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.