John Deere 850J Dozer With Engine 6090HT001 Crawler Dozer Technical Service Manual TM1731

850J Crawler Dozer (SN. from 130886) Repair

REPAIR TECHNICAL MANUAL Crawler Dozer models 850J with Engines 6090HT001 (SN. 130886- ) TM1731 01 DEC 15 (ENGLISH)

For complete service information also see: 850J Crawler Dozer Diagnostic

TM1730

JDLink (MTG) Technical Manual

TM114519

PowerTech 8.1 L Diesel Engines Base Engine

CTM86

Alternators and Starting Motors

CTM77

PowerTech 9.0L OEM Diesel Engines 6090 Tier 3 / Stage IIIA Emissions Certified Base Engine Repair

CTM400

PowerTech 6090 Diesel Engine Level 14 ElectronicFuel System with the Denso High Pressure Common Rail (HPCR) Level 14 ECU

CTM385

PowerTech 4.5L & 6.8L Diesel Engines Level 12 Electronic Fuel System With Stanadyne DE10 Pump

CTM331

PowerTech 8.1L Diesel Engines Level 9 Electronic Fuel System With Denso High Pressure Common Rail

CTM255

120 Series Hydraulic Cylinders

CTM120519

120 Series Hydraulic Cylinders

CTM114319

125 Series Hydraulic Cylinders

CTM109319

PowerTech 4.5L & 6.8L Diesel Engines Tier 1/Stage I, Tier 2/Stage II, Tier 3/Stage CTM104 IIIA, Tier 3/Stage IIA Tier 3/Stage III, (Base Engine)

John Deere Construction and Forestry Pinted by Belgreen

TM1731-REPAIR TECHNICAL MANUAL

(g) by Belgreen v2.5

Table of contents FOREWORD TECHNICAL INFORMATION FEEDBACK FORM Section 00 - GENERAL INFORMATION Group 01 - Safety Group 03 - Torque Values Section 01 - TRACKS Group 0130 - Track System Section 02 - AXLES AND SUSPENSION SYSTEMS Group 0201 - Drive Axle Housing and Support Group 0250 - Axle Shaft, Bearings and Reduction Gears Section 03 - TRANSMISSION Group 0300 - Remove and Install Group 0315 - Control Linkage Group 0360 - Hydrostatic System Section 04 - ENGINE Group 0400 - Removal and Installation Section 05 - ENGINE AUXILIARY SYSTEMS Group 0505 - Cold Weather Starting Aid Group 0510 - Cooling System Group 0515 - Engine Speed Control Group 0530 - External Exhaust Systems Group 0560 - External Fuel Supply Systems Section 07 - DAMPENER DRIVE Group 0752 - Elements Section 11 - PARK BRAKE Group 1100 - Park Brake Group 1115 - Control Linkage Group 1160 - Hydraulic System Section 15 - EQUIPMENT ATTACHING Group 1511 - Drawbar Section 17 - FRAMES, CHASSIS, OR SUPPORTING STRUCTURE Group 1740 - Frame Installation Group 1746 - Frame Bottom Guards Group 1749 - Chassis Weights Section 18 - OPERATOR’S STATION Group 1800 - Removal and Installation Group 1810 - Operator Enclosure Group 1821 - Seat and Seat Belt Group 1830 - Heating and Air Conditioning Section 19 - SHEET METAL Group 1910 - Hood and Engine Enclosures Section 20 - SAFETY, CONVENIENCE AND MISCELLANEOUS Group 2004 - Horn and Warning Devices Section 32 - BULLDOZER Group 3201 - Blade Group 3240 - Frames Group 3260 - Hydraulic System Section 42 - GROUND CONDITIONING TOOL Section 9900 - DEALER FABRICATED TOOLS Group 0999 - Dealer Fabricated Tools

<- Go to Global Table of contents

TM1731-REPAIR TECHNICAL MANUAL

<- Go to Global Table of contents

TM1731-REPAIR TECHNICAL MANUAL

TM1731-REPAIR TECHNICAL MANUAL

(g) by Belgreen v2.5

Foreword This manual is written for an experienced technician. Essential tools required in performing certain service work are identified in this manual and are recommended for use.

Live with safety: Read the safety messages in the introduction of this manual and the cautions presented throughout the text of the manual.

CAUTION: This is the safety-alert symbol. When you see this symbol on the machine or in this manual, be alert to the potential for personal injury.

Technical manuals are divided in two parts: repair and operation and tests. Repair sections tell how to repair the components.

Operation and tests sections help you identify the majority of routine problems quickly.

Information is organized in groups for the various components requiring service instruction. At the beginning of each group are summary listings of all applicable essential tools, service equipment and tools, other materials needed to do the job, service parts kits, specifications, wear tolerances, and torque values.

Technical Manuals are concise guides for specific machines. They are on-the-job guides containing only the vital information needed for diagnosis, analysis, testing, and repair.

Fundamental service information is available from other sources covering basic theory of operation, fundamentals of troubleshooting, general maintenance, and basic type of problems and their causes.

<- Go to Global Table of contents

TM1731-REPAIR TECHNICAL MANUAL

GENERAL INFORMATION

(g) by Belgreen v2.0

Technical Information Feedback Form We need your help to continually improve our technical publications. Please copy this page and FAX or mail your comments, ideas and improvements.

Technical Manual Fax SEND TO:

John Deere Dubuque Works 18600 South John Deere Road Attn: Publications, Dept. 324 Dubuque, IA 52004-0538 USA

FAX NUMBER:

1-563-589-5800 (USA)

Publication Number:

Page Number:

Ideas, Comments:

Name:

Phone:

Email Address:

THANK YOU!

<- Go to Section TOC

Section 00 page 1

TM1731-REPAIR TECHNICAL MANUAL

TM1731-REPAIR TECHNICAL MANUAL

(g) by Belgreen v2.5

Section 00 - GENERAL INFORMATION Table of contents Group 01 - Safety ..................................................................................................................................... 1 Recognize Safety Information ............................................................................................................... 1 Follow Safety Instructions ..................................................................................................................... 1 Operate Only If Qualified ...................................................................................................................... 1 Wear Protective Equipment .................................................................................................................. 3 Avoid Unauthorized Machine Modifications .......................................................................................... 3 Inspect Machine ................................................................................................................................... 3 Stay Clear of Moving Parts ................................................................................................................... 4 Avoid High-Pressure Fluids ................................................................................................................... 4 Beware of Exhaust Fumes .................................................................................................................... 5 Prevent Fires ........................................................................................................................................ 5 Prevent Battery Explosions ................................................................................................................... 6 Handle Chemical Products Safely ......................................................................................................... 6 Dispose of Waste Properly .................................................................................................................... 6 Prepare for Emergencies ...................................................................................................................... 7 Add Cab Guarding For Special Uses ..................................................................................................... 7 Use Steps and Handholds Correctly ..................................................................................................... 8 Start Only From Operator′s Seat ........................................................................................................... 8 Use and Maintain Seat Belt .................................................................................................................. 8 Prevent Unintended Machine Movement .............................................................................................. 9 Avoid Work Site Hazards ...................................................................................................................... 9 Keep Riders Off Machine .................................................................................................................... 10 Avoid Backover Accidents .................................................................................................................. 10 Avoid Machine Tip Over ...................................................................................................................... 11 Add and Operate Attachments Safely ................................................................................................ 12 Park And Prepare For Service Safely .................................................................................................. 12 Service Cooling System Safely ........................................................................................................... 13 Remove Paint Before Welding or Heating ........................................................................................... 13 Make Welding Repairs Safely ............................................................................................................. 13 Drive Metal Pins Safely ....................................................................................................................... 14 Group 03 - Torque Values ..................................................................................................................... 15 Metric Bolt and Cap Screw Torque Values .......................................................................................... 15 Additional Metric Cap Screw Torque Values ....................................................................................... 16 Unified Inch Bolt and Cap Screw Torque Values ................................................................................. 18 Service Recommendations for 37° Flare and 30° Cone Seat Connectors ........................................... 19 Service Recommendations for O-Ring Boss Fittings ........................................................................... 20 O-Ring Boss Fittings In Aluminum Housing Service Recommendations—Excavators ......................... 22 Service Recommendations For Flared Connections—Straight or Tapered Threads ............................ 24 Service Recommendations For Flat Face O-Ring Seal Fittings ............................................................ 26 O-Ring Face Seal Fittings With SAE Inch Hex Nut And Stud End For High Pressure Service Recommendations ....................................................................................................................... 27 O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For Standard Pressure Service Recommendations ....................................................................................................................... 29 O-Ring Face Seal Fittings With Metric Hex Nut And Stud End For High Pressure Service Recommendations ....................................................................................................................... 31 Service Recommendations for Metric Series Four Bolt Flange Fitting ................................................. 33 Service Recommendations For Inch Series Four Bolt Flange Fittings ................................................. 34 Inch Series Four Bolt Flange Fitting For High Pressure Service Recommendations ............................ 35 Service Recommendations For Non-Restricted Banjo (Adjustable) Fittings ........................................ 36 Service Recommendations For O-Ring Boss Fittings With Shoulder ................................................... 38 <- Go to Global Table of contents

TM1731-REPAIR TECHNICAL MANUAL

TM1731-REPAIR TECHNICAL MANUAL

(g) by Belgreen v2.5

Metric 24° O-Ring Seal DIN 20078 Service Recommendations ........................................................... 41

<- Go to Global Table of contents

TM1731-REPAIR TECHNICAL MANUAL

Section 00 - GENERAL INFORMATION

Group 01: Safety

Group 01 - Safety Recognize Safety Information

Safety alert Symbols

Safety Alert Symbols This is the safety alert symbol. When you see this symbol on your machine or in this manual, be alert for the potential of personal injury.

Follow the precautions and safe operating practices highlighted by this symbol.

A signal word — DANGER, WARNING, or CAUTION — is used with the safety alert symbol. DANGER identifies the most serious hazards.

On your machine, DANGER signs are red in color, WARNING signs are orange, and CAUTION signs are yellow. DANGER and WARNING signs are located near specific hazards. General precautions are on CAUTION labels.

Follow Safety Instructions

Follow Safety Instructions Read the safety messages in this manual and on the machine. Follow these warnings and instructions carefully. Review them frequently. Keep safety signs in good condition. Replace missing or damaged safety signs. Be sure new equipment components and repair parts include the current safety signs. Replacement safety signs are available from your John Deere dealer.

Be sure all operators of this machine understand every safety message. Replace operator′s manual and safety labels immediately if missing or damaged.

<- Go to Section TOC

Section 00 page 1

TM1731-REPAIR TECHNICAL MANUAL

Section 00 - GENERAL INFORMATION

Group 01: Safety

Operate Only If Qualified Do not operate this machine unless the operator′s manual has been read carefully, and you have been qualified by supervised training and instruction.

Operator should be familiar with the job site and surroundings before operating. Try all controls and machine functions with the machine in an open area before starting to work.

Know and observe all safety rules that may apply to every work situation and work site.

<- Go to Section TOC

Section 00 page 2

TM1731-REPAIR TECHNICAL MANUAL

Section 00 - GENERAL INFORMATION

Group 01: Safety

Wear Protective Equipment

Protective Equipment Guard against injury from flying pieces of metal or debris; wear goggles or safety glasses.

Wear close fitting clothing and safety equipment appropriate to the job.

Prolonged exposure to loud noise can cause impairment or loss of hearing. Wear suitable hearing protection such as earmuffs or earplugs to protect against objectionable or uncomfortable loud noises.

Avoid Unauthorized Machine Modifications Modifications of this machine, or addition of unapproved products or attachments, may affect machine stability or reliability, and may create a hazard for the operator or others near the machine. The installer of any modification which may affect the electronic controls of this machine is responsible for establishing that the modification does not adversely affect the machine or its performance.

Always contact an authorized dealer before making machine modifications that change the intended use, weight or balance of the machine, or that alter machine controls, performance or reliability.

Inspect Machine

<- Go to Section TOC

Section 00 page 3

TM1731-REPAIR TECHNICAL MANUAL