DOWNLOAD PDF DIAGNOSTIC AND REPAIR TECHNICAL MANUAL FOR JOHN DEERE 640D AND 648D SKIDDER WITH PUBLICATION NUMBER - TM1440

This comprehensive technical manual covers diagnostic procedures and repair specifications for John Deere 640D and 648D skidders. Document TM1440 provides detailed guidance on troubleshooting hydraulic systems, engine components, transmission assemblies, and electrical circuits. Includes step-by-step service instructions, torque specifications, and component replacement procedures. Essential reference for technicians, operators, and maintenance professionals requiring in-depth knowledge of these heavy-duty forestry machines. Instant PDF download for immediate access to critical service information.

CONTENT:
I-GENERAL INFORMATION
I -Safety Information
II -General Specifications
III -Torque Values
IV -Fuels and Lubricants
V -Inspection Procedure
WHEELS
Powered Wheels and Fastenings
AXLES AND SUSPENSION SYSTEM
 Removal and Installation
Differential Or Bevel Drive
Input Drive Shafts And U-Joints
Axle Shaft, Bearings, And Reduction Gears
Hydraulic System
TRANSMISSION
Removal and Installation
Controls Linkage
Gears, Shafts, Bearings And Power Shift Clutch
Hydraulic System
ENGINE
Removal and Installation
ENGINE AUXILIARY SYSTEMS
Cold Weather Starting Aids
Cooling Systems
Speed Controls
Intake System
External Exhaust System
External Fuel Supply System
CLUTCH
Controls Linkage
Elements
STEERING SYSTEM
Secondary Steering
Hydraulic System
SERVICE BRAKES
Active Elements
Hydraulic System
PARK BRAKE
Active Elements
Controls Linkage
Hydraulic System
ELECTRICAL SYSTEM
Batteries, Supports and Cables
Alternator, Regulator and Charging System Wiring
Lighting System
Wiring Harness and Switches
Instruments and Indicators
FRAME, CHASSIS OR SUPPORT STRUCTURE
Frame Installation
Frame Bottom Guards
OPERATOR'S STATION
Removal and Installation
Operator Enclosure
Seat and Seat Belt
Heating and Air Conditioning
SHEET METAL AND STYLING
Hood or Engine Enclosure
Grille and Grille Housing
SAFETY, CONVENIENCE AND MISCELLANEOUS
Horn and Warning Devices
MAIN HYDRAULIC SYSTEM
Hydraulic System
WINCH
Removal and Installation
Controls Linkage
Drive and Clutch
Hydraulic System
BULLDOZERS (STACKING AND TRAILBUILDING BLADES)
Blades
Controls Linkage
Hydraulic System
ARCH OR BOOM
Frames
GRAPPLE
Grapple Mechanism
Controls Linkage
Frames
Hydraulic System
WINCH DRIVE
Input Drive Shaft
DEALER FABRICATED TOOLS
Dealer Fabricated Tools

TOTAL PAGES - 969
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