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)