John Deere 644B Loader Repair Technical Manual (TM1095 and TM3202)

Table of Contents:
10 – General Section 20 – Engine
30 – Electrical System
40 – Power Train
50 – Hydraulic System
60 – Miscellaneous Components
70 – System Testing
80 – Index
SECTION 10 – GENERAL
Group 00 – Specifications and Special Tools
Group 05 – Predelivery, Delivery and After-Sale Services
Group 10 – Lubrication
Group 15 – Engine Removal and Installation
SECTION 20 – ENGINE REPAIR
Group 00 – Specifications and Special Tools (JD 644B)
Group 05 – Cylinder Head, Valves and Camshaft (JD 644B)
Group 10 – Cylinder Block, Liners, Pistons and Rods
Group 15 – Crankshaft, Main Bearings and Flywheel
Group 20 – Lubrication System
Group 25 – Cooling System
Group 30 – Timing Gear Train
Group 40 – System Testing
SECTION 30 – FUEL AND AIR REPAIR
Group 00 – Specifications and Special Tools
Group 05 – Air Intake System
Group 10 – Diesel Fuel System
Group 15 – System Testing
SECTION 40 – ELECTRICAL REPAIR
Group 00 – Specifications and Special Tools
Group 05 – Batteries
Group 10 – Charging System
Group 15 – Delco Remy Starting System
Group 20 – John Deere Starting System
Group 25 ·- System Testing
SECTION 50 – POWER TRAIN REPAIR
Group 00 – Specifications and Special Tools
Group 05 – Drive Shafts
Group 10 – Damper Assembly
Group 15 · – Transmission
Group 20 – Differential
Group 25 – Final Drives
Group 30 – System Testing
SECTION 60 – STEERING/BRAKES REPAIR
Group 00 – Specifications and Special Tools
Group 05 – Three-Line Power Steering Valve
Group iO – Four: Line Power Steering Valve
Group 15 – Steering Cylinders
Group 20 – Steering and Brake Pump
Group 25 – Brake Valve
Group 30 – Accumulators
Group 35 – Service Brakes Active Elements
Group 40 – Mechanical Parking Brake
Group 45 – System Testing
SECTION 70 – HYDRAULICS REPAIR
Group 00 – Specifications and Special Tools
Group 05 – Hydraulic Pumps
Group 10 – Control Valves
Group 15 – Loader Cylinders
Group 20 – Miscellaneous Hydraulic Components
Group 25 – System Testing ( Flow Meter)
Group 26 – System Testing (Analyzer)
SECTION 80 – MISCELLANEOUS
Group 00 – Specifications and Special Tools
Group 05 – Loader and Engine Frames
Group 10 – Loader Boom and Buckets
Group 15 – Controls Linkage
SECTION 90 – OPERATOR STATION REPAIR
Group 00 – Specifications and Special Tools
Group 05 – Special Noise Control Items
Group 10 – Operator Enclosure
Group 15 – Steps and Handholds
This manual is for a technician and contains sections that are only for this Loader model. This manuals sections tells how to repair the components. Diagnostic sections help you identify the majority of routine failures quickly. Information is 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.