John Deere 644 and 644A Wheel Loaders Technical Manual (TM1011)

Table of Contents:
   Introduction
   General Information
      Specifications
      Predelivery, Delivery, and After-Sales Service
      Tune-Up and Adjustment
      Lubrication
      Loader Separation
   Engine
      Diagnosis
      Basic Engine
      Engine Lubrication
      Speed Control Linkage
      Engine Cooling
      Specifications and Special Tools
   Fuel System
      System Diagnosis
      Tank, Filters, and Transfer Pump
      Air Intake System
      Fuel Injection Pump Model CB
      Model JDB
      Roosa Master Injection Nozzles
   Electrical System
      Wiring Diagrams
      Charging System
      Starting Circuit
      Gauges and Switches
   Power Train
      System Diagnosis
      Damper Assembly and Drive Shafts
      Transmission Assembly
      Disconnect Output Shaft
      Axle Assemblies
      Differentials
   Power Steering and Brake Systems
      General Information, Testing, and Diagnosis
      Hydraulic Pump
      Filters, Oil Cooler, and Accumulators
      Steering System
      Brake System
   Hydraulic System (Loader Functions)
      General Information, Testing , and Diagnosis
      Reservoir and Filters
      Hydraulic Pump
      Control Valve
      Return-To-Dig Valve
      Backhoe Control Valve
      Cylinders
      Backhoe Swing Cylinder
   Miscellaneous Components
      Frames
      Buckets
      Drott 4-In-1 Buckets
      Backhoe
      Specifications and Special Tools
   Index