John Deere Tractors 8120, 8220, 8320, 8420, 8520 Repair Service Manual (TM1970)
Catalog:
Price: US$ 69.00
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 - 8120, 82208320, 8420and 8520Tractors Repair Technical Manual.pdf
tm1970 - 8120, 82208320, 8420and 8520Tractors Repair Technical Manual.epub
Total Pages: 1,662 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English
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
tm1970 - 8120, 82208320, 8420and 8520TractorsRepair
Table of Contents
Foreword
Dealer Predelivery Information Form
Section 10: General Information
Group 05: Safety
Recognize Safety Information
Handle Fluids Safely—Avoid Fires
Prevent Battery Explosions
Prepare for Emergencies
Prevent Acid Burns
Handle Chemical Products Safely
Avoid High-Pressure Fluids
Park Machine Safely
Support Machine Properly
Wear Protective Clothing
Work in Clean Area
Service Machines Safely
Work In Ventilated Area
Illuminate Work Area Safely
Replace Safety Signs
Use Proper Lifting Equipment
Avoid Harmful Asbestos Dust
Avoid Heating Near Pressurized Fluid Lines
Remove Paint Before Welding or Heating
Use Proper Tools
Construct Dealer-Made Tools Safely
Decommissioning — Proper Recycling and Disposal of Fluids and Components
Live With Safety
Group 10: General Information
General Specifications
Overall Dimensions
Sealants and Adhesives Cross-Reference Chart
Metric Bolt and Screw Torque Values
Unified Inch Bolt and Screw Torque Values
Glossary of Terms
Section 20: Engine
Group 00: Component Removal and Installation
Essential or Recommended Tools
Specifications
Remove Engine
Install Engine
Remove Front Frame—MFWD and Two-Wheel Drive
Install Front Frame
Group 05: Engine Repair
Engine Repair—Use CTM86 or CTM255
Section 30: Fuel and Cooling Systems
Group 05: Diesel Fuel System
Specifications
Remove and Install Fuel Tank
Replace Fuel Filter, Fuel Pump, and Bleed Fuel System
Group 10: Air Intake System
Specifications
Other Material
Service Air Intake System
Repair Aspirator
Group 15: Engine Cooling System
Essential or Recommended Tools
Specifications
Test Radiator and Coolant Tank Cap
Remove and Install Radiator/Aftercooler
Auxiliary Drive Belt Routing
Inspect Fan Belt Tensioner
Remove and Install Viscous Fan Drive
Remove and Install Vistronic Fan Drive (8520)
Group 20: Coolers and Air Conditioning Condenser
Essential or Recommended Tools
Specifications
Other Material
Remove Air Conditioning Condenser/Fuel Cooler
Install Air Conditioning Condenser/Fuel Cooler
Replace Hydraulic Oil Cooler
Leak Test Hydraulic Oil Cooler
Section 40: Electrical
Group 05: Connectors
Essential or Recommended Tools
Other Material
Use Electrical Insulating Compound
Using High-Pressure Washers
Repair AMP Connector
Remove Connector Body from Blade Terminals
Repair CINCH Connectors
Repair 32 and 48 Way CINCH Connectors
Repair CPC CPC is a trademark of AMP Incorporated Blade Type Connectors
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
Repair DEUTSCH DEUTSCH is a trademark of Deutsch Company Connectors
Repair DEUTSCH™ Implement Connectors
Repair Small MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated Socket Connector
Repair Small MATE-N-LOC MATE-N-LOC is a trademark of AMP Incorporated Pin Connector
Repair (Pull Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors
Repair (Push Type) METRI-PACK METRI-PACK is a trademark of Delphi Packard Electric Systems Connectors
Repair SUMITOMO™ Connectors
Repair Weather Pack Weather Pack is a trademark of Packard Electric Connector
Repair YAZAKI™ Connectors
Group 10: Wiring Harness Routings
Wire Number and Color Codes
Ground Point Locations
#1 Cab Ground (Roof)
#2 Cab Ground (Floor)
# 3 Chassis (Single Point Ground)
Miscellaneous Grounds
Engine/Chassis Harness Routing and Component Identification
Cab Harness Routing and Component Identification—North American
Cab Harness Routing and Component Identification—European
Roof Harness Routing and Component Identification
Transmission Harness Routing and Component Identification
INDEPENDENT LINK SUSPENSION INDEPENDENT LINK SUSPENSION is a trademark of Deere & Company Harness
Remote Mirror Harness Routing and Component Identification
GREENSTAR GREENSTAR is a trademark of Deere & Company Harness Routing
ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company Harness Routing and Component Identification
Starter and Battery Cable Routings
Alternator Power Cable Routing
Group 15: Charging Circuit
Repair Alternator—Use CTM
Exploded View—Alternator
Replace Alternator
Group 20: Starting Circuit
Essential or Recommended Tools
Specifications
Repair Starter—Use CTM
Repair Starter—Use CTM
Remove and Install Starter Motor
Replace Fusible Link
Replace Starter Circuit Relay
Replace Neutral Start Switch
Group 25: Relays, Fuses, Solenoids, and Switches
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures—Solenoids
Disconnect Electrical Circuit
Load Center Fuses
Load Center Relays and Diodes—North America
Load Center Relays and Diodes—European
Replace Starting Aid Solenoid
Replace Electro-Hydraulic Shift Valve Solenoids
Replace Park Brake Release Solenoid
Replace PTO Solenoid
Replace MFWD Solenoid
Replace Differential Lock Solenoid
Replace SCV Solenoids
Replace Hitch Valve Solenoids
Replace Engine Oil Pressure Switch
Replace Air Filter Restriction Switch
Replace Transmission Manifold Electrical Switches
Replace Differential Lock Switch
Exploded View—Right Console Controls and Switches
Replace Right Console Switches
Replace Dome Light Switch
Replace Cab Door Light Switch
Replace Beacon Light Switch
Replace Starting Aid and Ignition Switch
Replace Seat Raise/Lower Switch
Replace Operator Presence Seat Switch
Replace Brake Light Switch
Replace Hand Brake Switch and Potentiometer—European
Replace Hydraulic Oil Filter Restriction Switch
Replace Hydraulic Clean-Oil Level Switch
Replace External Hitch Raise/Lower Switches
Replace A/C High- and Low-Pressure Switch
Replace A/C Deicing Switch and Blower Motor Resistor
Group 30: Monitoring Systems and Sensors
Essential or Recommended Tools
Specifications
Other Material
Replace Instrument Control Unit and SCV Setup Panel
Replace Bulbs in Instrument Control Unit (ICU)
Replace Bulbs In SCV Set-Up Panel (SUP)
Replace Corner Post Display and Bulbs
Replace Steering Column Module Bulbs
Replace Steering Column Module
Control Units and Component Identification
Replace Control Units
Replace EEPROM EEPROM—Electrically Erasable Programmable Read-Only Memory In Control Units
Remove EEPROM
Install Replacement EEPROM
Replace Engine Coolant Temperature Sensor
Replace Engine Crank Speed Sensor
Replace Fuel Level Sensor
Replace Fuel Temperature Sensor
Replace Air Intake Temperature Sensor
Replace Foot Throttle Sensor
Replace Wheel Speed Sensor
Replace PTO Speed Sensor—Standard PTO
Replace Radar Speed Sensor
Replace Hydraulic Oil Temperature Sensor
Replace INDEPENDENT LINK SUSPENSION INDEPENDENT LINK SUSPENSION is a trademark of Deere & Company Cylinder Position Sensor
Replace Hitch Position Sensor
Replace Draft Sensing Sensor
Adjust Draft Sensing Sensor
CLIMATRAK CLIMATRAK is a trademark of Deere & Company Wire Harness and Component Identification
Replace Outlet Duct Temperature Sensor
Replace Cab Temperature Sensor
Replace Fresh Air Temperature Sensor
Replace Evaporator Temperature Sensor
Group 35: Armrest Control
Armrest Test Procedures
Replace Armrest Control Assembly
Replace Armrest Control Unit (ACU)
Exploded View—Armrest Control
Replace Armrest Controls
Exploded View—Engine Speed Control
Exploded View—Transmission Control
Exploded View—SCV Control Lever
Replace Hitch Control
Group 40: Implement and Accessory Connectors
Replace Seven-Terminal Outlet Socket
Replace GREENSTAR GREENSTAR is a trademark of Deere & Company Terminal Connector
Replace Three-Pin Accessory Outlets
Diagnostic/Program and Front PTO Control Unit Connector
Replace and Adjust Field Lights
Group 45: Convenience and Accessory Components
Replace Seat Air Compressor Motor
Replace Circulation Blower Motor
Replace Heating, Ventilating, and Air Conditioning (HVAC) Pressurizer Blower Motor
Replace Wiper Motors
Replace Windshield Washer Pumps
Replace Hydraulic Charge Pump Auxiliary Heater
Replace Transmission Auxiliary Heater
Remove Radio and Speakers
Section 50: Power Shift Transmission
Group 00: Component Removal and Installation
Essential or Recommended Tools
Other Material
Specifications
Remove Transmission
Install Transmission
Install Scavenge Pump
Remove Ground-Driven Pump
Install Ground-Driven Pump
Group 05: Miscellaneous Repair
Essential or Recommended Tools
Other Material
Specifications
Disengage Park Brake
Using a Hydraulic Hand Pump to Release Park Brake
Repair Clutch Pedal
Replace Clutch Cable
Replace Transmission Input Shaft Front Seal
Replace Auxiliary Drive Pulley
Replace Transmission Input Shaft Rear Seal Transmission in Tractor
Group 10: Transmission
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures—Power Shift Transmission
Clutch Cover Plate Orientation
Install Transmission Onto Repair Stand
Cross-Sectional View—Transmission Assembly (MFWD without ILS™)
Disassemble Transmission
Exploded View—Manifold Valves
Remove and Install Manifold Valves
Cleaning Procedures—Manifold, Rear Cover, and Valves
Disassemble and Assemble Manifold
Inspect and Clean Electro-Hydraulic Valve
Disassemble and Assemble Manifold
Disassemble and Assemble Transmission Rear Cover
Cross-Sectional View—Transmission Input Shaft
Disassemble Input Shaft
Assemble Input Shaft Gear/Clutch Assemblies
Assemble Input Shaft
Cross-Sectional View—Transmission Countershaft
Disassemble Countershaft
Assemble Countershaft Gear/Clutch Assemblies
Assemble Countershaft
Cross-Sectional View—Transmission Output Shaft Assembly
Disassemble Output Shaft Assembly
Disassemble, Inspect, and Assemble Planetary Carrier
Inspect Clutch Disks
Assemble Output Shaft Assembly
Assemble Transmission
Remove Transmission From Repair Stand
Section 56: Drive Systems
Group 00: Component Removal and Installation
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures
Remove MFWD Clutch
Install MFWD Clutch
Remove Pump Drive Housing
Install Pump Drive Housing
Remove Final Drive
Install Final Drive
Group 05: Rear Differential and Input Quill
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures—Rear Differential and Input Quill
Remove Differential
Cross-Sectional View—Rear Differential
Disassemble, Inspect, and Assemble Differential
Remove Input Quill Assembly
Cross-Sectional View—Input Quill
Disassemble, Inspect, and Assemble Input Quill
Determine Differential Drive Shaft Cone Point Shim Pack
Assemble and Install Differential Drive Shaft
Install Input Quill Assembly
Install Differential
Side Quill Adjustment Information
Measure End Play and Adjust Differential Preload
Adjust Differential Backlash
Group 10: Final Drives
Essential or Recommended Tools
Specifications
General Repair Procedures—Final Drive
Cross-Sectional View—Final Drive
Disassemble Final Drive
Disassemble, Inspect, and Assemble Planet Pinion Carrier
Remove Axle Housing
Disassemble and Assemble Axle Housing
Disassemble, Inspect, and Assemble Axle Shaft
Install Axle Housing
Adjust Axle Bearings
Group 15: Rear PTO
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures—PTO Gear Train
Remove and Install PTO Output Housing
Cross-Sectional View—PTO Clutch Assembly
Remove PTO Clutch
Disassemble and Assemble PTO Clutch
Install PTO Clutch
Remove, Inspect, and Install PTO Clutch Valve
Cross-Sectional View—Standard PTO Output Assembly
Disassemble and Assemble Standard PTO Output Housing
Cross-Sectional View—Optional PTO Output Assembly
Disassemble Optional PTO Output Housing Assembly
Assemble Optional PTO Output Housing Assembly
Remove 540/1000 PTO Adapter Assembly
Disassemble and Assemble 540/1000 PTO Adapter Assembly
Install 540/1000 PTO Adapter Assembly
Group 20: Hydraulic Pump Drive
Essential or Recommended Tools
Specifications
General Repair Procedures—Hydraulic Pump Drive
Repair Hydraulic Pump Drive
Cross-Sectional View—Pump Drive Gear Train
Disassemble and Assemble Hydraulic Pump Hypoid Pinion Drive Shaft
Disassemble Hypoid Input Gear Quill Assembly
Assemble Hypoid Input Gear Quill
Set Cone Point—Hypoid Pinion Drive Shaft
Set Cone Point—Hypoid Pinion Drive Gear
Verify Gear Set Backlash
Adjust Hypoid Pinion Drive Shaft End Play
Group 25: MFWD Clutch
Essential or Recommended Tools
Specifications
General Repair Procedures—MFWD Clutch Assembly
Cross-Sectional View—MFWD Clutch Assembly (Without INDEPENDENT LINK SUSPENSION™)
Cross-Sectional View—MFWD Clutch Assembly (With INDEPENDENT LINK SUSPENSION™)
Disassemble Clutch
Assemble Clutch
Group 30: Drivelines
Specifications
Replace MFWD Drive Shaft
Cross-Sectional View—Mid-Frame Drive Shafts
Repair Mid-Frame Auxiliary Drive Shaft
Repair Mid-Frame Output Drive Shaft
Section 57: MFWD Axles
Group 00: Component Removal and Installation
Essential or Recommended Tools
Specifications
Remove MFWD Axle
Install MFWD Axle
Remove and Install Final Drive Assembly
Group 05: Final Drives
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures—MFWD Axle
CROSS-SECTIONAL VIEW—PLANETARY CARRIER AND WHEEL HUB
Remove and Disassemble Planetary Carrier and Wheel Hub
Assemble and Install Planetary Carrier and Wheel Hub
Cross-Sectional View—Knuckle Spindle Assembly
Disassemble, Inspect, and Assemble Knuckle Spindle Assembly
Replace Kingpin Bearings and Seals
Determine Kingpin Shim Pack
Group 10: Axle Housing
Essential or Recommended Tools
Specifications
Install and Remove MFWD Axle To Rollover Stand
Remove Right-Hand Axle Housing
Disassemble Left-Hand Axle Housing and Determine Bearing Cup Shim Pack
Measure Backlash
Adjust Backlash
Backlash Shim Pack Example and Worksheet
Install Left-Hand Axle Housing Bearing Cup and Shim Pack
Disassemble Right-Hand Axle Housing and Determine Shim Pack
Determine Shim Pack
Preload Shim Pack Example and Worksheet
Install Right-Hand Axle Housing
Group 15: Differential
Essential or Recommended Tools
Specifications
Remove Differential
Cross-Sectional View—Differential Housing (North American)
Cross-Sectional View—Differential Housing (European)
Repair Differential
Assemble Differential
Group 20: Input Gear Train
Essential or Recommended Tools
Other Material
Specifications
Cross-Sectional View—Input Gear Train
Disassemble Input Gear Train
Determine Pinion Shaft Cone Point Shim Pack
Assemble Input Gear Train
Adjust Pinion Shaft
Group 25: Oscillation
Cross-Sectional View—Oscillating Supports
Repair Front Support
Repair Rear Support
Group 30: Secondary Brake
Essential or Recommended Tools
Specifications
Cross-Sectional View—Secondary Brake (European Tractors)
Disassemble, Inspect, and Assemble Secondary Brake
Test Secondary Brake
Bleed Secondary Hydraulic Brake
Check Secondary Brake Operation
Section 58: INDEPENDENT LINK SUSPENSION™ Axle
Group 00: Component Removal and Installation
Essential or Recommended Tools
Other Material
Specifications
General Repair Procedures
Remove Differential Case
Install Differential Case
Group 05: Controls
Essential or Recommended Tools
Other Material
Specifications
Relieve Pressure of Independent Link Suspension System ILS ILS is a trademark of Deere & Company
Remove Independent Link Suspension ILS ILS is a trademark of Deere & Company Valve Housing
Install Valve Housing
Independent Link Suspension Hydraulic Control Valve Block
Remove and Install Accumulators
Check and Charge Accumulators
Checking Gas side Oil Charge of 1L Accumulators
Group 10: Final Drives
Essential or Recommended Tools
Other Material
Specifications
Cross-Sectional View—Planetary Carrier and Wheel Hub
Remove and Disassemble Planetary Carrier and Wheel Hub
Assemble and Install Planetary Carrier and Wheel Hub
Group 15: Drive Shafts
Essential or Recommended Tools
Other Material
Specifications
Cross-Sectional View—Final Drive Assembly
Disassemble, Inspect, and Assemble Knuckle Housing Assembly
Remove Drive Shaft
Inspect, Disassemble, and Assemble Drive Shaft
Cross-Sectional View—Differential Output (With Brakes)
Cross-Sectional View—Differential Output
Repair Output Yoke/Shaft and Outer Housing Cover
Group 20: Brakes
Essential or Recommended Tools
Specifications
Cross-Sectional View—Differential with Brakes
Introduction
Repair Brakes
Group 25: Differential
Essential or Recommended Tools
Other Material
Specifications
Cross-Sectional View— Independent Link Suspension MFWD Input Gears
Remove Input Gears
Remove Independent Link Suspension Differential Housing Assembly
Cross-Sectional View—Independent Link Suspension Differential with Hydraulic Differential Lock
Disassemble, Inspect, and Assemble Differential Housing Assembly
Adjust Differential Housing Bearing Preload and Differential Backlash
Install Differential Housing Assembly
Group 30: Steering
Essential or Recommended Tools
Specifications
Steering Tie Rod
Exploded View—Steering Tie Rod
Remove and Disassemble Outer Tie Rod End Assembly
Assemble and Install Outer Tie Rod End Assembly
Cross-Sectional View—Inner Tie Rod Assembly
Remove, Disassemble, Assemble, and Install Inner Tie Rod End Assembly
Cross-Sectional View—Steering Cylinder
Remove Steering Cylinder Assembly
Replace Sealing Rings
Install Steering Cylinder Assembly
Cross-Sectional View—Steering Rod
Remove Steering Rod
Replace Steering Rod and Rod Guide Seals
Install Steering Rod
Group 35: Suspension
Essential or Recommended Tools
Other Material
Specifications
Remove and Install Suspension Cylinder
Replace Self-Aligning Bushing
Replace Cylinder Assembly Pivot Pins
Cross-Sectional View—Suspension Cylinder
Disassemble and Assemble Suspension Cylinder
Cross-Sectional View—Suspension Cylinder Seals
Replace Suspension Cylinder Seals
Cross-Sectional View—Upper Control Arm Pivot
Remove and Disassemble Upper Control Arm Pivot
Assemble and Install Upper Control Arm Pivot
Cross-Sectional View—Upper Control Arm Pivot Replacement or ( Ser No 026160 — )
Install New Upper Control Arm Replacement Pivot Shaft or ( Ser No 026160 — )
Drill Dowel Pin Holes for Pivot Replacement or ( Ser No 026160 — )
Install Upper Control Arm Pivot Bearings and Caps for Pivot Replacement or ( Ser No 026160 — )
Cross-Sectional View—Upper Control Arm Ball Joint
Replace Upper Control Arm Ball Joint
Cross-Sectional View—Lower Control Arm Front Pivot
Repair Lower Control Arm Front Pivot
Cross-Sectional View—Lower Control Arm Rear Pivot
Repair Lower Control Arm Rear Pivot
Cross-Sectional View—Lower Control Arm Ball Joint
Replace Lower Control Arm Ball Joint
Section 60: Steering and Brakes
Group 05: Steering Column
Specifications
Repair Steering Column (Standard and AutoTrac)
Group 10: Steering Control Assembly
Specifications
Remove and Install Steering Control Assembly (Standard and AutoTrac)
Remove and Install Flowmeter Assembly (AutoTrac)
Group 15: Steering Cylinders
Other Material
Service Parts Kits
Specifications
Remove and Install Steering Cylinder
Repair Steering Cylinder—Two-Wheel Drive
Repair Steering Cylinder—MFWD
Group 20: Brake Valve
Service Parts Kits
Specifications
General Repair Procedures—Brake Valve
Remove and Install Brake Valve
Disassemble, Inspect, and Assemble Brake Valve
Bleed Brakes
Check Manual Brakes
Group 25: Brake Components
Specifications
Remove, Inspect, and Install Brake Pistons, Plates, and Disks
Group 30: Trailer Brakes
Repair Air Trailer Brakes
Section 70: Hydraulics
Group 00: Component Removal and Installation
Essential or Recommended Tools
Other Material
Specifications
Remove Tandem Pump
Prelubricate and Install Tandem Pump
Remove and Install Secondary Pump
Remove and Install Hitch-SCV Valve Stack
Remove and Install Hitch Frame
Group 05: Hydraulic System Repair and Cleanup
Essential or Recommended Tools
Specifications
General Repair Procedures—Hydraulic Systems
Install Hydraulic Fittings
Drain Hydraulic System
Fill Hydraulic System
Prelubricate Pump Drive
Conditions Requiring Hydraulic System Cleanup
Hydraulic Cleanup Procedure
Flush the Clean-Oil Reservoir
Clean Priority Valve
Clean Differential Housing
Clean Transmission Housing
Clean Pump Drive Housing
Flush Transmission Manifold
Group 10: Tandem Hydraulic Pump (Steering-Brakes-Charge)
Other Material
Replace Shaft Seal
Group 15: Secondary Hydraulic Pump (Hitch-SCV)
Essential or Recommended Tools
Specifications
Pump Identification
Replace Shaft Seal—45 cm3 Pump
Service Hydraulic Pump Control—45 cm3 Pump
Repair Hydraulic Pump—45 cm3 Pump
Exploded View—57 cm3 Secondary Hydraulic Pump
Service Hydraulic Pump Control—57 cm3 Pump
Repair 57 cm3 Pump
Group 20: Filter Bypass
Service Parts Kits
Specifications
Remove, Inspect, and Install Hydraulic Filter Bypass
Group 25: Hitch Valve, Selective Control Valves, and Couplers
Essential or Recommended Tools
Specifications
Disassemble and Assemble Hitch-SCV Valve Stack
Disassemble, Inspect, and Assemble Hitch Valve
Test High Pressure Relief Valve
Disassemble, Inspect, and Assemble Selective Control Valve
Repair SCV Couplers
Group 30: Hitch
Essential or Recommended Tools
Other Material
Specifications
Remove and Install Lift Cylinder
Cross-Sectional and Exploded View—Hitch Lift Cylinder
Disassemble, Inspect, and Assemble Lift Cylinder
Replace Rockshaft Bushings
Repair Draft Sensing
Section 80: Miscellaneous
Group 05: Hood
Position Hood Forward
Remove and Install Hood
Group 10: Front Axle (Two-Wheel Drive)
Essential or Recommended Tools
Specifications
Other Material
Remove Front Axle
Install Front Axle
Check Pivot Support Bushing Wear
Replace Pivot Support Bushings
Replace Front Axle Pivot Pins
Replace Knee Bushings
Replace Wheel Bearings
Replace Axle Pivot Pins
Group 15: Wagon and Pick-Up Hitch
Specifications
Repair Wagon Hitch
Adjust Wagon Hitch Release
Repair Pick-Up Hitch
Section 90: Operator Station
Group 00: Component Removal and Installation
Essential or Recommended Tools
Specifications
Remove Cab
Install Cab
Repair Cab
Group 05: Heating, Ventilating, and Air Conditioning (HVAC)
Heater Line Routing
Remove HVAC Module
Install HVAC Module
Remove and Install Heater Core
Remove and Install Heater Control Valve (Without CLIMATRAK CLIMATRAK is a trademark of Deere & Company )
Remove, Test, and Install Heater Control Valve (With CLIMATRAK CLIMATRAK is a trademark of Deere & Company XXXXX-010001)
Remove and Install Heater Control Valve (With CLIMATRAK CLIMATRAK is a trademark of Deere & Company 010001-XXXXX)
Leak Test Heater Control Valve
Install Heater Control Valve
Remove and Install Control Cable
Adjust Heating/Cooling Controls
Group 10: Air Conditioning System
Essential or Recommended Tools
Other Material
Specifications
Service Parts Kits
Hose and Tubing O-Ring Connection Torques
Discharge Air Conditioning System
Flushing, Purging, and Evacuating Information
Flush Air Conditioning System
Purge Air Conditioning System
Evacuate Air Conditioning System
Charge Air Conditioning System
Refrigerant Oil Information
Check Compressor Oil Charge
Determine Correct Refrigerant Oil Charge
Add Refrigerant Oil to System
Add Refrigerant Oil to Pressurized System
Remove and Install Compressor
Test Volumetric Efficiency
Test Shaft Seal Leakage
Disassemble and Assemble Compressor Clutch
Check Clutch Hub Clearance
Inspect Compressor Manifold
Disassemble, Inspect, and Assemble Compressor
Remove and Install Compressor Relief Valve
Replace Receiver-Dryer
Remove and Install Expansion Valve
Remove Air Conditioning Condenser
Leak Test Condenser
Leak Test Evaporator
Remove and Install Evaporator
Group 15: Air Suspension Seat
Essential or Recommended Tools
Other Material
Specifications
Remove and Install Seat
Repair Air System
Repair Suspension
Repair Seat Back
Repair Control Knobs
Group 20: ACTIVE SEAT™
Essential or Recommended Tools
Other Material
Specifications
Purging Air from ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company System
Remove and Install ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company
Remove and Install ACTIVE SEAT ACTIVE SEAT is a trademark of Deere & Company Actuator
Remove and Install Actuator Hoses
Remove and Install Seat Control Valve Assembly
Exploded View—ACTIVE SEAT™ Hydraulic Control Valve Block
Remove and Install Accumulator
Checking and Charging Replacement Accumulators
Repair Air System
Remove and Install Air Reservoir
Repair Suspension
Repair Seat Back
Group 25: Armrest
Remove and Install Armrest Control
Disassemble and Assemble Armrest Adjustment Assembly
Group 30: Cab Door and Windshield
Specifications
Repair Cab Door Latch
Cab Door Adjustment—Step 1
Cab Door Adjustment—Step 2
Cab Door Adjustment—Step 3
Cab Door Adjustment—Step 4
Cab Door Adjustment—Step 5
Replace Windshield Glass or Seal
Section 99: Dealer Fabricated Tools
Group 05: Fabricated Tools
Fabricated Tools
DF1057—Axle Adjusting Tool
DFRW2—Needle Valve Test Hose Assembly
DFRW4—Axle Wheel Hub Tool
DFRW20—Compressor Holding Fixture
DFRW30A—Axle Jacking Tool
DRFW60 - DFRW61 - DFRW62—Extension Harnesses
DFRW63 - DFRW64 - DFRW65 - DFRW66 - DFRW81—Tap-Out Harnesses
DFRW89—Transmission Shaft and Clutch Holding Fixture Tool may be purchased. Order JT07203
DFRW90—Transmission Support Plate
DFRW91—Guide Pins
DFRW92—Mounting Guide Pins
DFRW93—Auxiliary Drive Support Bracket Tool may be purchased. Order JDG860
DFRW94—Rear Axle Support Stand
DFRW95—MFWD Clutch Plate Compressor
DFRW96—Rear Axle Lifting Tool
DFRW97—Transmission Countershaft Rotation Screw
DFRW98—Rear Axle Guide Pin
DFRW99—540/1000 PTO Adapter Assembly Bearing Installer
DFRW100—Fan Drive Hub Holding Tool Tool may be purchased. Order JDG896
DFRW101—Fan Drive Bearing Installer
DFRW105—Secondary Brake Bleed Hose
DFRW106—Front Axle Rear Pivot Pin Tool
DFRW107—Front Axle Front Pivot Pin Tool
DFRW111—Flushing Wand
DFRW112—Transmission Flushing Shift Valves
DFRW117—Transmission-Hydraulic Flusher
DFRW132—Differential Side Bevel Gear End Play Tool
DFRW137—Pump Drive Housing Lifting Bracket
DFRW139—Thermal Expansion Valve Replacement Tool
DFRW148—ActiveSeat™ Control Valve Holding Tool
DFRW150—SCV-Hitch Valve Stack Lifting Bracket
DFRW151—Radiator Cap Adapter
John Deere Tractors 8120, 8220, 8320, 8420, 8520 Repair Service Manual (TM1970)
