John Deere 640 Skidders Grapple Skidders Technical Manual TM1124
This manual contains high quality images, instructions to help you to troubleshoot, and repair your truck. This document is printable, without restrictions, contains searchable text, bookmarks, crosslinks for easy navigation.
- Manual Included:
- Repair Technical Manual: 987 Pages
- Specifications:
- Brand: John Deere
- Model: 660D
- Serial Number:
WC848GX001029 and after
WC660DG001259 and after
WC660DC001259 and after - Type: Skidder
- Manuals: Repair Technical Manual
- Publication Numbers: TM1124
- Language: English
- Format: PDF

Table of Contents: John Deere 640 Skidders Grapple Skidders Technical Manual (TM1124)
Introduction and Safety Information
General Information
- Torque Values
- General Specifications
- Pre‑Delivery, Delivery, and After‑Sales Services
- Lubrication Guidelines
Wheels
- Powered Wheels and Fasteners
- Weights
- Specifications and Special Tools
Axles and Suspension Systems
- Drive Axle Housing and Support
- Differential or Bevel Drive
- Input Drive Shafts and U‑Joints
- Axle Shafts, Bearings, and Reduction Gears
- Specifications and Special Tools
Transmission
- Control Systems
- Housings and Covers
- Gears, Shafts, Bearings, and Power Shift Clutch
- Hydraulic System
- Clutch Disconnect and Controls
- Specifications and Special Tools
Engine
- Removal and Installation
- Crankshaft and Main Bearings
- Camshaft and Valve Train Components
- Connecting Rods and Pistons
- Cylinder Block
- Lubrication System
- Crankcase Ventilation System
- Cylinder Head and Valves
- Exhaust Manifold
- Fuel Injection System
- Turbocharger
- Water Pump
- Thermostats, Housing, and Piping
- Oil Cooler
- Fuel Filter
- Fuel Transfer Pump
- Starter Motor and Mountings
- Flywheel, Housing, and Fasteners
- Specifications and Special Tools
Engine Auxiliary Systems
- Cold Weather Starting Aids
- Cooling Systems
- Speed Controls
- Intake Systems
- External Exhaust Systems
- Mounting Frame
- External Fuel Supply System
- Specifications and Special Tools
Steering System
- Hydraulic System
- Specifications and Special Tools
Service Brakes
- Active Components
- Control Linkage
- Hydraulic System
- Specifications and Special Tools
Parking and Emergency Brakes
- Active Components
- Control Linkage
- Specifications and Special Tools
Electrical Systems
- Batteries, Supports, and Cables
- Alternator, Regulator, and Charging System Wiring
- Lighting System
- Wiring Harness and Switches
- System Controls (Grapple Skidder Only)
- Instruments and Indicators
- Specifications and Special Tools
Frame, Chassis, or Supporting Structure
- Frame Installation
- Bottom Guards
- Specifications and Special Tools
Operator’s Station
- Operator Enclosure
- Seat and Seat Belt
- Heating and Air Conditioning
- Specifications and Special Tools
Sheet Metal and Styling
- Hood or Engine Enclosure
- Miscellaneous Shields
- Grille and Grille Housing
Safety, Convenience, and Miscellaneous Features
- Fire Extinguisher
- Horn
- Cigar Lighter
- Specifications and Special Tools
Hydraulic System
- Hydraulic System Overview
- Specifications and Special Tools
Winch (11‑Inch Drum)
- Control Linkage
- Housing and Mounting Structure
- Drive and Clutches
- Hydraulic System
- Specifications and Special Tools
Winch (Early Units – 8‑Inch Drum)
- Housing and Mounting Structure
- Drive and Clutches
- Hydraulic System
- Specifications and Special Tools
Winch (Later Units – 8‑Inch Drum)
- Removal and Installation
- Drive and Clutches
- Hydraulic System
Bulldozer Attachment
- Blades
- Control Linkage
- Hydraulic System
- Specifications and Special Tools
Arch or Boom
- Frames
- Specifications and Special Tools
Grapple Attachment
- Grapple Mechanism
- Grapple Mechanism – Single Function
- Frames
- Hydraulic System
- Hydraulic System – Single Function
- Specifications and Special Tools
PTO or Winch Drive
- Input Drive Shaft
- Specifications and Special Tools
System Testing
- Operational Checkout Procedure
- Engine Testing
- Electrical System Testing
- Powertrain Testing
- Hydraulic System Testing
- Hydraulic System Analyzer
- Miscellaneous Component Testing
- Specifications and Special Tools
Index




