Complete service repair manual for John Deere Crawler Dozer 850J with Engines 6068HT090, with technical information to maintain, repair, and service like professional mechanics.

John Deere Crawler Dozer 850J workshop service repair manual 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.

TM12323 -John Deere 850J Crawler Dozer Technical Manual - Repair.PDF
TM12323 -John Deere 850J Crawler Dozer Technical Manual - Repair.EPUB

Total Pages: 730 pages
File Format: PDF/EPUB/MOBI/AZW (PC/Mac/Android/Kindle/iPhone/iPad; bookmarked, ToC, Searchable, Printable)
Language: English

MAIN SECTIONS
 Foreword
   Technical Information Feedback Form
   General Information
      Safety
      Torque Values
   Tracks
      Track System
   Axles and Suspension Systems
      Drive Axle Housing and Support
      Axle Shaft, Bearings and Reduction Gears
   Transmission
      Remove and Install
      Control Linkage
      Hydrostatic System
   Engine
      Removal and Installation
   Engine Auxiliary Systems
      Cold Weather Starting Aid
      Cooling System
      Engine Speed Control
      External Exhaust Systems
      External Fuel Supply Systems
   Dampener Drive
      Elements
   Park Brake
      Park Brake
      Control Linkage
      Hydraulic System
   Equipment Attaching
      Drawbar
   Frames, Chassis, or Supporting Structure
      Frame Installation
      Frame Bottom Guards
      Chassis Weights
   Operator’s Station
      Removal and Installation
      Operator Enclosure
      Seat and Seat Belt
      Heating and Air Conditioning
   Sheet Metal
      Hood and Engine Enclosures
   Safety, Convenience and Miscellaneous
      Horn and Warning Devices
   Bulldozer
      Blade
      Frames
      Hydraulic System
   Ground Conditioning Tool
      Ripper
   Dealer Fabricated Tools

tm12323 - 850J Crawler Dozer

Table of Contents

Foreword

Technical Information Feedback Form

Section 00: General Information

Group 01: Safety

Recognize Safety Information

Follow Safety Instructions

Operate Only If Qualified

Wear Protective Equipment

Avoid Unauthorized Machine Modifications

Inspect Machine

Stay Clear of Moving Parts

Avoid High-Pressure Fluids

Beware of Exhaust Fumes

Prevent Fires

Prevent Battery Explosions

Handle Chemical Products Safely

Dispose of Waste Properly

Prepare for Emergencies

Add Cab Guarding For Special Uses

Use Steps and Handholds Correctly

Start Only From Operator's Seat

Use and Maintain Seat Belt

Prevent Unintended Machine Movement

Avoid Work Site Hazards

Keep Riders Off Machine

Avoid Backover Accidents

Avoid Machine Tip Over

Add and Operate Attachments Safely

Park And Prepare For Service Safely

Service Cooling System Safely

Remove Paint Before Welding or Heating

Make Welding Repairs Safely

Drive Metal Pins Safely

Group 03: Torque Values

Metric Bolt and Cap Screw Torque Values

Additional Metric Cap Screw Torque Values

Unified Inch Bolt and Cap Screw Torque Values

Service Recommendations for 37° Flare and 30° Cone Seat Connectors

Service Recommendations for O-Ring Boss Fittings

O-Ring Boss Fittings In Aluminum Housing Service Recommendations—Excavators

Service Recommendations for Flared Connections—Straight or Tapered Threads

Service Recommendations For Flat Face O-Ring Seal Fittings

O-Ring Face Seal Fittings With SAE Inch Hex Nut And Stud End For High Pressure Service Recommendations

O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For Standard Pressure Service Recommendations

O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For High Pressure Service Recommendations

Service Recommendations for Metric Series Four Bolt Flange Fitting

Service Recommendations For Inch Series Four Bolt Flange Fittings

Inch Series Four Bolt Flange Fitting For High Pressure Service Recommendations

Service Recommendations For Non-Restricted Banjo (Adjustable) Fittings

Service Recommendations For O-Ring Boss Fittings With Shoulder

Metric 24° O-Ring Seal DIN 20078 Service Recommendations

Section 01: Tracks

Group 0130: Track System

Welding On Machine

Track Guides and Rock Guards Remove and Install

Carrier Roller Wear Inspection

Carrier Roller Remove and Install

Carrier Roller Disassemble and Assemble

Metal Face Seals Inspection

Carrier Roller Leakage Test

Track Roller Wear Inspection

Track Roller Remove and Install

Track Roller Disassemble and Assemble

Track Roller Leakage Test

Track Shoe Grouser Wear Inspection

Track Shoe Remove and Install

Pivot Shaft Remove and Install

Pivot Shaft Disassemble and Assemble

Crossbar Remove and Install

Crossbar Disassemble and Assemble

Track Link Height Inspection

Bushing Outside Diameter for Lubricated Track Chain Inspection

Track Pitch for Lubricated Track Chain Inspection

Lubricated Track Chain Remove and Install

Lubricated Track Chain to Turn Bushings and Lubricate Chain Disassemble

Lubricated Track Chain to Turn Bushings and Lubricate Chain Assemble

Lubricated Track Chain to Turn Pins and Bushings and Not Lubricate Disassemble and Assemble

Track Sag Adjustment

Track Adjuster Cylinder and Recoil Spring Remove and Install

Track Adjuster Recoil Spring Disassemble and Assemble

Track Adjuster Cylinder Disassemble and Assemble

Track Frame Remove and Install

Front Idler Wear Inspection

Front Idler Remove and Install

Front Idler Disassemble and Assemble

Front Idler Adjustment

Front Idler Oil Leakage Test

Sprocket Segment Remove and Install

Section 02: Axles and Suspension Systems

Group 0201: Drive Axle Housing and Support

Final Drive Remove and Install

Group 0250: Axle Shaft, Bearings and Reduction Gears

Planet Carrier Remove and Install

Planet Carrier Disassemble and Assemble

Ring Gear and Hub Remove and Install

Ring Gear and Hub Disassemble and Assemble

Final Drive Metal Face Seal Remove and Install

Final Drive Seal Leakage Check

Inner Final Drive Housing Remove and Install

Inner Final Drive Housing Disassemble and Assemble

Section 03: Transmission

Group 0300: Remove and Install

Hydrostatic Pump Remove and Install

Hydrostatic Motor Remove and Install

Group 0315: Control Linkage

Transmission Control Lever (TCL) Remove and Install

Transmission Control Lever (TCL) Disassemble and Assemble

Group 0360: Hydrostatic System

Hydrostatic Pump Disassemble

Charge Pump Disassemble and Assemble

Pump Displacement Control Valve (PDCV) Disassemble and Assemble

Multi-Function Valve Remove and Install

Multi-Function Valve Disassemble and Assemble

Hydrostatic Pump Assemble

Hydrostatic Motor Disassemble

Hydrostatic Motor Assemble

Hydraulic Integrated Circuit (HIC) Valve Remove and Install

Hydraulic Integrated Circuit (HIC) Valve Disassemble and Assemble

Hydrostatic Reservoir Remove and Install

Hydraulic Fan Motor Remove and Install

Hydraulic Fan Pump Remove and Install

Hydraulic Fan Reversing Valve Remove and Install

Hydraulic Fan Reversing Valve Disassemble and Assemble

Section 04: Engine

Group 0400: Removal and Installation

Engine Remove and Install

Oil Pan Remove and Install

Flywheel Remove and Install

Engine Mounts Remove and Install

Section 05: Engine Auxiliary Systems

Group 0505: Cold Weather Starting Aid

Starting Aid Assembly Remove and Install

Group 0510: Cooling System

Fan Blade Remove and Install

Cooling Package Remove and Install

Group 0515: Engine Speed Control

Decelerator/Brake Pedal Remove and Install

Decelerator/Brake Pedal Disassemble and Assemble

Group 0530: External Exhaust Systems

Muffler Remove and Install

Group 0560: External Fuel Supply Systems

Fuel Tank Remove and Install

Auxiliary Water Separator Fuel Filter Remove and Install—If Equipped

Section 07: Dampener Drive

Group 0752: Elements

Dampener Drive Remove and Install

Section 11: Park Brake

Group 1100: Park Brake

Park Brake Remove and Install

Group 1115: Control Linkage

Park Lock Linkage Remove and Install

Park Lock Linkage Disassemble and Assemble

Group 1160: Hydraulic System

Park Brake Disassemble and Assemble

Section 15: Equipment Attaching

Group 1511: Drawbar

Extended Rigid Drawbar Remove and Install

Rigid Drawbar Remove and Install

Section 17: Frames, Chassis, or Supporting Structure

Group 1740: Frame Installation

Welding Repair of Major Structures

Group 1746: Frame Bottom Guards

Bottom Guards Remove and Install

Group 1749: Chassis Weights

Front Counterweight Remove and Install

Rear Counterweight Remove and Install

Additional Rear Counterweight Remove and Install (If Equipped)

Section 18: Operator’s Station

Group 1800: Removal and Installation

Cab/ROPS Remove and Install

Group 1810: Operator Enclosure

Remove and Install Window

Remove and Install Windowpanes

Hand Pump Bleed Procedure

Group 1821: Seat and Seat Belt

Disassemble and Assemble Seat

Group 1830: Heating and Air Conditioning

R134a Refrigerant Cautions

R134a Compressor Oil Charge Check

R134a Compressor Oil Removal

R134a Component Oil Charge

Leakage Testing

R134a Refrigerant Recovery, Recycling and Charging Station Installation Procedure

Recover R134a System

Evacuate R134a System

Charge R134a System

Air Conditioner System Cleaning Procedures

Purge R134a System

Flush R134a System

Evaporator or Heater Core Remove and Install

Expansion Valve Remove and Install

A/C Freeze Switch Remove and Install

Upper Cab Heater Blower Motor and Heater Blower Resistor Remove and Install

Cab Upper Heater Disassemble and Assemble

Cab or ROPS Under Seat Heater Disassemble and Assemble

Receiver-Dryer Remove and Install

Condenser Remove and Install

Compressor Remove and Install

Compressor Clutch Disassemble and Assemble

Clutch Hub Clearance Check

Compressor Manifold Inspect

Compressor Disassemble and Assemble

Section 19: Sheet Metal

Group 1910: Hood and Engine Enclosures

Hood Remove and Install

Engine Side Shields Remove and Install

Hood Support Remove and Install

Section 20: Safety, Convenience and Miscellaneous

Group 2004: Horn and Warning Devices

Remove and Install Reverse Alarm

Adjust Reverse Warning Alarm Volume

Section 32: Bulldozer

Group 3201: Blade

Cutting Edges and End Bits Remove and Install

Blade Remove and Install

Group 3240: Frames

Outside Dozer Push Beams Remove and Install

C-Frame Remove and Install

Group 3260: Hydraulic System

Hydraulic Pump Remove and Install

Hydraulic Pump Disassemble and Assemble

Hydraulic Pump Control Valve Disassemble and Assemble

Hydraulic Reservoir Remove and Install

Hydraulic Reservoir Cleanout Cover Remove and Install

Hydraulic Control Valve Remove and Install

Hydraulic Control Valve Disassemble and Assemble

Hydraulic Control Valve Disassemble and Assemble—IGC

Pilot Control Valve Remove and Install

Pilot Control Valve Disassemble and Assemble

Integrated Grade Control (IGC) Lever Remove and Install

Integrated Grade Control (IGC) Lever Disassemble and Assemble

Quick-Drop Valve Remove and Install

Power Angle Tilt (PAT) Cylinder Remove and Install

Angle Cylinder (PAT) Remove and Install

Hydraulic Cylinder Repair

Section 42: Ground Conditioning Tool

Group 4200: Ripper

Ripper Remove and Install—If Equipped

Section 9900: Dealer Fabricated Tools

Group 0999: Dealer Fabricated Tools

DF1041 Track Nut Removal Tool

DF1063 Final Drive Lift Bracket

DF1065 Final Drive and Pump Adapter Bracket

DFT1132 Hydrostatic Motor Removal and Installation Tool

DFT1137 Hydrostatic Motor Removal and Installation Tool

DFT1167 Final Drive Lifting Bracket Adapter Spacer

DFT1243 Lifting Bracket Extension

DFT1250 Lifting Bracket

DFT1260 Final Drive Lifting Fixture

DFT1261 Rolling Torque Measurement Tool

DFT1302 Final Drive Pressure Test Adapter

John Deere Crawler Dozer 850J with Engines 6068HT090 Repair Service Manual (TM12323)