John Deere 640D Skidders and 648D Grapple Skidders Repair Manual (tm1440)
- Data Base Reference
- Models Covered: John Deere 640D (Cable Skidder) & 648D (Grapple Skidder)
- Equipment Niche: Forestry Logging Equipment / Heavy Equipment Skidders
- Official Publication Code: TM1440 (Repair Technical Manual Suffix)
- Document Typology: Structural Workshop Service Repair Manual.
Section Summary
| Category | Covered Topics |
|---|---|
| General | Safety, specifications, torque, fluids, inspections |
| Wheels | Powered wheels and fastenings |
| Axles | Differential, shafts, bearings, reduction gears, hydraulics |
| Transmission | Removal, controls, gears, clutches, hydraulics |
| Engine | Removal, installation, auxiliary systems |
| Clutch | Linkage, elements |
| Steering | Secondary steering, hydraulics |
| Service Brakes | Elements, hydraulics |
| Park Brake | Elements, linkage, hydraulics |
| Electrical | Batteries, alternator, lighting, wiring, instruments |
| Frame | Installation, bottom guards |
| Operator Station | Enclosure, seat, HVAC |
| Sheet Metal | Hood, grille |
| Safety/Convenience | Horn, warning devices |
| Hydraulic | Main hydraulic system |
| Winch | Removal, linkage, drive, hydraulics |
| Bulldozer | Blades, linkage, hydraulics |
| Arch/Boom | Frames |
| Grapple | Mechanism, linkage, frames, hydraulics |
| Winch Drive | Input shaft |
| Tools | Dealer-fabricated tools |
John Deere 640D Skidder Service Manual | TM1440 Repair
Table of Contents – Service Manual
General Information
- Safety Information
- General Specifications
- Torque Values
- Fuels and Lubricants
- Inspection Procedures
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
- Clutch 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
Special Service Tools and Fabrication
