John Deere 8850 4WD Articulated Tractors Repair Manual (TM1254)

Table of Contents:
   Introduction and Safety Information
   GENERAL
      Specification and Special Tools
      Predelivery, Delivery and After-Sale Services
      Tune-Up
      Lubrication
   SEPARATION
      Specifications and Special Tools
      Front Drive
      Fuel Tanks and Fenders
      Front End
      Front End and Engine From Clutch Housing
      Engine
      SOUND-GARD Body
      Front Hinge From Rear Hinge
      Front Hinge
      Clutch Housing
      Rear Hinge
      Torque Divider
      Transmission
      Final Drives
   ENGINE REPAIR
      Specifications and Special Tools
      Acquire Access to Cylinder Head, Valves and Camshaft
      Cylinder Head, Valves and Camshaft
      Acquire Access to Block, Liners, Pistons and Rods
      Cylinder Block, Liners, Pistons and Rods
      Acquire Access to Crankshaft, Main Bearings and Flywheel
      Crankshaft, Main Bearings and Flywheel
      Acquire Access to Lubrication System
      Lubrication System
      Acquire Access to Cooling System
      Cooling System
   FUEL AND AIR SYSTEM REPAIR
      Specifications and Special Tools
      Acquire Access to Air Intake System
      Air Intake System
      Acquire Access to Diesel Fuel System
      Diesel Fuel System
      Speed Control Linkage
   ELECTRICAL SYSTEM
      Specifications and Special Tools
      Harness Replacement
      Connector Repair
      John Deere Charging Circuit Repair
      Motorola Alternator Repair
      Starter Circuit Repair
      DELCO-REMY Starting Motor
      Lighting Circuits
      INVESTIGATOR II Warning System and Digital Tach. Repair
      Accessory Circuits
   POWER TRAIN REPAIR
      Specifications and Special Tools
      Remove/Install Clutch Oil Pressure Valve Housing
      Clutch Oil Pressure Regulating Valve Housing
      Clutch Operating Piston Housing
      PERMA CLUTCH
      QUAD-RANGE Planetary
      Independent PTO
      Torque Divider and Drive Shafts
      QUAD-RANGE Transmission
      Shift Lever Assembly
      Front Differential
      Rear Differential Housing
      Differential Lock Valves
      Final Drives
      Transmission Oil Filter Relief Valve Housing
      Transmission Oil Cooler and Thermal Relief Valve
   STEERING/BRAKES REPAIR
      Specifications and Special Tools
      Remove/Install Power Steering Components
      Steering Column
      Metering Pump
      Steering Valve
      Steering and Feedback Cylinders
      Remove/Install Brake Valve and Brake Accumulator
      Brake Valve
      Brake Accumulator
      Bleeding Brakes and Testing Brake Assembly
      Brake Pistons, Plates, and Disks
   HYDRAULIC REPAIR
      Specifications and Special Tools
      Charge Pump Assembly
      Remove/Install Main Hydraulic Pump
      Main Hydraulic Pump
      Remove/Install Charge Circuit Valves and Alternator
      Charge Pump Control Valve
      Hydraulic Filter Relief Valve Housing
      Remove/Install HYDRA-CUSHIONED Seat Valve Assembly and Accumulator
      Seat Valve Assembly
      Remove and Install Pressure Control Valve
      Pressure Control Valve
      Remove/Install Rockshaft Components
      Rockshaft Components
      Lift Assist Cylinders
      Draft Sensing Cylinders
      Hitch Components
      Remove/Install Selective Control Valves and Controls
      Selective Control Valve and Coupler
      Remote Cylinder
      Transmission-Hydraulic System Clean-Up Procedure
   MISCELLANEOUS REPAIR
      Specifications and Special Tools
      Wheels
      Hinge Pins
      Front Weight
   OPERATOR STATION REPAIR
      Specifications and Special Tools
      Air Conditioning System
      Air Conditioning System Service
      Heating System
      HYDRACUSHIONED Seat
      Miscellaneous Components
   MISCELLANEOUS OPTIONS
      Specifications and Special Tools
      Auxiliary Lighting