New Holland TT45A, TT50A Service Manual

87655301 3/07 1st Printing © 2007 CNH America LLC Printed In U.S.A. TT45A, TT50A REPAIR MANUAL COMPLETE CONTENTS SECTION 00 - GENERAL 2 ............................................ SECTION 10 - ENGINE 3 .............................................. SECTION 18 - CLUTCHES 10 ........................................... SECTION 21 - TRANSMISSION SYSTEM 11 .............................. SECTION 27 - MECHANICAL REAR WHEEL DRIVE 13 .................... SECTION 31 - POWER TAKE-OFF 15 .................................... SECTION 33 - BRAKING SYSTEM 16 .................................... SECTION 35 - HYDRAULIC SYSTEM 16 .................................. SECTION 41 - STEERING SYSTEMS 19 .................................. SECTION 44 - FRONT AXLE 20 ......................................... SECTION 55 - ELECTRICAL SYSTEM 21 ................................. SECTION 90 - BODYWORK 27 .......................................... The following pages are the collation of the contents pages from each section and chapter of the TT45A, TT50A Repair manual. Complete Repair part # 87655297. The sections used through out all New Holland product Repair manuals may not be used for each product. Each Repair manual will be made up of one or several books. Each book will be labeled as to which sections are in the overall Repair manual and which sections are in each book. The sections listed above are the sections utilized for the TT45A, TT50A Tractors.

2 SECTION 00 - GENERAL BOOK 1 - 87655298 Chapter 1 - General CONTENTS Section Description Page Federal Emissions Warranty 2 ..................................................... California Emission Control Warranty Statement 3 .................................... General Instructions 5 ............................................................ Important Notice 5 ............................................................ Shimming 5 .................................................................. Rotating Shaft Seals 5 ........................................................ O-Rings 6 ................................................................... Sealers 6 .................................................................... Bearings 6 ................................................................... Spring Pins 6 ................................................................ Precautionary Notice 7 ........................................................ Equipment Notice 7 ........................................................... Spare Parts Notice 7 .......................................................... General Notices 7 ............................................................ Health and Safety Precautions 8 ................................................... General Workshop Tools and Equipment 13 ..................................... Legal Aspects 13 ............................................................ Lubricants and Greases 13 ................................................... Precautionary Statements 17 ..................................................... Safety 18 ...................................................................... The Tractor 18 .............................................................. Driving the Tractor 19 ........................................................ Operating the Tractor 20 ...................................................... Operating the PTO 21 ........................................................ Servicing the Tractor 21 ...................................................... Diesel Fuel 22 .............................................................. Universal Symbols 23 ........................................................... Safety Decals 24 ................................................................ Instructional Decals 28 ....................................................... Ecology and the Environment 29 .................................................. Minimum Hardware Tightening Torques 30 ......................................... General Specifications 32 ........................................................ Lubricants and Coolants 37 ...................................................

3 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 1 - Engine CONTENTS Section Description Page Specifications 6 .................................................................. Metric Bolt Torque Specifications 15 ............................................... Special Tools 16 ................................................................ Compression Test and Tools 17 ................................................ Description of Operation 18 ...................................................... Troubleshooting 19 .............................................................. Cylinder Head and Valve Train Components 23 .................................. Cylinder Block Assembly 23 ................................................... Separating the Tractor at the Clutch Housing/Engine -- 8 x 12 Transmission 25 ....... Disassembly 25 .......................................................... Separating the Tractor at the Engine/Frame 28 .................................. Removal 28 ............................................................. Installation 29 ............................................................ Attaching the Tractor at the Clutch Housing/Engine -- 8 x 12 Transmission 30 ........ Assembly 30 ............................................................ Overhaul 34 .................................................................... Engine 34 .................................................................. Fuel Injector and Glow Plug 34 ................................................ Removal 34 ............................................................. Oil Pressure Switch 34 ....................................................... Temperature Sending Switch and Alternator 34 .................................. Removal 34 ............................................................. Fan, Water Pump and External Oil Tube 35 ..................................... Removal 35 ............................................................. Air Inlet Manifold 35 .......................................................... Removal 35 ............................................................. Rocker Arm Shaft and Support Bracket 36 ...................................... Removal 36 ............................................................. 10 101 Cylinder Head 36 ............................................................ Removal 36 ............................................................. Valve Tappet 37 ............................................................. Removal 37 ............................................................. Fuel Shutoff Solenoid 37 ...................................................... Removal 37 .............................................................

4 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 1 - Engine (Continued) CONTENTS Section Description Page 10 106 Engine Timing Gear Cover, Timing Gears, and Cam Shaft 37 ...................... Timing Gear Cover Removal 37 ............................................ 10 106 Timing Gears and Cam Shaft 40 .............................................. Removal 40 ............................................................. 10 102 Oil Sump 41 ................................................................ Removal 41 ............................................................. Oil Suction Pipe and Strainer 41 ............................................... Removal 41 ............................................................. 10 110 Balancer Assembly 42 ....................................................... Removal 42 ............................................................. 10 105 Connecting Rods, Bearings, and Pistons, Rings 42 ............................... Removal 42 ............................................................. 10 103 Flywheel 43 ................................................................. Removal 43 ............................................................. 10 103 Backplate and Oil Seal 43 .................................................... Removal 43 ............................................................. Crankshaft -- Main Bearings 43 ................................................ Removal 43 ............................................................. 10 101 Cylinder Head 44 ............................................................ Disassembly 44 .......................................................... Inspection and Repair 44 .................................................. Valve Seats 45 .............................................................. Valves 46 ................................................................... Valve Guides 47 ............................................................. Valve Springs 48 ............................................................ Rocker Arms 48 ............................................................. Push Rods 49 ............................................................... Cylinder Head 49 ............................................................ Assembly 49 ............................................................ Cylinder Block 50 ............................................................ Pistons 50 .................................................................. Disassembly and Inspection 50 ............................................

5 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 1 - Engine (Continued) CONTENTS Section Description Page Piston Rings 53 ............................................................. Connecting Rods 53 ......................................................... Connecting Rod Bearing 55 ................................................... Clearance Check 55 ...................................................... Pistons, Rings, and Connecting Rod 56 ......................................... Assembly 56 ............................................................ 10 103 Crankshaft -- Main Bearing and Thrust Washer 57 ................................ Removal and Inspection 57 ................................................ Crankshaft 58 .............................................................. Bearing (Bushing) 59 ......................................................... Replacement 59 ......................................................... Main Bearing 60 ............................................................. Assembly 60 ............................................................ Port Block 61 ............................................................... Removal 61 ............................................................. Installation 61 ............................................................ 10 106 Timing Gear 62 .............................................................. Camshaft 62 ................................................................ Disassembly 62 .......................................................... Inspection 62 ............................................................ Assembly 63 ............................................................ 10 103 Flywheel 63 ................................................................. 10 102 Timing Gear Housing 64 ...................................................... 10 102 Front Oil Seal and Steering Pump Seal 64 ...................................... Replacement 64 ......................................................... 10 103 Crankshaft and Bearing Holder 65 ............................................. Installation 65 ............................................................ Rear Oil Seal and Backplate 65 ................................................ Installation 65 ............................................................ Flywheel 66 ................................................................. Installation 66 ............................................................ 10 105 Pistons and Connecting Rods 66 .............................................. Installation 66 ............................................................

6 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 1 - Engine (Continued) CONTENTS Section Description Page 10 110 Balancer Assembly 67 ....................................................... Installation 67 ............................................................ Balancer Shims 67 ....................................................... Oil Suction Pipe and Suction Strainer 68 ........................................ Installation 68 ............................................................ Oil Sump 68 ................................................................ Installation 68 ............................................................ 10 106 Camshaft and Camshaft Gear 68 .............................................. Installation 68 ............................................................ 10 106 Idler Gear, Oil Pump, and Injection Timing 69 .................................... Installation 69 ............................................................ Timing Gear Cover 69 ........................................................ Installation 69 ............................................................ Crankshaft Pulley 70 ......................................................... Installation 70 ............................................................ Fuel Injection Pump 70 ....................................................... Installation 70 ............................................................ Hydraulic Oil Pump 71 ....................................................... Installation 71 ............................................................ Power Steering Pump 71 ..................................................... Installation 71 ............................................................ 10 101 Head Gasket Selection 72 .................................................... Selection Chart 72 ........................................................ Cylinder Head 72 ............................................................ Installation 72 ............................................................ 10 106 Valve Clearance 73 .......................................................... Adjustment 73 ........................................................... Valve Cover 74 .............................................................. Installation 74 ............................................................ Water Pump and Cooling Fan 74 .............................................. Installation 74 ............................................................ External Oil Tube 74 ......................................................... Assembly 74 ............................................................

7 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 1 - Engine (Continued) CONTENTS Section Description Page Glow Plug and Connector 75 .................................................. Installation 75 ............................................................ Fuel Injector 75 ............................................................. Installation 75 ............................................................ 10 218 Fuel Piping 75 ............................................................... Installation 75 ............................................................ Alternator and Temperature Sender Switch 76 ................................... Installation 76 ............................................................ Exhaust Manifold 76 ......................................................... Installation 76 ............................................................ 10 304 Description of Operation -- Engine Lubrication System 77 ............................. 10 206 Oil Filter 80 ................................................................. Construction and Function 80 .............................................. Maintenance 80 .......................................................... 10 304 Oil Pump 80 ................................................................ Removal 80 ............................................................. Inspection 80 ............................................................ Installation and Adjustment 81 ............................................. Engine Oil Pressure 82 ....................................................... Check 82 ............................................................... Oil Pressure Relief Valve 83 ................................................... Removal 83 ............................................................. Installation 83 ............................................................ Oil Consumption 83 .......................................................... 10 400 Description of Operation -- Cooling System 84 ...................................... Maintenance 86 ............................................................. Coolant 86 .................................................................. Radiator Cap 86 ............................................................. 10 402 Thermostat 87 .............................................................. 10 402 Water Pump 87 ............................................................. 10 414 Cooling Fan 87 ..............................................................

8 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 1 - Engine (Continued) CONTENTS Section Description Page Overhaul -- Cooling System 88 ................................................... 10 406 Radiator 88 ................................................................. Removal 88 ............................................................. Inspection and Repair 89 .................................................. Installation 89 ............................................................ 10 402 Water Pump 90 ............................................................. Removal 90 ............................................................. Inspection and Repair 92 .................................................. Installation 92 ............................................................ 10 402 Thermostat 93 .............................................................. Removal 93 ............................................................. Inspection and Repair 93 .................................................. Installation 94 ............................................................ SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 2 - Fuel Systems CONTENTS Section Description Page Specifications 3 .................................................................. Standards for Adjusting Injection Pump 3 ........................................ Torque Specifications 4 ........................................................... Special Tools 4 .................................................................. Description of Operation 5 ........................................................ 10 242 Injection Pump 5 ............................................................. Troubleshooting -- General 7 ...................................................... Troubleshooting -- Fuel Injectors 10 ................................................

9 SECTION 10 - ENGINE BOOK 1 - 87655298 Chapter 2 - Fuel Systems (Continued) CONTENTS Section Description Page Troubleshooting -- Governor 11 .................................................... 10 244 Fuel Variation Mechanism 12 .................................................. Delivery Valve Assembly 13 ................................................... 10 244 CTD (Compact Timing Device) 13 .............................................. 10 236 Pumping Elements 15 ........................................................ 10 214 Delivery Valves 15 ........................................................... 10 242 Injection Pump 17 ........................................................... Removal 17 ............................................................. Repair 19 ............................................................... Installation 19 ............................................................ Calibration/Adjustments 20 ....................................................... 10 230 Fuel Pump 20 ............................................................... Installation 20 ............................................................ Spill-Timing Procedure 21 ................................................. Fuel Screw/High Idle 25 ...................................................... Adjustment 25 ........................................................... 10 230 Fuel Pump 26 ............................................................... Auto Bleed 26 ........................................................... Description of Operation 27 ...................................................... 10 230 Governor 27 ................................................................ Disassembly 29 .......................................................... Assembly 30 ............................................................ Adjustments 32 .......................................................... 10 218 Injectors 33 ................................................................. Removal 34 ............................................................. Disassembly 35 .......................................................... Assembly/Adjustment 35 .................................................. Engine Breather Valve 36 ..................................................... Removal 37 ............................................................. Installation 37 ............................................................ Troubleshooting -- Engine Breather Valve 38 ........................................

10 SECTION 18 - CLUTCHES BOOK 1 - 87655298 Chapter 1 - Clutches CONTENTS Section Description Page Specifications 2 .................................................................. Tightening Torques 3 ............................................................. Special Tools 4 .................................................................. Sealants 4 ...................................................................... Sectional Views -- Clutch Assembly 5 ............................................... Sectional Views -- Clutch Plate 6 ................................................... Troubleshooting 7 ................................................................ Description and Operation 8 ....................................................... Operation 8 .................................................................. Overhaul 9 ...................................................................... Clutch Pedal 9 ............................................................... Removal 9 ............................................................... Inspection 10 ............................................................ Installation 11 ............................................................. PTO and Clutch Lever Cross Shaft 12 .......................................... Removal 12 ............................................................. Inspection 14 ............................................................ Installation 14 ............................................................ Transmission/PTO Release Bearing Assembly 16 ................................ Disassembly 16 .......................................................... Assembly 17 ............................................................ Clutch Pedal Setting 18 ....................................................... Adjustment 18 ........................................................... PTO Clutch Lever Adjustment 19 ........................................... Clutch Assembly 20 .......................................................... Removal 20 ............................................................. Installation 21 ............................................................ Disassembly 23 .......................................................... Release Fingers 25 .......................................................... Disassembly 25 .......................................................... Assembly 26 ............................................................ Inspection and Repair 28 .................................................. Installation 29 ............................................................ Release Lever Height Adjustment 32 ...........................................

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New Holland TT45A, TT50A Service Manual

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