Complete Repair Service Technical Manual for John Deere Tractors 8120, 8220, 8320, 8420, 8520 (Worldwide Edition), with workshop information to maintain, repair, and rebuild like professional mechanics.

John Deere 2WD or MFWD Tractors 8120, 8220, 8320, 8420 & 8520 (Worldwide Edition) workshop technical manual (repair) includes:
* Numbered table of contents easy to use so that you can find the information you need fast.
* Detailed sub-steps expand on repair procedure information
* Numbered instructions guide you through every repair procedure step by step.
* Notes, cautions and warnings throughout each chapter pinpoint critical information.
* Bold figure number help you quickly match illustrations with instructions.
* Detailed illustrations, drawings and photos guide you through every procedure.
* Enlarged inset helps you identify and examine parts in detail.

tm1970 - John Deere 8120, 82208320, 8420and 8520Tractors Repair Technical Manual.pdf
tm2786 - John Deere Reparatur Traktoren 8120, 8220, 8320, 8420 und 8520.pdf
tm2788 - John Deere Opravy traktorů 8120, 8220, 8320, 8420 a 8520.pdf
tm2791 - John Deere Riparazione dei trattori 8120, 8220, 8320, 8420, e 8520.pdf
tm2792 - John Deere Remise en état des modèles 8120, 8220, 8320, 8420, et 8520.pdf
tm2929 - John Deere Ремонт тракторов 8120, 8220, 8320, 8420 и 8520.pdf
tm2930 - John Deere Reparação de Tratores 8120, 8220, 8320, 8420 e 8520.pdf

Total Pages: 1,662 pages
File Format: PDF(bookmarked, ToC, Searchable, Printable)
Category: Repair
Language: English German Czech Italian French Russian Portuguese
Published on 2018/06/12

MAIN SECTIONS
Foreword
   Dealer Predelivery Information Form
   General Information
      Safety
      General Information
   Engine
      Component Removal and Installation
      Engine Repair
   Fuel and Cooling Systems
      Diesel Fuel System
      Air Intake System
      Engine Cooling System
      Coolers and Air Conditioning Condenser
   Electrical
      Connectors
      Wiring Harness Routings
      Charging Circuit
      Starting Circuit
      Relays, Fuses, Solenoids, and Switches
      Monitoring Systems and Sensors
      Armrest Control
      Implement and Accessory Connectors
      Convenience and Accessory Components
   Power Shift Transmission
      Component Removal and Installation
      Miscellaneous Repair
      Transmission
   Drive Systems
      Component Removal and Installation
      Rear Differential and Input Quill
      Final Drives
      Rear PTO
      Hydraulic Pump Drive
      MFWD Clutch
      Drivelines
   MFWD Axles
      Component Removal and Installation
      Final Drives
      Axle Housing
      Differential
      Input Gear Train
      Oscillation
      Secondary Brake
   INDEPENDENT LINK SUSPENSION™ Axle
      Component Removal and Installation
      Controls
      Final Drives
      Drive Shafts
      Brakes
      Differential
      Steering
      Suspension
   Steering and Brakes
      Steering Column
      Steering Control Assembly
      Steering Cylinders
      Brake Valve
      Brake Components
      Trailer Brakes
   Hydraulics
      Component Removal and Installation
      Hydraulic System Repair and Cleanup
      Tandem Hydraulic Pump (Steering-Brakes-Charge)
      Secondary Hydraulic Pump (Hitch-SCV)
      Filter Bypass
      Hitch Valve, Selective Control Valves, and Couplers
      Hitch
   Miscellaneous
      Hood
      Front Axle (Two-Wheel Drive)
      Wagon and Pick-Up Hitch
   Operator Station
      Component Removal and Installation
      Heating, Ventilating, and Air Conditioning (HVAC)
      Air Conditioning System
      Air Suspension Seat
      ACTIVE SEAT™
      Armrest
      Cab Door and Windshield
   Dealer Fabricated Tools
      Fabricated Tools

TABLE OF CONTENTS
Section 10: General Information................27
  Group 05: Safety................27
    Recognize Safety Information................29
    Handle Fluids Safely—Avoid Fires................30
    Prevent Battery Explosions................31
    Prepare for Emergencies................32
    Prevent Acid Burns................33
    Handle Chemical Products Safely................35
    Avoid High-Pressure Fluids................36
    Park Machine Safely................37
    Support Machine Properly................38
    Wear Protective Clothing................39
    Work in Clean Area................40
    Service Machines Safely................41
    Work In Ventilated Area................42
    Illuminate Work Area Safely................43
    Replace Safety Signs................44
    Use Proper Lifting Equipment................45
    Avoid Harmful Asbestos Dust................46
    Avoid Heating Near Pressurized Fluid Lines................47
    Remove Paint Before Welding or Heating................48
    Use Proper Tools................49
    Construct Dealer-Made Tools Safely................50
    Decommissioning — Proper Recycling and Disposal of Fluids and Components................51
    Live With Safety................52
  Group 10: General Information................27
    General Specifications................1614
    Overall Dimensions................61
    Sealants and Adhesives Cross-Reference Chart................62
    Metric Bolt and Screw Torque Values................64
    Unified Inch Bolt and Screw Torque Values................66
    Glossary of Terms................69
Section 20: Engine................73
  Group 00: Component Removal and Installation................73
    Essential or Recommended Tools................1558
    Specifications................1614
    Remove Engine................77
    Install Engine................84
    Remove Front Frame—MFWD and Two-Wheel Drive................73
    Install Front Frame................89
  Group 05: Engine Repair................73
    Engine Repair—Use CTM86 or CTM255................73
Section 30: Fuel and Cooling Systems................92
  Group 05: Diesel Fuel System................92
    Specifications................1614
    Remove and Install Fuel Tank................95
    Replace Fuel Filter, Fuel Pump, and Bleed Fuel System................101
  Group 10: Air Intake System................92
    Specifications................1614
    Other Material................1559
    Service Air Intake System................105
    Repair Aspirator................106
  Group 15: Engine Cooling System................92
    Essential or Recommended Tools................1558
    Specifications................1614
    Test Radiator and Coolant Tank Cap................114
    Remove and Install Radiator/Aftercooler................116
    Auxiliary Drive Belt Routing................120
    Inspect Fan Belt Tensioner................121
    Remove and Install Viscous Fan Drive................122
    Remove and Install Vistronic Fan Drive (8520)................124
  Group 20: Coolers and Air Conditioning Condenser................92
    Essential or Recommended Tools................1558
    Specifications................1614
    Other Material................1559
    Remove Air Conditioning Condenser/Fuel Cooler................130
    Install Air Conditioning Condenser/Fuel Cooler................131
    Replace Hydraulic Oil Cooler................132
    Leak Test Hydraulic Oil Cooler................133
Section 40: Electrical................134
  Group 05: Connectors................134
    Essential or Recommended Tools................1558
    Other Material................1559
    Use Electrical Insulating Compound................144
    Using High-Pressure Washers................145
    Repair AMP Connector................146
    Remove Connector Body from Blade Terminals................148
    Repair CINCH Connectors................149
    Repair 32 and 48 Way CINCH Connectors................152
    Repair CPC CPC is a trademark of AMP Incorporated Blade Type Connectors................134
    Repair CPC CPC is a trademark of AMP Incorporated , Large MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated and METRIMATE METRIMATE is a trademark of AMP Incorporated Pin Type Connectors................134
    Repair DEUTSCH DEUTSCH is a trademark of Deutsch Company Connectors................134
    Repair DEUTSCH™ Implement Connectors................162
    Repair Small MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated Socket Connector................134
    Repair Small MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated Pin Connector................134
    Repair (Pull Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors................134
    Repair (Push Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors................134
    Repair SUMITOMO™ Connectors................172
    Repair Weather Pack Weather Pack is a trademark of Packard Electric Connector................134
    Repair YAZAKI™ Connectors................178
  Group 10: Wiring Harness Routings................134
    Wire Number and Color Codes................182
    Ground Point Locations................183
Section 50: Power Shift Transmission................354
  Group 00: Component Removal and Installation................354
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Remove Transmission................362
    Install Transmission................381
    Install Scavenge Pump................385
    Remove Ground-Driven Pump................387
    Install Ground-Driven Pump................390
  Group 05: Miscellaneous Repair................354
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Disengage Park Brake................398
    Using a Hydraulic Hand Pump to Release Park Brake................400
    Repair Clutch Pedal................402
    Replace Clutch Cable................406
    Replace Transmission Input Shaft Front Seal................410
    Replace Auxiliary Drive Pulley................414
    Replace Transmission Input Shaft Rear Seal Transmission in Tractor................354
  Group 10: Transmission................354
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    General Repair Procedures—Power Shift Transmission................354
    Clutch Cover Plate Orientation................435
    Install Transmission Onto Repair Stand................436
    Cross-Sectional View—Transmission Assembly (MFWD without ILS™)................354
    Disassemble Transmission................440
    Exploded View—Manifold Valves................354
    Remove and Install Manifold Valves................454
    Cleaning Procedures—Manifold, Rear Cover, and Valves................355
    Disassemble and Assemble Manifold................461
    Inspect and Clean Electro-Hydraulic Valve................459
    Disassemble and Assemble Manifold................461
    Disassemble and Assemble Transmission Rear Cover................470
    Cross-Sectional View—Transmission Input Shaft................355
    Disassemble Input Shaft................480
    Assemble Input Shaft Gear/Clutch Assemblies................481
    Assemble Input Shaft................484
    Cross-Sectional View—Transmission Countershaft................355
    Disassemble Countershaft................487
    Assemble Countershaft Gear/Clutch Assemblies................488
    Assemble Countershaft................491
    Cross-Sectional View—Transmission Output Shaft Assembly................355
    Disassemble Output Shaft Assembly................495
    Disassemble, Inspect, and Assemble Planetary Carrier................499
    Inspect Clutch Disks................502
    Assemble Output Shaft Assembly................503
    Assemble Transmission................512
    Remove Transmission From Repair Stand................528
Section 56: Drive Systems................529
  Group 00: Component Removal and Installation................529
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    General Repair Procedures................920
    Remove MFWD Clutch................547
    Install MFWD Clutch................560
    Remove Pump Drive Housing................563
    Install Pump Drive Housing................569
    Remove Final Drive................571
    Install Final Drive................575
  Group 05: Rear Differential and Input Quill................529
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    General Repair Procedures—Rear Differential and Input Quill................529
    Remove Differential................846
    Cross-Sectional View—Rear Differential................529
    Disassemble, Inspect, and Assemble Differential................855
    Remove Input Quill Assembly................600
    Cross-Sectional View—Input Quill................529
    Disassemble, Inspect, and Assemble Input Quill................604
    Determine Differential Drive Shaft Cone Point Shim Pack................606
    Assemble and Install Differential Drive Shaft................607
    Install Input Quill Assembly................613
    Install Differential................615
    Side Quill Adjustment Information................618
    Measure End Play and Adjust Differential Preload................619
    Adjust Differential Backlash................621
  Group 10: Final Drives................529
    Essential or Recommended Tools................1558
    Specifications................1614
    General Repair Procedures—Final Drive................530
    Cross-Sectional View—Final Drive................530
    Disassemble Final Drive................634
    Disassemble, Inspect, and Assemble Planet Pinion Carrier................637
    Remove Axle Housing................639
    Disassemble and Assemble Axle Housing................640
    Disassemble, Inspect, and Assemble Axle Shaft................641
    Install Axle Housing................643
    Adjust Axle Bearings................644
  Group 15: Rear PTO................530
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    General Repair Procedures—PTO Gear Train................530
    Remove and Install PTO Output Housing................659
    Cross-Sectional View—PTO Clutch Assembly................530
    Remove PTO Clutch................663
    Disassemble and Assemble PTO Clutch................667
    Install PTO Clutch................671
    Remove, Inspect, and Install PTO Clutch Valve................674
    Cross-Sectional View—Standard PTO Output Assembly................530
    Disassemble and Assemble Standard PTO Output Housing................677
    Cross-Sectional View—Optional PTO Output Assembly................530
    Disassemble Optional PTO Output Housing Assembly................683
    Assemble Optional PTO Output Housing Assembly................689
    Remove 540/1000 PTO Adapter Assembly................696
    Disassemble and Assemble 540/1000 PTO Adapter Assembly................697
    Install 540/1000 PTO Adapter Assembly................702
  Group 20: Hydraulic Pump Drive................530
    Essential or Recommended Tools................1558
    Specifications................1614
    General Repair Procedures—Hydraulic Pump Drive................530
    Repair Hydraulic Pump Drive................709
    Cross-Sectional View—Pump Drive Gear Train................531
    Disassemble and Assemble Hydraulic Pump Hypoid Pinion Drive Shaft................714
    Disassemble Hypoid Input Gear Quill Assembly................715
    Assemble Hypoid Input Gear Quill................717
    Set Cone Point—Hypoid Pinion Drive Shaft................531
    Set Cone Point—Hypoid Pinion Drive Gear................531
    Verify Gear Set Backlash................725
    Adjust Hypoid Pinion Drive Shaft End Play................727
  Group 25: MFWD Clutch................531
    Essential or Recommended Tools................1558
    Specifications................1614
    General Repair Procedures—MFWD Clutch Assembly................531
    Cross-Sectional View—MFWD Clutch Assembly (Without INDEPENDENT LINK SUSPENSION™)................531
    Cross-Sectional View—MFWD Clutch Assembly (With INDEPENDENT LINK SUSPENSION™)................531
    Disassemble Clutch................737
    Assemble Clutch................741
  Group 30: Drivelines................531
    Specifications................1614
    Replace MFWD Drive Shaft................746
    Cross-Sectional View—Mid-Frame Drive Shafts................531
    Repair Mid-Frame Auxiliary Drive Shaft................748
    Repair Mid-Frame Output Drive Shaft................750
Section 57: MFWD Axles................751
  Group 00: Component Removal and Installation................751
    Essential or Recommended Tools................1558
    Specifications................1614
    Remove MFWD Axle................756
    Install MFWD Axle................759
    Remove and Install Final Drive Assembly................760
  Group 05: Final Drives................751
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    General Repair Procedures—MFWD Axle................751
    CROSS-SECTIONAL VIEW—PLANETARY CARRIER AND WHEEL HUB................751
    Remove and Disassemble Planetary Carrier and Wheel Hub................970
    Assemble and Install Planetary Carrier and Wheel Hub................977
    Cross-Sectional View—Knuckle Spindle Assembly................751
    Disassemble, Inspect, and Assemble Knuckle Spindle Assembly................791
    Replace Kingpin Bearings and Seals................807
    Determine Kingpin Shim Pack................811
  Group 10: Axle Housing................751
    Essential or Recommended Tools................1558
    Specifications................1614
    Install and Remove MFWD Axle To Rollover Stand................818
    Remove Right-Hand Axle Housing................820
    Disassemble Left-Hand Axle Housing and Determine Bearing Cup Shim Pack................821
    Measure Backlash................825
    Adjust Backlash................828
    Backlash Shim Pack Example and Worksheet................830
    Install Left-Hand Axle Housing Bearing Cup and Shim Pack................831
    Disassemble Right-Hand Axle Housing and Determine Shim Pack................836
    Determine Shim Pack................836
    Preload Shim Pack Example and Worksheet................839
    Install Right-Hand Axle Housing................841
  Group 15: Differential................752
    Essential or Recommended Tools................1558
    Specifications................1614
    Remove Differential................846
    Cross-Sectional View—Differential Housing (North American)................752
    Cross-Sectional View—Differential Housing (European)................752
    Repair Differential................851
    Assemble Differential................855
  Group 20: Input Gear Train................752
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Cross-Sectional View—Input Gear Train................752
    Disassemble Input Gear Train................869
    Determine Pinion Shaft Cone Point Shim Pack................875
    Assemble Input Gear Train................876
    Adjust Pinion Shaft................880
  Group 25: Oscillation................752
    Cross-Sectional View—Oscillating Supports................752
    Repair Front Support................885
    Repair Rear Support................889
  Group 30: Secondary Brake................752
    Essential or Recommended Tools................1558
    Specifications................1614
    Cross-Sectional View—Secondary Brake (European Tractors)................752
    Disassemble, Inspect, and Assemble Secondary Brake................898
    Test Secondary Brake................903
    Bleed Secondary Hydraulic Brake................905
    Check Secondary Brake Operation................911
Section 58: INDEPENDENT LINK SUSPENSION™ Axle................912
  Group 00: Component Removal and Installation................912
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    General Repair Procedures................920
    Remove Differential Case................921
    Install Differential Case................924
  Group 05: Controls................912
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Relieve Pressure of Independent Link Suspension System ILS ILS is a trademark of Deere & Company................912
    Remove Independent Link Suspension ILS ILS is a trademark of Deere & Company Valve Housing................912
    Install Valve Housing................934
    Independent Link Suspension Hydraulic Control Valve Block................936
    Remove and Install Accumulators................946
    Check and Charge Accumulators................948
    Checking Gas side Oil Charge of 1L Accumulators................959
  Group 10: Final Drives................912
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Cross-Sectional View—Planetary Carrier and Wheel Hub................912
    Remove and Disassemble Planetary Carrier and Wheel Hub................970
    Assemble and Install Planetary Carrier and Wheel Hub................977
  Group 15: Drive Shafts................912
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Cross-Sectional View—Final Drive Assembly................912
    Disassemble, Inspect, and Assemble Knuckle Housing Assembly................993
    Remove Drive Shaft................995
    Inspect, Disassemble, and Assemble Drive Shaft................998
    Cross-Sectional View—Differential Output (With Brakes)................913
    Cross-Sectional View—Differential Output................913
    Repair Output Yoke/Shaft and Outer Housing Cover................1007
  Group 20: Brakes................913
    Essential or Recommended Tools................1558
    Specifications................1614
    Cross-Sectional View—Differential with Brakes................913
    Introduction................1023
    Repair Brakes................1024
  Group 25: Differential................913
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Cross-Sectional View— Independent Link Suspension MFWD Input Gears................1041
    Remove Input Gears................1043
    Remove Independent Link Suspension Differential Housing Assembly................1056
    Cross-Sectional View—Independent Link Suspension Differential with Hydraulic Differential Lock................913
    Disassemble, Inspect, and Assemble Differential Housing Assembly................1064
    Adjust Differential Housing Bearing Preload and Differential Backlash................1071
    Install Differential Housing Assembly................1076
  Group 30: Steering................913
    Essential or Recommended Tools................1558
    Specifications................1614
    Steering Tie Rod................1082
    Exploded View—Steering Tie Rod................1083
    Remove and Disassemble Outer Tie Rod End Assembly................1084
    Assemble and Install Outer Tie Rod End Assembly................1087
    Cross-Sectional View—Inner Tie Rod Assembly................1089
    Remove, Disassemble, Assemble, and Install Inner Tie Rod End Assembly................1090
    Cross-Sectional View—Steering Cylinder................914
    Remove Steering Cylinder Assembly................1096
    Replace Sealing Rings................1100
    Install Steering Cylinder Assembly................1101
    Cross-Sectional View—Steering Rod................914
    Remove Steering Rod................1103
    Replace Steering Rod and Rod Guide Seals................1106
    Install Steering Rod................1111
  Group 35: Suspension................914
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Remove and Install Suspension Cylinder................1124
    Replace Self-Aligning Bushing................1127
    Replace Cylinder Assembly Pivot Pins................1129
    Cross-Sectional View—Suspension Cylinder................914
    Disassemble and Assemble Suspension Cylinder................1135
    Cross-Sectional View—Suspension Cylinder Seals................914
    Replace Suspension Cylinder Seals................1141
    Cross-Sectional View—Upper Control Arm Pivot................914
    Remove and Disassemble Upper Control Arm Pivot................1147
    Assemble and Install Upper Control Arm Pivot................1153
    Cross-Sectional View—Upper Control Arm Pivot Replacement or ( Ser No 026160 — )................914
    Install New Upper Control Arm Replacement Pivot Shaft or ( Ser No 026160 — )................1162
    Drill Dowel Pin Holes for Pivot Replacement or ( Ser No 026160 — )................1165
    Install Upper Control Arm Pivot Bearings and Caps for Pivot Replacement or ( Ser No 026160 — )................1167
    Cross-Sectional View—Upper Control Arm Ball Joint................914
    Replace Upper Control Arm Ball Joint................1172
    Cross-Sectional View—Lower Control Arm Front Pivot................914
    Repair Lower Control Arm Front Pivot................1180
    Cross-Sectional View—Lower Control Arm Rear Pivot................914
    Repair Lower Control Arm Rear Pivot................1191
    Cross-Sectional View—Lower Control Arm Ball Joint................915
    Replace Lower Control Arm Ball Joint................1200
Section 60: Steering and Brakes................1206
  Group 05: Steering Column................1206
    Specifications................1614
    Repair Steering Column (Standard and AutoTrac)................1209
  Group 10: Steering Control Assembly................1206
    Specifications................1614
    Remove and Install Steering Control Assembly (Standard and AutoTrac)................1219
    Remove and Install Flowmeter Assembly (AutoTrac)................1225
  Group 15: Steering Cylinders................1206
    Other Material................1559
    Service Parts Kits................1488
    Specifications................1614
    Remove and Install Steering Cylinder................1233
    Repair Steering Cylinder—Two-Wheel Drive................1237
    Repair Steering Cylinder—MFWD................1239
  Group 20: Brake Valve................1206
    Service Parts Kits................1488
    Specifications................1614
    General Repair Procedures—Brake Valve................1206
    Remove and Install Brake Valve................1246
    Disassemble, Inspect, and Assemble Brake Valve................1248
    Bleed Brakes................1262
    Check Manual Brakes................1263
  Group 25: Brake Components................1206
    Specifications................1614
    Remove, Inspect, and Install Brake Pistons, Plates, and Disks................1266
  Group 30: Trailer Brakes................1206
    Repair Air Trailer Brakes................1270
Section 70: Hydraulics................1272
  Group 00: Component Removal and Installation................1272
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Remove Tandem Pump................1278
    Prelubricate and Install Tandem Pump................1279
    Remove and Install Secondary Pump................1281
    Remove and Install Hitch-SCV Valve Stack................1283
    Remove and Install Hitch Frame................1285
  Group 05: Hydraulic System Repair and Cleanup................1272
    Essential or Recommended Tools................1558
    Specifications................1614
    General Repair Procedures—Hydraulic Systems................1272
    Install Hydraulic Fittings................1295
    Drain Hydraulic System................1297
    Fill Hydraulic System................1299
    Prelubricate Pump Drive................1300
    Conditions Requiring Hydraulic System Cleanup................1301
    Hydraulic Cleanup Procedure................1302
    Flush the Clean-Oil Reservoir................1306
    Clean Priority Valve................1308
    Clean Differential Housing................1309
    Clean Transmission Housing................1310
    Clean Pump Drive Housing................1311
    Flush Transmission Manifold................1312
  Group 10: Tandem Hydraulic Pump (Steering-Brakes-Charge)................1272
    Other Material................1559
    Replace Shaft Seal................1319
  Group 15: Secondary Hydraulic Pump (Hitch-SCV)................1272
    Essential or Recommended Tools................1558
    Specifications................1614
    Pump Identification................1323
    Replace Shaft Seal—45 cm3 Pump................1273
    Service Hydraulic Pump Control—45 cm3 Pump................1273
    Repair Hydraulic Pump—45 cm3 Pump................1273
    Exploded View—57 cm3 Secondary Hydraulic Pump................1273
    Service Hydraulic Pump Control—57 cm3 Pump................1273
    Repair 57 cm3 Pump................1273
  Group 20: Filter Bypass................1273
    Service Parts Kits................1488
    Specifications................1614
    Remove, Inspect, and Install Hydraulic Filter Bypass................1347
  Group 25: Hitch Valve, Selective Control Valves, and Couplers................1273
    Essential or Recommended Tools................1558
    Specifications................1614
    Disassemble and Assemble Hitch-SCV Valve Stack................1353
    Disassemble, Inspect, and Assemble Hitch Valve................1356
    Test High Pressure Relief Valve................1363
    Disassemble, Inspect, and Assemble Selective Control Valve................1365
    Repair SCV Couplers................1371
  Group 30: Hitch................1273
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Remove and Install Lift Cylinder................1381
    Cross-Sectional and Exploded View—Hitch Lift Cylinder................1273
    Disassemble, Inspect, and Assemble Lift Cylinder................1386
    Replace Rockshaft Bushings................1392
    Repair Draft Sensing................1394
Section 80: Miscellaneous................1402
  Group 05: Hood................1402
    Position Hood Forward................1404
    Remove and Install Hood................1405
  Group 10: Front Axle (Two-Wheel Drive)................1402
    Essential or Recommended Tools................1558
    Specifications................1614
    Other Material................1559
    Remove Front Axle................1413
    Install Front Axle................1415
    Check Pivot Support Bushing Wear................1416
    Replace Pivot Support Bushings................1417
    Replace Front Axle Pivot Pins................1419
    Replace Knee Bushings................1421
    Replace Wheel Bearings................1425
    Replace Axle Pivot Pins................1427
  Group 15: Wagon and Pick-Up Hitch................1402
    Specifications................1614
    Repair Wagon Hitch................1432
    Adjust Wagon Hitch Release................1433
    Repair Pick-Up Hitch................1434
Section 90: Operator Station................1435
  Group 00: Component Removal and Installation................1435
    Essential or Recommended Tools................1558
    Specifications................1614
    Remove Cab................1441
    Install Cab................1448
    Repair Cab................1450
  Group 05: Heating, Ventilating, and Air Conditioning (HVAC)................1435
    Heater Line Routing................1452
    Remove HVAC Module................1453
    Install HVAC Module................1459
    Remove and Install Heater Core................1460
    Remove and Install Heater Control Valve (Without CLIMATRAK CLIMATRAK is a trademark of Deere & Company )................1435
    Remove, Test, and Install Heater Control Valve (With CLIMATRAK CLIMATRAK is a trademark of Deere & Company XXXXX-010001)................1435
    Remove and Install Heater Control Valve (With CLIMATRAK CLIMATRAK is a trademark of Deere & Company 010001-XXXXX)................1435
    Leak Test Heater Control Valve................1469
    Install Heater Control Valve................1470
    Remove and Install Control Cable................1471
    Adjust Heating/Cooling Controls................1473
  Group 10: Air Conditioning System................1435
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Service Parts Kits................1488
    Hose and Tubing O-Ring Connection Torques................1489
    Discharge Air Conditioning System................1490
    Flushing, Purging, and Evacuating Information................1492
    Flush Air Conditioning System................1494
    Purge Air Conditioning System................1498
    Evacuate Air Conditioning System................1499
    Charge Air Conditioning System................1501
    Refrigerant Oil Information................1503
    Check Compressor Oil Charge................1504
    Determine Correct Refrigerant Oil Charge................1505
    Add Refrigerant Oil to System................1507
    Add Refrigerant Oil to Pressurized System................1508
    Remove and Install Compressor................1510
    Test Volumetric Efficiency................1512
    Test Shaft Seal Leakage................1515
    Disassemble and Assemble Compressor Clutch................1517
    Check Clutch Hub Clearance................1519
    Inspect Compressor Manifold................1520
    Disassemble, Inspect, and Assemble Compressor................1521
    Remove and Install Compressor Relief Valve................1524
    Replace Receiver-Dryer................1525
    Remove and Install Expansion Valve................1526
    Remove Air Conditioning Condenser................1528
    Leak Test Condenser................1529
    Leak Test Evaporator................1530
    Remove and Install Evaporator................1533
  Group 15: Air Suspension Seat................1436
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Remove and Install Seat................1539
    Repair Air System................1590
    Repair Suspension................1595
    Repair Seat Back................1603
    Repair Control Knobs................1555
  Group 20: ACTIVE SEAT™................1436
    Essential or Recommended Tools................1558
    Other Material................1559
    Specifications................1614
    Purging Air from ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company System................1436
    Remove and Install ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company................1437
    Remove and Install ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company Actuator................1437
    Remove and Install Actuator Hoses................1568
    Remove and Install Seat Control Valve Assembly................1571
    Exploded View—ACTIVE SEAT™ Hydraulic Control Valve Block................1437
    Remove and Install Accumulator................1578
    Checking and Charging Replacement Accumulators................1580
    Repair Air System................1590
    Remove and Install Air Reservoir................1594
    Repair Suspension................1595
    Repair Seat Back................1603
  Group 25: Armrest................1437
    Remove and Install Armrest Control................1607
    Disassemble and Assemble Armrest Adjustment Assembly................1608
  Group 30: Cab Door and Windshield................1437
    Specifications................1614
    Repair Cab Door Latch................1615
    Cab Door Adjustment—Step 1................1437
    Cab Door Adjustment—Step 2................1437
    Cab Door Adjustment—Step 3................1437
    Cab Door Adjustment—Step 4................1437
    Cab Door Adjustment—Step 5................1437
    Replace Windshield Glass or Seal................1625
Section 99: Dealer Fabricated Tools................1632
  Group 05: Fabricated Tools................1632
    Fabricated Tools................1632
    DF1057—Axle Adjusting Tool................1633
    DFRW2—Needle Valve Test Hose Assembly................1635
    DFRW4—Axle Wheel Hub Tool................1637
    DFRW20—Compressor Holding Fixture................1638
    DFRW30A—Axle Jacking Tool................1639
    DRFW60 - DFRW61 - DFRW62—Extension Harnesses................1640
    DFRW63 - DFRW64 - DFRW65 - DFRW66 - DFRW81—Tap-Out Harnesses................1642
    DFRW89—Transmission Shaft and Clutch Holding Fixture Tool may be purchased. Order JT07203................1629
    DFRW90—Transmission Support Plate................1647
    DFRW91—Guide Pins................1648
    DFRW92—Mounting Guide Pins................1649
    DFRW93—Auxiliary Drive Support Bracket Tool may be purchased. Order JDG860................1629
    DFRW94—Rear Axle Support Stand................1652
    DFRW95—MFWD Clutch Plate Compressor................1653
    DFRW96—Rear Axle Lifting Tool................1654
    DFRW97—Transmission Countershaft Rotation Screw................1655
    DFRW98—Rear Axle Guide Pin................1656
    DFRW99—540/1000 PTO Adapter Assembly Bearing Installer................1657
    DFRW100—Fan Drive Hub Holding Tool Tool may be purchased. Order JDG896................1629
    DFRW101—Fan Drive Bearing Installer................1659
    DFRW105—Secondary Brake Bleed Hose................1660
    DFRW106—Front Axle Rear Pivot Pin Tool................1661
    DFRW107—Front Axle Front Pivot Pin Tool................1662
    DFRW111—Flushing Wand................1663
    DFRW112—Transmission Flushing Shift Valves................1664
    DFRW117—Transmission-Hydraulic Flusher................1666
    DFRW132—Differential Side Bevel Gear End Play Tool................1669
    DFRW137—Pump Drive Housing Lifting Bracket................1671
    DFRW139—Thermal Expansion Valve Replacement Tool................1672
    DFRW148—ActiveSeat™ Control Valve Holding Tool................1674
    DFRW150—SCV-Hitch Valve Stack Lifting Bracket................1675
    DFRW151—Radiator Cap Adapter................1677
         
John Deere Tractors 8120, 8220, 8320, 8420, 8520 Repair Service Manual (TM1970)