John Deere 644K 4WD Loader Service Manual

Product Overview

This comprehensive service manual is essential for the John Deere 644K 4WD Loader, specifically engineered for models utilizing the 6090HDW13 (iT4) engine and featuring the serial number range 634315 – 658064. Available in PDF format and published under TM12105 and TM12107, this manual provides detailed repair and operational guidelines for maintaining your loader efficiently.

For more information on applicable loaders, please visit the Loader page.

Key Features

• Repair Service Manual: 476 pages of in-depth repair instructions.
• Operation and Test Service Manual: 1446 pages covering operational tests and diagnostics.

Benefits

• Comprehensive coverage ensures all aspects of repair and operation are addressed.
• Organized into detailed sections and groups for easy navigation and reference.
• Provides essential safety information and operational tips to prevent equipment damage or personal injury.

Usage Recommendations

• Carefully read through each section to understand the loader operation and servicing procedures.
• Utilize appropriate metric and inch fasteners and tools as specified in the manual.
• Regularly consult this manual to quickly diagnose routine failures and perform accurate repairs using the provided instructions and specifications.

Manual Contents

Repair Manual Sections Include:

• General Information: Safety and Torque Values
• Wheels: Powered Wheels and Fasteners
• Axles and Suspension: Removal, Installation, and System Details
• Transmission: Components and Hydraulic System
• Engine: Removal, Installation, and Auxiliary Systems
• Damper Drive, Steering System, Service Brakes, Park Brake
• Operatoru2019s Station: Seat, Belts, Heating, and Air Conditioning
• Loader Components: Bucket and Frames
• Dealer Fabricated Tools

Operation and Test Manual Sections Include:

• General Information: Safety and Diagnostic Codes
• Engine, Electrical, Power Train, Hydraulic System: Theory, Diagnostics, and Tests
• Heating and Air Conditioning: Operation and Diagnostics

This manual serves as an on-the-job guide, providing vital information needed for diagnosis, analysis, testing, and repair. It includes summaries of all tools, equipment, and parts required for various tasks, and elaborates on technical manuals for more general service information and maintenance guidelines.