John Deere 644-B Loader Technical Manual TM1095

TM1095 is the 1978 factory technical manual for the JD644-B wheel loader. If you're keeping one of these loaders working, it gives you the original specs and procedures.

Fits

John Deere 644-B (JD644-B) wheel loader. TM1095, 01AUG78.

What this manual covers

It covers general information and safety, then engine removal, disassembly and repair, the power train (transmission and driveline), hydraulics (pumps, valves, cylinders and the loader lift and tilt circuits), electrical wiring and components, and articulated steering service and repair. Removal, inspection, repair and reassembly steps are given with specifications, wear limits and torque values. The hydraulics chapter covers the loader lift and tilt circuits in detail, including the pumps, valves and cylinders that do the work, so you can track down a slow or drifting bucket or a weak lift. The articulated steering section covers the center pivot and steering components that take a beating on older loaders. Every repair procedure lists the torque values and wear limits you need, so you can measure worn parts against the factory figures and decide what needs replacing before reassembly. A 1978 manual describes the machine as it was built, which is useful when earlier owners have made changes.

Who this manual is for

Owners, quarries, farms and municipal shops still running a 644-B, and mechanics doing hydraulic, transmission or engine work on one.

Table of contents

• Introduction - General information, safety
• Engine - Removal, disassembly, repair procedures
• Power Train - Transmission and driveline repair
• Hydraulics - Pumps, valves, cylinders, loader lift/tilt circuits
• Electrical - Wiring and component service
• Steering - Articulated steering service and repair

Check before you buy

644-B only; other 644 models use different manuals. If your loader has had its engine or hydraulic components swapped over the years, compare part numbers against the manual before relying on the specs.

PDF, English. You get the download link right after checkout. Sold by an independent seller, not affiliated with or endorsed by John Deere.