................................................................................................................................... 25-9-3
SPECIAL TORQUES .................................................................................................................................. 25-9-3
SPECIAL TOOLS ........................................................................................................................................ 25-9-3
REMOVAL OF THE FRONT DIFFERENTIAL CARRIER ASSEMBLY ....................................................... 25-9-4
REMOVAL OF THE FRONT DIFFERENTIAL FROM THE CARRIER HOUSING ..................................... 25-9-5
DISASSEMBLY OF THE DIFFERENTIAL .................................................................................................. 25-9-7
PINION DISASSEMBLY ............................................................................................................................. 25-9-9
ASSEMBLY OF THE DIFFERENTIAL ...................................................................................................... 25-9-12
DIFFERENTIAL CARRIER ASSEMBLY ................................................................................................... 25-9-16
SETTING THE PINION DEPTH ................................................................................................................ 25-9-18
ADJUSTING BEARING PRELOAD .......................................................................................................... 25-9-21
DIFFERENTIAL INSTALLATION .............................................................................................................. 25-9-23
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
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FWD PLANETARY HUB, STEERING KNUCKLE AND AXLE DRIVE SHAFT .............. SECTION 25, CHAPTER 10
SPECIFICATIONS .................................................................................................................................... 25-10-3
SPECIAL TORQUES ................................................................................................................................ 25-10-3
SPECIAL TOOLS ...................................................................................................................................... 25-10-3
PLANETARY HUB DISASSEMBLY .......................................................................................................... 25-10-4
STEERING KNUCKLE AND KINGPIN DISASSEMBLY ........................................................................... 25-10-9
AXLE DRIVE SHAFT DISASSEMBLY .................................................................................................... 25-10-13
AXLE SHAFT ASSEMBLY ...................................................................................................................... 25-10-14
KINGPIN ASSEMBLY ............................................................................................................................. 25-10-16
STEERING KNUCKLE ASSEMBLY ....................................................................................................... 25-10-20
PLANETARY HUB ASSEMBLY .............................................................................................................. 25-10-25
Ten Bolt Axle Only ................................................................................................................................ 25-10-30
Twelve Bolt Axle Only ........................................................................................................................... 25-10-34
All Axles ................................................................................................................................................ 25-10-39
SUSPENSION FWD AXLE............................................................................................. SECTION 25, CHAPTER 11
SPECIAL TORQUES ................................................................................................................................ 25-11-2
SUSPENSION FWD AXLE ....................................................................................................................... 25-11-3
Disassembly ............................................................................................................................................ 25-11-3
Assembly ............................................................................................................................................... 25-11-13
Position Sensor Adjustment .................................................................................................................. 25-11-25
SUPERSTEER AXLE VERTICAL CONTROL LINKAGE ............................................... SECTION 25, CHAPTER 12
SPECIAL TORQUES ................................................................................................................................ 25-12-3
VERTICAL LINK DISASSEMBLY AND REPAIR ...................................................................................... 25-12-3
Vertical Link Removal ............................................................................................................................. 25-12-3
Roller Replacement ................................................................................................................................. 25-12-4
Articulation Bearing Removal and Installation ......................................................................................... 25-12-5
REAR AXLE AND PLANETARIES ................................................................................... SECTION 27, CHAPTER 1
SPECIAL TOOLS ........................................................................................................................................ 27-1-3
SPECIAL TORQUES .................................................................................................................................. 27-1-5
SPECIFICATIONS ...................................................................................................................................... 27-1-5
GENERAL INFORMATION ......................................................................................................................... 27-1-5
REAR AXLE ................................................................................................................................................ 27-1-6
AXLE HOUSING DISASSEMBLY ............................................................................................................... 27-1-9
PLANETARY DISASSEMBLY .................................................................................................................. 27-1-11
DIFFERENTIAL CARRIER SEAL REPLACEMENT ................................................................................. 27-1-13
PLANETARY ASSEMBLY - THREE PIN .................................................................................................. 27-1-14
PLANETARY ASSEMBLY - FOUR PIN .................................................................................................... 27-1-15
AXLE HOUSING ASSEMBLY ................................................................................................................... 27-1-18
HOW TO DETERMINE RAM PRESSURE ............................................................................................... 27-1-23
AXLE INSTALLATION .............................................................................................................................. 27-1-26
AXLE SEAL WEAR SLEEVE INSTALLATION (4-Inch Axle Only) ........................................................... 27-1-30
POWER TAKE OFF CONTROL SYSTEM - HOW IT WORKS ........................................ SECTION 31, CHAPTER 1
POWER TAKE OFF .................................................................................................................................... 31-1-3
ELECTRONIC PTO CONTROL .................................................................................................................. 31-1-4
PTO SYSTEM CONTROL .......................................................................................................................... 31-1-7
PTO CONTROL MODES ............................................................................................................................ 31-1-8
PTO VALVE OIL SUPPLY ........................................................................................................................ 31-1-10
PTO DIFFERENTIAL LOCK VALVE ......................................................................................................... 31-1-11
TROUBLESHOOTING .............................................................................................................................. 31-1-12
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
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PTO CLUTCH ASSEMBLY - SINGLE, REVERSIBLE AND DUAL SPEED ..................... SECTION 31, CHAPTER 2
SPECIAL TOOLS ........................................................................................................................................ 31-2-3
SPECIAL TORQUES .................................................................................................................................. 31-2-3
PTO CLUTCH ASSEMBLY ......................................................................................................................... 31-2-4
General ..................................................................................................................................................... 31-2-4
PTO CLUTCH SERVICE ............................................................................................................................ 31-2-4
Removal .................................................................................................................................................... 31-2-4
Disassembly .............................................................................................................................................. 31-2-6
Assembly ................................................................................................................................................. 31-2-16
Exploded View of PTO Clutch ............................................................................................................... 31-2-16
Cross Section of PTO Clutch and Output Shaft Assembly .................................................................... 31-2-31
SINGLE SPEED REVERSIBLE SHAFT PTO ........................................................................................... 31-2-32
Disassembly ............................................................................................................................................ 31-2-32
Assembly ................................................................................................................................................. 31-2-35
Exploded View of PTO Output Shaft and Driven Gear Assembly ......................................................... 31-2-35
SINGLE SPEED REVERSIBLE SHAFT PTO DRIVEN GEAR ................................................................. 31-2-39
Removal .................................................................................................................................................. 31-2-39
Assembly ................................................................................................................................................. 31-2-41
Reversible PTO Output Shaft Bearing Adjustment ................................................................................. 31-2-43
SINGLE SPEED REVERSIBLE SHAFT PTO ........................................................................................... 31-2-45
Cross Section of PTO Output Shaft Assembly ...................................................................................... 31-2-45
BRAKE VALVE ................................................................................................................. SECTION 33, CHAPTER 1
SPECIAL TORQUES .................................................................................................................................. 33-2-2
BRAKE VALVE ........................................................................................................................................... 33-2-3
Removal .................................................................................................................................................... 33-2-3
Disassembly .............................................................................................................................................. 33-2-4
Assembly ................................................................................................................................................... 33-2-6
Installation ................................................................................................................................................. 33-2-8
BRAKE CYLINDERS ........................................................................................................ SECTION 33, CHAPTER 2
SPECIAL TORQUES .................................................................................................................................. 33-2-3
SPECIFICATIONS ...................................................................................................................................... 33-2-3
BRAKE CYLINDERS .................................................................................................................................. 33-2-3
Disassembly .............................................................................................................................................. 33-2-3
Assembly ................................................................................................................................................... 33-2-5
HYDRAULIC SCHEMATIC POSTER - EUROPEAN ................................................................................. 87518877
HOW TO READ SYMBOLS IN A HYDRAULIC SCHEMATIC ......................................... SECTION 35, CHAPTER 1
HOW TO READ SYMBOLS IN A HYDRAULIC SCHEMATIC .................................................................... 35-1-3
SIMPLE SCHEMATIC ............................................................................................................................... 35-1-13
COMMON SYMBOLS ............................................................................................................................... 35-1-15
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
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HYDRAULIC SYSTEM - HOW IT WORKS WITH TROUBLESHOOTING ....................... SECTION 35, CHAPTER 2
GENERAL INTRODUCTION ...................................................................................................................... 35-2-3
REAR CHARGE/LUBE PUMP PRESSURE TEST ................................................................................... 35-2-19
REGULATED SYSTEM PRESSURE TEST AND ADJUSTMENT PROCEDURE ................................... 35-2-21
FRONT/REGULATED SYSTEM PUMP FLOW TEST .............................................................................. 35-2-25
STEERING RELIEF PRESSURE TEST AND ADJUSTMENT PROCEDURE ......................................... 35-2-27
STEERING SYSTEM PROBLEMS ........................................................................................................... 35-2-29
PRIORITY AND REGULATOR VALVE .................................................................................................... 35-2-31
PFC AXIAL PISTON PUMP ...................................................................................................................... 35-2-34
PFC PUMP HIGH PRESSURE STANDBY CHECK AND ADJUSTMENT PROCEDURE ....................... 35-2-42
PFC PISTON PUMP FLOW TEST ........................................................................................................... 35-2-43
PFC PISTON PUMP FLOW COMPENSATOR SETTING ........................................................................ 35-2-44
STANDARD PUMP COMPENSATOR VALVE INSPECTION .................................................................. 35-2-46
PFC PUMP OPERATIONAL PROBLEMS ................................................................................................ 35-2-47
PTO AND DIFFERENTIAL LOCK VALVE........................................................................ SECTION 35, CHAPTER 3
SPECIAL TORQUES .................................................................................................................................. 35-3-2
SPECIFICATIONS ...................................................................................................................................... 35-3-2
PTO AND DIFFERENTIAL LOCK VALVE .................................................................................................. 35-3-3
REMOTE VALVE AND COUPLER SERVICE .................................................................. SECTION 35, CHAPTER 4
SPECIAL TORQUES .................................................................................................................................. 35-4-2
REMOTE VALVE AND COUPLER SERVICE ............................................................................................ 35-4-3
REMOTE VALVE REMOVAL AND SERVICE ............................................................................................ 35-4-5
REMOTE COUPLERS .............................................................................................................................. 35-4-13
REMOTE HYDRAULIC SYSTEM - HOW IT WORKS AND TROUBLESHOOTING ........ SECTION 35, CHAPTER 5
REMOTE HYDRAULIC SYSTEM INTRODUCTION .................................................................................. 35-5-3
REMOTE VALVE SYSTEM COMPONENTS ............................................................................................. 35-5-5
REMOTE VALVE SYSTEM CONTROLS ................................................................................................. 35-5-10
REMOTE VALVE OPERATION ................................................................................................................ 35-5-14
REMOTE VALVE PROBLEMS AND WHERE TO LOOK ......................................................................... 35-5-23
REMOTE VALVE PROPORTIONAL CURRENT CONTROL (PCC) SOLENOID OPERATION .............. 35-5-25
REMOTE VALVE SYSTEM TESTING ...................................................................................................... 35-5-26
REMOTE VALVE HIGH PRESSURE TEST ............................................................................................. 35-5-27
PFC PUMP HIGH PRESSURE STANDBY CHECK AND ADJUSTMENT PROCEDURE ....................... 35-5-28
PFC PISTON PUMP FLOW TEST ........................................................................................................... 35-5-29
STANDARD PUMP COMPENSATOR VALVE INSPECTION .................................................................. 35-5-30
REMOTE VALVE SIGNAL CHECK AND HITCH SIGNAL CHECK .......................................................... 35-5-31
REMOTE VALVE COUPLER TEST ......................................................................................................... 35-5-32
LOAD CHECK INSPECTION .................................................................................................................... 35-5-33
OPERATIONAL PROBLEMS ................................................................................................................... 35-5-34
PRIORITY AND REGULATOR VALVE ............................................................................ SECTION 35, CHAPTER 6
SPECIAL TORQUES .................................................................................................................................. 35-6-3
PRIORITY VALVE AND REGULATOR ...................................................................................................... 35-6-4
Removal .................................................................................................................................................... 35-6-4
Disassembly .............................................................................................................................................. 35-6-6
Assembly ................................................................................................................................................... 35-6-9
Installation ............................................................................................................................................... 35-6-12
CROSS SECTION OF PRIORITY AND REGULATOR VALVE ................................................................ 35-6-14
CHARGE PUMP ............................................................................................................... SECTION 35, CHAPTER 7
Removal ...................................................................................................................................................... 35-7-3
Installation ................................................................................................................................................... 35-7-4
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PFC PISTON PUMP AND HYDRAULIC FILTER ............................................................. SECTION 35, CHAPTER 8
SPECIAL TORQUES .................................................................................................................................. 35-8-3
PFC PISTON PUMP ................................................................................................................................... 35-8-3
Removal .................................................................................................................................................... 35-8-3
Installation ................................................................................................................................................. 35-8-4
HITCH SYSTEM - HOW IT WORKS ................................................................................ SECTION 35, CHAPTER 9
THREE POINT HITCH ................................................................................................................................ 35-9-3
ELECTRONIC HITCH CONTROL .............................................................................................................. 35-9-4
ELECTRONIC HITCH CONTROL SYSTEM FEATURES .......................................................................... 35-9-7
HITCH CONTROL VALVE ........................................................................................................................ 35-9-14
SETUP / ADJUSTMENT SEQUENCE ...................................................................................................... 35-9-22
HITCH CONTROL VALVE .............................................................................................SECTION 35, CHAPTER 10
HITCH CONTROL VALVE ........................................................................................................................ 35-10-3
Removal .................................................................................................................................................. 35-10-3
Disassembly ............................................................................................................................................ 35-10-5
Assembly ................................................................................................................................................. 35-10-7
Installation ............................................................................................................................................... 35-10-9
HITCH CONTROL VALVE CROSS SECTION ....................................................................................... 35-10-11
TRACTOR HITCH ..........................................................................................................SECTION 35, CHAPTER 11
SPECIAL TORQUES ................................................................................................................................ 35-11-3
TRACTOR HITCH ..................................................................................................................................... 35-11-3
EDC PIN ASSEMBLY ............................................................................................................................. 35-11-20
POTENTIOMETER (HITCH POSITION SENSOR) ................................................................................ 35-11-21
CAM SWAY LIMITER ............................................................................................................................. 35-11-23
CAM BUMPERS FOR DRAFT ARM ....................................................................................................... 35-11-25
DRAWBAR, HIGH VERTICAL CAPACITY ............................................................................................. 35-11-26
STEERING COLUMN AND STEERING HAND PUMP .................................................... SECTION 41, CHAPTER 1
SPECIAL TOOLS ........................................................................................................................................ 41-1-2
SPECIAL TORQUES .................................................................................................................................. 41-1-3
STEERING COLUMN REMOVAL .............................................................................................................. 41-1-3
STEERING HAND PUMP SERVICE .......................................................................................................... 41-1-6
STEERING COLUMN ASSEMBLY ............................................................................................................. 41-1-8
WHEEL TOE IN SETTING SUPERSTEER FWD AXLE ..................................................SECTION 41, CHAPTER 2
WHEEL TOE IN SETTING .......................................................................................................................... 41-2-3
WHEEL TOE IN SETTING DIAGRAM ........................................................................................................ 41-2-9
SPECIAL TOOL LAYOUT DRAWINGS .................................................................................................... 41-2-10
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
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A/C TROUBLESHOOTING .............................................................................................. SECTION 50, CHAPTER 1
SAFETY PROCEDURES ............................................................................................................................ 50-1-5
SPECIAL TOOLS ........................................................................................................................................ 50-1-6
A/C THERMAL OPERATION ...................................................................................................................... 50-1-7
A/C SYSTEM COMPONENTS ................................................................................................................... 50-1-9
Cab HVAC Box Components - Automatic Temperature Control ............................................................... 50-1-9
Chassis Components .............................................................................................................................. 50-1-11
AUTOMATIC TEMPERATURE CONTROL (ATC) OPERATION ............................................................. 50-1-12
Operation Modes ..................................................................................................................................... 50-1-15
Automatic Mode .................................................................................................................................... 50-1-15
Defog Mode ........................................................................................................................................... 50-1-15
Automatic Operation Summary ............................................................................................................. 50-1-16
Defog/Dehumidify Operation Summary ................................................................................................. 50-1-17
ATC Fault Codes ..................................................................................................................................... 50-1-18
ATC Fault Code 111 .............................................................................................................................. 50-1-18
ATC Fault Code 112 .............................................................................................................................. 50-1-19
ATC Fault Code 115 .............................................................................................................................. 50-1-19
ATC Fault Code 116 .............................................................................................................................. 50-1-20
ATC Fault Code 120 .............................................................................................................................. 50-1-20
ATC Fault Code 121 .............................................................................................................................. 50-1-21
ATC Fault Code 122 .............................................................................................................................. 50-1-21
ATC Fault Code 125 .............................................................................................................................. 50-1-22
ATC Fault Code 126 .............................................................................................................................. 50-1-22
ATC Fault Code 127 .............................................................................................................................. 50-1-23
ATC Fault Code 128 .............................................................................................................................. 50-1-23
ATC Fault Code 129 .............................................................................................................................. 50-1-24
ATC Fault Code 130 .............................................................................................................................. 50-1-24
ATC Fault Code 131 .............................................................................................................................. 50-1-25
ATC Fault Code 132 .............................................................................................................................. 50-1-25
ATC Fault Code 133 .............................................................................................................................. 50-1-26
ATC Fault Code 134 .............................................................................................................................. 50-1-26
Locating System Problems Without Fault Codes ...................................................................................... 50-1-27
Controller-Based Resistance Tests ......................................................................................................... 50-1-27
ATC Controller Test (Connector J8 Test Points) ...................................................................................... 50-1-29
ATC Field Reported Symptoms/Causes ................................................................................................... 50-1-32
Compressor And Clutch ............................................................................................................................ 50-1-33
Operational Check .................................................................................................................................. 50-1-33
Electrical Test .......................................................................................................................................... 50-1-36
Compressor Clutch Control Circuit Test Procedure ................................................................................ 50-1-36
Service Note: Adjusting Clutch Air Gap .................................................................................................. 50-1-38
High And Low Pressure Switch Clutch Latching Circuit ............................................................................ 50-1-39
Background ............................................................................................................................................. 50-1-39
Possible Failure Modes - Fault Codes 129 and 134 ............................................................................... 50-1-40
Electrical Test .......................................................................................................................................... 50-1-41
High Pressure Switch and Circuit Test .................................................................................................... 50-1-41
Low Pressure Switch and Circuit Test .................................................................................................... 50-1-42
Heater Control Valve ................................................................................................................................. 50-1-43
Operational Check .................................................................................................................................. 50-1-43
Electrical Test .......................................................................................................................................... 50-1-44
Heater Control Valve Power, Signal and Ground Test ............................................................................ 50-1-44
Blower Speed And Temperature Control Potentiometers ......................................................................... 50-1-45
Background ............................................................................................................................................. 50-1-45
Possible Failure Modes - Fault Codes 120, 121 ..................................................................................... 50-1-45
Electrical Test .......................................................................................................................................... 50-1-46
Common Control Potentiometer and Circuit Test Procedure .................................................................. 50-1-46
T8010/T8020/T8030/T8040 MASTER TABLE OF CONTENTS
10
BLOWER AND BLOWER SPEED DRIVER ............................................................................................. 50-1-47
Background ............................................................................................................................................. 50-1-47
Power, Signal and Ground Circuit ........................................................................................................... 50-1-47
Possible Failure Modes ........................................................................................................................... 50-1-47
Blower Motor/Blower Driver Power, Signal and Ground Test ................................................................. 50-1-48
Cab And Evapator Temperature Sensors ................................................................................................. 50-1-49
Background ............................................................................................................................................. 50-1-49
Electrical Test .......................................................................................................................................... 50-1-51
Power Circuit ........................................................................................................................................... 50-1-51
Possible Failure Modes - Fault Codes 111, 115 and 116 ....................................................................... 50-1-52
Cab Temperature Sensor and Circuit Test ............................................................................................. 50-1-53
Evaporator Temperature Sensor and Circuit Test .................................................................................. 50-1-54
Controller Power, Ground, And ATC Switch ............................................................................................. 50-1-56
Background ............................................................................................................................................. 50-1-56
Power and Ground Circuit ....................................................................................................................... 50-1-56
Possible Failure Modes ........................................................................................................................... 50-1-56
Controller Power Supply and Ground Test ............................................................................................. 50-1-56
ATC Switch and Circuit Test ................................................................................................................... 50-1-57
Defog/Defrost Switch and Circuit Test .................................................................................................... 50-1-57
Cab Pressurizer Blower ............................................................................................................................ 50-1-58
Background ............................................................................................................................................. 50-1-58
Power and Ground .................................................................................................................................. 50-1-58
Cab Pressurizer Blower & Relay Power Supply and Ground Test .......................................................... 50-1-58
ACCESSING THE HVAC BOX ................................................................................................................. 50-1-59
STANDARD AIR CONDITIONING (STD) TROUBLESHOOTING ............................................................ 50-1-60
Standard A/C Operation ............................................................................................................................ 50-1-61
Smart Pressure Switch Cycling System .................................................................................................. 50-1-61
Standard A/C Controls and Their Function ............................................................................................. 50-1-62
Symptom-Based Standard A/C Troubleshooting ...................................................................................... 50-1-63
Standard Controller Test ........................................................................................................................... 50-1-65
Compressor And Clutch ............................................................................................................................ 50-1-67
Operational Check .................................................................................................................................. 50-1-67
Electrical Test – Compressor Clutch ....................................................................................................... 50-1-70
Clutch Relay Power Supply and Ground Test ......................................................................................... 50-1-71
Service Note: Adjusting Clutch Air Gap .................................................................................................. 50-1-72
High And Low Pressure Switch Clutch Latching Circuit ............................................................................ 50-1-73
Background ............................................................................................................................................. 50-1-73
Possible Failure Modes - Flashing Pressure Warning Lamp .................................................................. 50-1-74
Electrical Test – Pressure Switches ........................................................................................................ 50-1-75
High Pressure Switch and Circuit Test .................................................................................................... 50-1-75
Low Pressure Switch and Circuit Test .................................................................................................... 50-1-76
Heater Control Valve ................................................................................................................................. 50-1-77
Operational Check .................................................................................................................................. 50-1-77
Electrical Test .......................................................................................................................................... 50-1-78
Temperature Control Potentiometer ......................................................................................................... 50-1-79
Background ............................................................................................................................................. 50-1-79
Electrical Test .......................................................................................................................................... 50-1-79
Blower Speed Switch And Blower Motor .................................................................................................. 50-1-80
Background ............................................................................................................................................. 50-1-80
Power and Ground Circuit ....................................................................................................................... 50-1-80
Possible Failure Modes ........................................................................................................................... 50-1-80
Blower Speed Switch and Power Circuit Test ......................................................................................... 50-1-81
Blower Motor Power, and Control Circuit Test ........................................................................................ 50-1-81
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- This is a comprehensive service and repair manual for the NEW HOLLAND T8030 MASTER TRACTOR, containing essential technical information for maintenance, service, and troubleshooting.
- The manual is designed for both professional mechanics and DIY enthusiasts, providing easy-to-read text sections, top-quality diagrams, and step-by-step instructions for efficient repairs.
- It covers every single detail of the machine, including comprehensive diagrams, in-depth illustrations, and all the manufacturer's specifications and technical information.
- Available in English, the manual is in a file format that allows for easy zooming in and out, and it is fully printable for convenience.
- No waiting time for shipping or delivery, as it provides instant access to the necessary material for repairs, compatible with all versions of Windows and Mac.
- The manual includes information on MOT test checks, roadside repairs, routine maintenance, engine and associated systems, cooling, heating and air conditioning systems, fuel and exhaust systems, transmission, brakes, suspension, body equipment, electrical systems, wiring diagrams, tools, general repair procedures, fault finding, and a glossary of technical terms.
Whether you are a professional mechanic or a DIY enthusiast, this NEW HOLLAND T8030 MASTER TRACTOR Service Repair Manual is an invaluable resource for maintaining and repairing your machine.
