John Deere 644K 4WD Loader Repair Technical Manual PDF

On this website, you can read the Operation and Test Technical Manual in PDF format for repair and maintenance procedures of the John Deere 644K 4WD Loader model. This tutorial covers the necessary technical material, installation instructions, general information, safety information, transmission, engine, removal and installation, hydraulic system, troubleshoot, detailed pictures, diagrams, and schematics, operation section, etc.

Please, read and follow each page in this tutorial to avoid technical breakdowns, damage, and heavy injuries. Online text comes in PDF format with 446 pages for reading. So, it doesn't require any installation (Instant Download). We recommend you to use the application Adobe Acrobat Reader for working with PDF instructions. If you have any questions about this equipment, write to us and we will answer all your questions.

Models:
644K 4WD Loader
Engine 6068HDW80 (T3),
6068HDW83 (S2)

Contents

Section 00—General Information
Group 0001—Safety Information
Group 0003—Torque Values
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
Section 04—Engine
Group 0400—Removal and Installation
Section 05—Engine Auxiliary Systems
Group 0505—Cold Weather Starting Aids
Group 0510—Cooling System
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 1821—Seat and Seat Belt
Group 1830—Heating and Air Conditioning
Section 19—Sheet Metal and Styling
Group 1910—Hood or Engine Enclosure
Section 31—Loader
Group 3102—Bucket
Group 3140—Frames
Group 3160—Hydraulic System
Section 99—Dealer Fabricated Tools
Group 9900—Dealer Fabricated Tools