John Deere 850K Crawler Dozer Repair Technical Manual TM12046 PDF

For complete service information also see:
850K Crawler Dozer Operation and Test ……….. TM12043
850K Crawler Dozer Operator’s Manual ………… OMT284161
6068 PowerTech™ OEM Diesel Engines
Above 130kW (174 hp)
(Interim Tier 4/Stage III B platform)……………….. CTM104719
100, 120, 125, 185, 225 Series Hydraulic
Cylinders …………………………………………………….. CTM120519
JDLink™ (MTG) Technical Manual………………… TM114519
Undercarriage Appraisal Manual ………………….. SP326VOL1
Specifications Manual………………………………….. SP458VOL2

Contents
General Information
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
Avoid High-Pressure Oils
Work In Ventilated Area
Prevent Fires
Prevent Battery Explosions
Handle Chemical Products Safely
Decommissioning — Proper Recycling and Disposal of Fluids and Components
Exhaust Filter Ash Handling and Disposal
Prepare for Emergencies
Add Cab Guarding For Special Uses
Clean Debris from Machine
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 and Machine Damage
Operating or Traveling On Public Roads
Inspect and Maintain ROPS
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
Clean Exhaust Filter Safely
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
Tracks
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
Crossbar Remove and Install
Crossbar Bushings and Seals Remove and Install
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 and 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
Axles and Suspension Systems
Drive Axle Housing and Support
Final Drive Remove and Install
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
Transmission
Remove and Install
Hydrostatic Pump and Motor Initial Start-Up Procedure
Hydrostatic Pump Remove and Install
Hydrostatic Motor Remove and Install
Control Linkage
Transmission Control Lever (TCL) Remove and Install
Transmission Control Lever (TCL) Disassemble and Assemble
Decelerator/Brake Pedal Remove and Install
Decelerator/Brake Pedal Disassemble and Assemble
Input Drive Shafts and U-Joints
Damper Drive Remove and Install
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
Hydrostatic Cold Start Valve Remove and Install
Engine
Removal and Installation
John Deere Engine
Engine Remove and Install
Engine Mounts Remove and Install
Belt Routing
Engine Auxiliary Systems
Cold Weather Starting Aid
Engine Coolant Heater Remove and Install
Cooling System
Cooling Package Plenum Remove and Install
Cooling Package Remove and Install
Charge Air Cooler Remove and Install
Radiator Remove and Install
Hydraulic Oil Cooler Remove and Install
Hydrostatic Oil Cooler Remove and Install
Fuel Cooler Remove and Install
Intake System
Air Cleaner Remove and Install
Precleaner Remove and Install—If Equipped
StrataStrata is a trademark of Donaldson Company Inc.® Cap Precleaner Remove and Install—If Equipped
Large Debris Precleaner Remove and Install—If Equipped
External Exhaust Systems
Exhaust Tube Remove and Install
JDG11335 Bellows Alignment Fixture
Exhaust Bellows Alignment Procedure
Diesel Particulate Filter (DPF) Remove and Install
Exhaust Filter Remove and Install
Service Filter Cleaning
External Fuel Supply Systems
Fuel Tank Remove and Install
Primary Fuel Filter and Water Separator Remove and Install
Secondary Fuel Filter Remove and Install
Auxiliary Fuel Filter and Water Separator Remove and Install—If Equipped
Fast Fill Fuel System Disassemble and Assemble
Park Brake
Park Brake
Park Brake Remove and Install
Control Linkage
Park Lock Linkage Remove and Install
Park Lock Linkage Disassemble and Assemble
Hydraulic System
Park Brake Disassemble and Assemble
Equipment Attaching
Drawbar
Extended Rigid Drawbar Remove and Install
Rigid Drawbar Remove and Install
Frames, Chassis, or Supporting Structure
Frame Installation
Welding Repair of Major Structures
Frame Bottom Guards
Bottom Guards Remove and Install
Chassis Weights
Front Counterweight Remove and Install
Rear Counterweight Remove and Install
Additional Rear Counterweight Remove and Install (If Equipped)
Operator’s Station
Removal and Installation
Cab/ROPS Remove and Install
Operator Enclosure
Slide Glass Remove and Install
Stationary Glass Remove and Install
Windowpanes Remove and Install
Window Wiper Motor Remove and Install
Window Washer Pumps Remove and Install
Hand Pump Bleed Procedure
Seat and Seat Belt
Seat Remove and Install
Seat Belt Remove and Install
Heating and Air Conditioning
R134a Refrigerant Cautions and Proper Handling
R134a Refrigerant Cautions
R134a Compressor Oil Removal
R134a Component Oil Charge
Refrigerant Leakage Testing
Refrigerant Hoses and Tubing Inspection
R134a Refrigerant Recovery, Recycling and Charging Station Installation Procedure
Recover R134a System
Evacuate R134a System
Charge R134a System
Air Conditioner System Cleaning Procedures
Flush and Purge Air Conditioner System
Evaporator or Heater Core Remove and Install
Expansion Valve Remove and Install
Cab Heater Blower Motor and Heater Blower Resistor Remove and Install
Cab 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
Sheet Metal
Hood and Engine Enclosures
Hood Remove and Install
Engine Side Shields Remove and Install
Rear Hood Support Remove and Install
Front Hood Support Remove and Install
Grille and Grille Housing
Grille Remove and Install
Safety, Convenience and Miscellaneous
Horn and Warning Devices
Remove and Install Reverse Alarm
Adjust Reverse Warning Alarm Volume
Main Hydraulic System
Hydraulic System
General Oil Cleanup Procedure
Hydraulic Component Failure Cleanup Procedure
Hydraulic Pump Remove and Install
Hydraulic Pump Disassemble and Assemble
Hydraulic Pump Control Valve Disassemble and Assemble
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
Hydraulic Reservoir Remove and Install
Hydraulic Reservoir Cleanout Cover Remove and Install
Hydraulic Oil Cooler Bypass Valve Remove and Install
Bulldozer
Blade
Cutting Edges and End Bits Remove and Install
Blade Remove and Install
Blade Remove and Install—Mechanical Angle Blade
Frames
Outside Dozer Push Beams Remove and Install
C-Frame Remove and Install
Pushbeams Remove and Install—Mechanical Angle Blade
Hydraulic System
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
Ground Conditioning Tool
Ripper
Ripper Remove and Install—If Equipped
Blades, Teeth, and Shanks
Shank and Tooth Remove and Install
Hydraulic System
Auxiliary Joystick Remove and Install—IGC
Auxiliary Pilot Control Valve Remove and Install
Ripper Cylinder Remove and Install
Dealer Fabricated Tools
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