John Deere 644H 4WD Loader & 644H MH Material Handler TM1638 (Technical Service Repair Manual)

Workshop Service Repair Manual: John Deere 644H Loader & Material Handler (TM1638)

Equipment Identification:

Machine Models Covered: 
644H (4WD) Wheel Loader 
644H MH Material Handler

Engine Integration: John Deere PowerTech™ 6081H (8.1L) 6-Cylinder Electronic Turbocharged Diesel Engine

Powertrain System: Countershaft Powershift Transmission with manual/automatic shifting modes and heavy-duty inboard planetary axles.

Manual Volume: 544 Pages

Manual Details:

PDF File Size : 13.9 MB
Document Number: TM1638 
Format: PDF Digital Download
Manual Language: English
Supported Devices : PC, Mac, iOS, Android
Publication Date : 15JAN04
Delivery : Instant access after purchase
File Format : PDF — Downloadable

Product Description:

The TM1638 Technical Service Repair Manual is a comprehensive workshop guide for the John Deere 644H 4WD Loader and 644H MH Material Handler. This John Deere 644H 4WD Loader Service Manual PDF, John Deere 644H MH Material Handler Repair Manual, and TM1638 PDF Download provides detailed instructions for maintenance, diagnostics, troubleshooting, inspections, testing, and complete repair procedures to help keep your equipment operating at peak performance.

This John Deere 644H Technical Service Repair Manual covers engine systems, transmission, hydraulic systems, steering, brakes, axles, electrical systems, loader and material handler controls, wiring diagrams, technical specifications, and complete service procedures. Detailed illustrations and step-by-step repair instructions help technicians, mechanics, and equipment owners accurately diagnose faults, perform preventive maintenance, and complete professional repairs with confidence.

TM1638 - Manual Contents:

SECTION 00-General Information
Group 0001-Safety Information
SECTION 01-Wheels
Group 0110-Powered Wheels And Fasteners
SECTION 02-Axles And Suspension Systems 
Group 0200-Removal And Installation
Group 0225-Axle Shafts And U-Joints
Group 0250-Axle Shaft, Bearings, Reduction Gears
Group 0260-Hydraulic System
SECTION 03-Transmission
Group 0300-Removal And Installation
Group 0350-Gears, Shafts, Bearings And Power
Shift Clutch
Group 0360-Hydraulic System
Group 0399-Dealer Fabricated Tools
SECTION 04-Engine
Group 0400-Removal And Installation
SECTION 05-Engine Auxiliary Systems 
Group 0505-Cold Weather Starting Aids
Group 0510-Cooling System
Group 0515-Speed Controls
Group 0520-Intake System
Group 0530-External Exhaust System
Group 0560-External Fuel Supply Systems
SECTION 07-Dampener Drive
Group 0752-Elements
SECTION 09-Steering System 
Group 0960-Hydraulic System
SECTION 10-Service Brakes 
Group 1011-Active Elements 
Group 1060-Hydraulic System
SECTION 11-Park Brake
Group 1111-Active Elements
Group 1160-Hydraulic System
SECTION 17-Frame Or Supporting Structure
Group 1740-Frame Installation
Group 1746-Frame Bottom Guards
Group 1749-Chassis Weights
SECTION 18-Operator's Station
Group 1800-Removal And Installation
Group 1810-Operator Enclosure
Group 1830-Heating And Air Conditioning 
Group 1899-Dealer Fabricated Tools
SECTION 19-Sheet Metal And Styling 
Group 1910-Hood Or Engine Enclosure 
Group 1921-Grille And Grille Housing
SECTION 31-Loader
Group 3102-Bucket
Group 3140-Frames
Group 3160-Hydraulic System
Group 3199-Dealer Fabricated Tools

FAQ: 

Q1: What does the John Deere 644H 4WD Loader & 644H MH Material Handler TM1638 manual cover?
Ans: The TM1638 manual provides comprehensive technical service and repair procedures for the John Deere 644H 4WD Loader and 644H MH Material Handler. It is designed to assist with inspections, repairs, and complete workshop servicing.

Q2: What information is included in the TM1638 technical service repair manual?
Ans: The manual contains detailed repair procedures, component removal and installation instructions, technical specifications, adjustment methods, troubleshooting guides, inspection procedures, and maintenance information.

Q3: Does the TM1638 manual cover repairs for major machine systems?
Ans: Yes, it includes repair instructions for the engine, hydraulic system, transmission, electrical system, steering, braking system, axles, loader linkage, material handler components, and other essential machine assemblies.

Q4: Who should use the John Deere TM1638 manual?
Ans: This manual is intended for dealership technicians, heavy equipment mechanics, independent repair shops, fleet maintenance professionals, and equipment owners who require detailed workshop repair guidance.

Q5: Is the John Deere 644H 4WD Loader & 644H MH Material Handler TM1638 manual available as a printable PDF download?
Ans: Yes, the manual is provided as a downloadable PDF that can be searched electronically, viewed on a computer, tablet, or smartphone, and printed whenever a hard copy is needed for service or repair tasks.

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