John Deere 644K 4WD Loader Operation and Test Technical Manual PDF

This Operation and Test Technical Manual contains detailed repair and maintenance information, safety rules, special recommendations, troubleshooting, and any additional material with descriptions for John Deere 644K 4WD Loader model. Factory file covers sections about operation, engine information, detailed technical data, hydraulic system, maintenance instructions, removal and installation instructions, diagnostic information, safety, many diagrams, different illustrations, and schemes.

Please, read this factory file especially the rules, notes, and other advise and recommendations to avoid any breakdowns, injuries, or damage. Online text comes in PDF format with 1332 pages in the English language. For high-quality transmission of all data, as well as for the correct display of charts and diagrams, we recommend installing Adobe Reader PDF. Please check with us if you have questions or need our help. Our managers will answer all your questions.

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

Contents

Section 9000—General Information
Group 01—Safety Information
Section 9001—Diagnostic Trouble Codes
(DTC)
Group 10—Engine Control Unit (ECU) Diagnostic
Trouble Codes
Group 20—Transmission Control Unit (TCU) Diagnostic
Trouble Codes
Group 30—Flex Load Controller (FLC) Diagnostic
Trouble Codes
Group 40—Sealed Switch Module (SSM) Diagnostic
Trouble Codes
Group 50—Advanced Display Unit (ADU) Diagnostic
Trouble Codes
Group 60—Radar Object Detection (ROD) Diagnostic
Trouble Codes
Group 70—Ground Speed Radar (RDR) Diagnostic
Trouble Codes
Group 80—Joystick Steering Valve (JSV) Diagnostic
Trouble Codes
Group 90—Joystick Steering Controller (JSC)
Diagnostic Trouble Codes
Group 100—Tire Pressure Monitoring (TPM) System
Diagnostic Trouble Codes
Section 9005—Operational Checkout
Procedure
Group 10—Operational Checkout Procedure
Section 9010—Engine
Group 05—Theory Of Operation
Group 15—Diagnostic Information
Group 25—Tests
Section 9015—Electrical System
Group 05—System Information
Group 10—System Diagrams
Group 15—Sub-System Diagnostics
Group 16—Monitor Operation
Group 20—References
Section 9020—Power Train
Group 05—Theory of Operation
Group 15—Diagnostic Information
Group 20—Adjustments
Group 25—Tests
Section 9025—Hydraulic System
Group 05—Theory Of Operation
Group 15—Diagnostic Information
Group 20—Adjustments
Group 25—Test
Section 9031—Heating and Air Conditioning
Group 05—Theory of Operation
Group 15—Diagnostic Information
Group 25—Tests