New Holland 8670, 8670A, 8970, 8970A Service Manual

87018730 6/02  2002 NEW HOLLAND NORTH AMERICA, INC. Printed In U.S.A. 70/70A SERIES REPAIR MANUAL COMPLETE CONTENTS SECTION 00 - GENERAL INFORMATION 2 ............................. SECTION 10 - ENGINE 2 .............................................. SECTION 21 - TRANSMISSION 7 ....................................... SECTION 23 - DRIVE LINES 12 .......................................... SECTION 25 - FRONT MECHANICAL DRIVE 12 ........................... SECTION 27 - REAR DRIVE AXLE 15 .................................... SECTION 31 - POWER TAKE-OFF 16 .................................... SECTION 33 - BRAKES AND CONTROLS 17 ............................. SECTION 35 - HYDRAULIC SYSTEMS 20 ................................ SECTION 41 - STEERING 29 ............................................ SECTION 44 - TWO-WHEEL DRIVE AXLE AND WHEELS 30 ............... SECTION 50 - CLIMATE CONTROL 32 ................................... SECTION 55 - ELECTRICAL SYSTEMS 33 ............................... SECTION 90 - PLATFORM, CAB, AND BODYWORK 40 .................... The following pages are the collation of the contents pages from each section and chapter of the 70/70A Series Repair manual. 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 70/70A Series Tractors.

2 SECTION 00 - GENERAL INFORMATION BOOK 1 - 87018723 Chapter 1 - General Information CONTENTS Section Description Page 00 000 Forward 2 ...................................................................... Precautionary Statements 3 ....................................................... Safety Precautions 4 ............................................................. Health and Safety Precautions 7 ................................................... Tractor Identification 14 .......................................................... Service Techniques 21 ........................................................... Sealer Specifications 23 ......................................................... Hardware Torque Values 23 ...................................................... Lubrication 26 .................................................................. Recommended Lubricants and Coolants 26 ......................................... SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 1 -- Engine and Lubrication System CONTENTS Section Description Page 10 000 Specifications 3 .................................................................. Torque Values 12 ............................................................... Grease and Sealants 14 ......................................................... Special Tools 15 ................................................................ Description of Operation 16 ...................................................... Cylinder Head Assembly 22 ...................................................... Camshaft Assembly 22 .......................................................... Crankshaft Assembly 22 ......................................................... Connecting Rods 22 ............................................................. Pistons 22 ..................................................................... Manifolds 22 ................................................................... Cylinder Block Assembly 22 ...................................................... Timing Gears 22 ................................................................

3 SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 1 -- Engine and Lubrication System (Continued) CONTENTS Section Description Page Engine Lubrication 23 ........................................................... Troubleshooting 27 .............................................................. Disassembly and Repair 30 ...................................................... Cylinder Head 30 ............................................................... Cylinder Head Reassembly 42 .................................................... Additional Information 45 ......................................................... Crankcase Front Cassette Seal 47 ................................................ Parts Affected 47 ............................................................... Additional Information 47 ......................................................... Removal of Old Style Seal and Installation of the New Cassette Seal 47 ................ Front Cassette Seal Removal 53 .................................................. Engine Front Cover and Timing Gear 58 ........................................... Oil Pan 60 ..................................................................... Connecting Rods, Bearings, Pistons and Rings 61 ................................... Cylinder Block Overhaul 64 ....................................................... Piston Assembly Installation 69 ................................................... Main Bearings, Flywheel and Crankshaft 70 ........................................ Rear Cover Plate 72 ............................................................. Oil Pump 75 .................................................................... Oil Filter Support Assembly 77 .................................................... Crankshaft 78 .................................................................. Camshaft 82 ................................................................... Engine Timing Gears 84 ......................................................... Engine Compression Test 85 ..................................................... Test Procedure 85 .............................................................. Test Reading 85 ................................................................ Test Conclusion 85 ..............................................................

4 SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 2 -- Cooling System CONTENTS Section Description Page 10 000 Specifications 2 .................................................................. Description of Operation 4 ........................................................ Cooling System 4 ................................................................ Troubleshooting 6 ................................................................ Disassembly and Repair 7 ........................................................ Radiator 7 ...................................................................... Thermostat 9 .................................................................... Temperature Warning Sender 10 .................................................. Fan Blade 10 ................................................................... Viscous Clutch Assembly 10 ...................................................... Fan Belt Tensioner 11 ............................................................ Idler Pulley 11 ................................................................... Water Pump 12 ................................................................. SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 3 -- Induction System CONTENTS Section Description Page 10 000 Specifications 2 .................................................................. Description of Operation 4 ........................................................ Air Cleaner 4 .................................................................... Turbocharger 6 .................................................................. Intercooler 9 .................................................................... Troubleshooting 10 .............................................................. Intercooler Leak Test 12 ......................................................... Disassembly and Repair 13 ...................................................... Air Cleaner 13 .................................................................. Turbocharger 15 ................................................................ Intercooler 21 ..................................................................

5 SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 4 -- Fuel System CONTENTS Section Description Page 10 000 Specifications 3 .................................................................. Fuel System Torque Chart 4 ....................................................... Special Tools 4 .................................................................. Description of Operation 5 ........................................................ Testing and Diagnosis 19 ........................................................ Low Pressure Fuel System 20 .................................................... Fuel Tank Valves 20 ............................................................. Filter Inlet and Outlet Pressure Tests 20 ............................................ High Pressure Fuel System 25 ................................................... Injection Timing Check 25 ........................................................ Fuel Injector Nozzle Check 28 .................................................... Injector Assembly Bench Testing 28 ............................................... Preliminary Setup Procedure 29 ................................................... Perform Opening Pressure Test 29 ................................................ Perform Nozzle Seat Leakage Test 30 ............................................. Perform Chatter and Spray Pattern Test 31 ......................................... Surging 31 ..................................................................... Fuel Shutoff Diagnosis 32 ........................................................ Shutoff Solenoid Specifications 32 ................................................. Preliminary Checks 32 ........................................................... Checking Electrical Feed 32 ...................................................... Adjustments 34 ................................................................. Bleeding the Fuel System 34 ..................................................... Adjustment of Foot and Hand Throttle Cables 35 .................................... Adjustment of High Idle Speed 35 ................................................. Adjustment of Low Idle and Antisurge 36 ........................................... Removal and Installation 37 ...................................................... Fuel Lift Pump 37 ............................................................... Fuel Shutoff Solenoid 38 ......................................................... Fuel Injection Pump 39 .......................................................... Fuel Injection Lines 47 ........................................................... Low-pressure Fuel Injection Lines 47 .............................................. High-pressure Fuel Lines 48 ......................................................

6 SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 4 -- Fuel System (Continued) CONTENTS Injector Leak-off Line 50 ......................................................... Fuel Filter 51 ................................................................... Fuel Filter Manifold 52 ........................................................... Injection Nozzles 53 ............................................................. SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 5 -- Engine Removal CONTENTS Section Description Page 10 000 Specifications 2 .................................................................. Description of Operation 3 ........................................................ Disassembly and Repair 4 ........................................................ Engine Removal 4 ............................................................... Engine Installation 8 .............................................................. SECTION10 -- ENGINE BOOK 1 - 87018723 Chapter 6 -- Fuel Tank Removal CONTENTS Section Description Page 10 000 Specifications 2 .................................................................. Description of Operation 3 ........................................................ Disassembly and Repair 4 ........................................................ Lower Tank Removal 4 ........................................................... Lower Tank Installation 5 .......................................................... Top Tank Removal 6 ............................................................. Top Tank Installation 6 ............................................................

7 SECTION 21 -- TRANSMISSION BOOK 1 - 87018723 Chapter 1 -- Operation and Overview CONTENTS Section Description Page 21 000 Specifications 2 .................................................................. Powershift Transmission 2 ........................................................ Gear Ratios 2 ................................................................... Ground Speed 3 ................................................................. Electrical System 5 ............................................................... Description of Operation 6 ........................................................ Transmission Housing 7 .......................................................... Powershift Transmission Controls 8 ................................................ Digital Display 8 ................................................................. Inching Pedal 9 .................................................................. Starting the Engine and Moving Forward 10 ........................................ Starting the Engine and Moving in Reverse 11 ....................................... Shuttle Operations 12 ........................................................... Speed Matching 13 ............................................................. Auto Shift 14 ................................................................... Creeper Gears (optional) 15 ...................................................... Programmable Upshift - Downshift 15 .............................................. Transmission Components 17 .................................................... Clutches 17 .................................................................... Speed Clutches 17 .............................................................. Directional Clutches 21 .......................................................... Clutch Engagement 22 .......................................................... Troubleshooting and Diagnosis 33 .................................................

8 SECTION 21 -- TRANSMISSION BOOK 1 - 87018723 Chapter 2 -- Separating the Engine and Front Axle from the Transmission CONTENTS Section Description Page 21 000 Specifications 2 .......................................................... Special Tools 2 .................................................................. Description of Operation 3 ........................................................ Disassembly and Repair 4 ........................................................ Engine and Side Rail Separation from the Transmission 4 ............................. Four-wheel Drive Shaft Removal (if equipped) 8 ...................................... Engine and Side Rail Reassembly 10 .............................................. SECTION 21 -- TRANSMISSION BOOK 1 - 87018723 Chapter 3 -- Separating the Rear Axle from the Transmission CONTENTS Section Description Page 21 000 Specifications 2 .................................................................. Special Tools 2 .................................................................. Description of Operation 3 ........................................................ Disassembly and Repair 4 ........................................................ Rear Axle to Transmission Separation 4 ............................................. Reassembly 8 ................................................................... MInimum Hardware Tightening Torques 9 ...........................................

9 SECTION 21 -- TRANSMISSION BOOK 1 - 87018723 Chapter 4 -- Mechanical System CONTENTS Section Description Page 21 000 Specifications 2 .................................................................. Torque Specifications 3 ........................................................... Special Tools 4 .................................................................. Description of Operation 5 ........................................................ Troubleshooting and Diagnosis 6 ................................................... Disassembly and Repair 7 ........................................................ Removal and Disassembly 7 ...................................................... Rear Housing and Directional Clutches - Removal 8 .................................. Front Housing and Speed Clutches - Removal 12 ................................... Main Input Gear Assembly - Removal 14 ........................................... Speed Clutches - Disassembly 16 ................................................. Speed Clutches - Inspection 21 ................................................... Directional Clutches - Disassembly 23 ............................................. Directional Clutches - Inspection and Overhaul 26 ................................... Speed/Directional Clutch - Reassembly 27 ......................................... Main Input Gear and Oil Seal - Disassembly Inspection, Overhaul and Reassemble 29 .......................................................... Two Gear Clusters in Front and Rear Housing - Disassembly, Inspection and Reassembly 30 ................................................ Front and Rear Housings and Center Section - Inspection and Overhaul 30 ............. Torque Limiting Clutch and Sprung Damper Hub Drive Assembly - Removal, Inspection and Replacement 32 ...................................... Reassembly 33 ................................................................. Speed Clutches and Front Housing 33 ............................................. Directional Clutches and Rear Housing 34 .......................................... Transmission Shimming 36 ....................................................... Front Housing Shimming 36 ...................................................... Rear Housing Shimming 37 ...................................................... Shimming the Output Shaft 38 .................................................... Creeper Gear 39 ................................................................ Creeper Gear Repair 41 ......................................................... Installation 44 ..................................................................

10 SECTION 21 -- TRANSMISSION BOOK 1 - 87018723 Chapter 5 -- Hydraulic System CONTENTS Section Description Page 21 000 Specifications 3 .................................................................. Low-pressure Hydraulic System 3 .................................................. Special Tools 4 .................................................................. Description of Operation 5 ........................................................ Regulator Valve Operation 7 ....................................................... Clutch Valve Operation 7 .......................................................... Modulator Valve Operation 8 ...................................................... Electro-hydraulic Pilot Line 9 ...................................................... Troubleshooting and Diagnosis 10 ................................................. 70/70A Series Transmission Test Sheet 11 .......................................... Electrical/Electronic System Checks 11 ............................................. Hydraulic System Checks 13 ..................................................... Clutch Apply Pressure Chart 14 ................................................... Pressure Testing and Adjustments 15 ............................................. Clutch Apply Circuit Pressure Testing 17 ........................................... Transmission Pressure Checklist 19 ............................................... Transmission Programming 21 .................................................... Programming the Programmable Upshift, Downshift 21 ............................... Programming Reverse Gear Ratios 23 ............................................. Transmission Calibration 25 ...................................................... Check Powershift Transmission Clutch Calibration 25 ................................ Calibration Review 26 ........................................................... Calibrate F1 Directional Clutch 26 ................................................. Calibrate F2 Directional Clutch 27 ................................................. Calibrate Reverse Directional Clutch 27 ............................................ Exit Calibration Mode 28 .........................................................

New Holland 8670, 8670A, 8970, 8970A Service Manual

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