Timberjack 660D and John Deere 848G Skidder Repair Manual PDF
Timberjack 660D and John Deere 848G Grapple Skidders Technical Manual (TMF435521)
Table of Contents
- Introduction
- General Information
- How To Use This Book
- Chapters and Sections Contents
- Foreword and Warranty
- Safety Information
- General – Component Locators
- Towing/Transporting the Skidder
- Repairs
- Engine Systems
- Engine
- Engine Mounting
- Fuel System
- Cooling System
- Coupling
- Air Intake System
- Exhaust System
- Engine
- Description and Operation
- Engine Specifications
- Engine Operation
- Engine Break-in Period
- Engine Oil
- Inspecting Alternator Belt
- Checking and Replacing Hub Vibrational Damper
- Checking Engine Valve Lash Clearance
- Replacing Starting Aid Can
- Engine Tune-up
- Preliminary Engine Testing Before Tune-up
- General Tune-up Recommendations
- Engine Troubleshooting
- Engine Mounting
- Engine/Transmission Removal and Installation
- Fuel System
- Description and Operation
- Checking the Fuel Level
- Draining Water From Fuel Tank
- Filters
- Bleeding the Fuel System
- Fuel Tank Removal and Installation
- Cooling System
- Description and Operation
- Cooling System Components
- Checking the Engine Coolant Level
- Checking the Engine Coolant Condition
- Replacing the Engine Coolant
- Flushing the Cooling System
- Cleaning the Oil Cooler and Radiator
- Radiator Removal and Installation
- Testing and Maintaining the Cooling System
- Optional Radiator Sand Grill
- Cooling System Troubleshooting
- Coupling
- Description and Operation
- Coupling Assembly
- Air Intake System
- Description and Operation
- Air Intake Assembly
- Precleaner
- Air Filter Replacement
- Extending Turbocharger Life
- Exhaust System
- Description and Operation
- Exhaust System Assembly
- Hydraulic Systems
- Hydraulic Systems
- Work Pump
- Transfer Pump
- Valves
- Control Valves
- Auxiliary Valves
- Joystick Valve
- Steering System
- Brake Hydraulics
- Hydraulic Tank and Filters
- Cylinders
- Cab Tilt Hydraulics
- Hydraulic Cooling
- Hydraulic Systems
- Machine Hydraulics
- Main Hydraulic System
- Hydraulic System Cleaning
- Transmission Charge System
- Hydraulic Testing
- Schematics
- Hydraulic Schematic Symbols
- Hydraulic System Troubleshooting
- Work Pump
- Description and Operation
- Work Pump Components
- Theory of Operation
- Work Pump Specifications
- Work Pump Removal
- Work Pump Installation
- Work Pump Disassembly
- Work Pump Assembly
- Pump Delivery Tests
- Work Pump Troubleshooting
- Transfer Pump
- Description and Operation
- Transfer Pump Troubleshooting
- Valves
- Valve Locations
- Control Valves
- Auxiliary Valves
- Joystick Valve
- Control Valves
- Description and Operation
- Control Valve Removal and Installation
- Control Valve Servicing
- Control Valve Internal Leakage Test
- Control Valve Hoses and Fittings
- Auxiliary Valves
- General
- Priority Valve
- Orbitrol Steering Control Valve
- Steering Control Unit Components
- Steering Control Unit Servicing Tools
- Steering Control Unit Disassembly
- Steering Control Unit Assembly
- Joystick Valve
- Description and Operation
- Joystick Valve Components
- Joystick Removal and Installation
- Joystick Servicing
- Steering System
- Description and Operation
- Steering Cylinder Removal and Installation
- Steering Control Unit Removal and Installation
- Steering Troubleshooting
- Brake Hydraulics
- Description and Operation
- Manual Parking Brake Release System
- Brake System Valves
- Bleeding the Brakes
- Brake System Troubleshooting
- Hydraulic Tank and Filters
- Description and Operation
- Hydraulic Tank Removal
- Hydraulic Tank Installation
- Changing Hydraulic Oil Filter
- Cylinders
- Description and Operation
- Cylinder Removal and Installation
- Cylinder Disassembly
- Cylinder Assembly
- Cylinder Internal Leakage Test
- Hydraulic Cylinders Troubleshooting
- Cab Tilt Hydraulics
- Description and Operation
- Cab Tilt Operation
- Cab Tilt Cylinder Removal and Installation
- Cab Tilt Cylinder Servicing
- Mechanical Support/Cylinder Lock
- Cab Tilt Pump and Selector Valve
- Pump Servicing
- Cab Tilt Troubleshooting
- Hydraulic Cooling
- Description and Operation
- Electrical Systems
- Electrical
- EGS Controller
- Monitor
- Wiring Harness
- Electrical Circuit Testing
- Electrical
- Description and Operation
- Schematics
- Components
- Locator Abbreviations
- Component Locator – Cab Harness
- Component Locator – Console
- Component Locator – Fuse Panel
- Component Locator – Monitor Harness
- Component Locator – EGS Wiring
- Component Locator – Joystick
- Component Locator – Hydraulic Tank Harness
- Component Locator – Engine/Transmission Harness RH
- Component Locator – Engine/Transmission Harness LH
- Component Locator – Cab Roof Harness
- Component Locator – Radio Harness
- Component Locator – Work Lights Option
- Component Locator – Road Lights Option
- Using Booster Batteries
- Servicing Batteries
- Replacing Fuses
- Electrical System Troubleshooting
- EGS Controller
- Description and Operation
- EGS Override Switch
- EGS Configuration Code
- EGS Testing
- EGS Controller Boot Replacement
- EGS Troubleshooting
- Monitor
- Description and Operation
- Monitor Programming
- Temperature Gauge Accuracy
- Electrical Troubleshooting – Monitor Instrument Panel
- Wiring Harness
- General
- Wiring Harness Repair Procedures
- Connectors
- Electrical Circuit Testing
- Circuit Testing
- Circuit Malfunctions Summary
- Power Train
- Power Train
- Transmission/Torque Converter
- Brakes
- Drivelines
- Axles
- Differentials
- Power Train
- General
- Transmission/Torque Converter
- Description and Operation
- Transmission Removal and Installation
- Transmission Testing
- Transmission Oil
- Transmission Troubleshooting
- Brakes
- Description and Operation
- Brake System Check Valve
- Check Brake Wear – ZF Axles
- Brake Troubleshooting
- Drivelines
- Description and Operation
- Inspection of Driveshaft Condition and Alignment
- Driveline Removal and Installation
- Pillow Blocks
- Drivelines Troubleshooting
- Axles
- Description and Operation
- Axle Components
- Front Axle Removal and Installation
- Removal and Installation of Rear Axle
- Tire/Axle Combinations
- Tire Chain Approval
- Tire Pressures and Wheel Nut Torque
- Axle Oil
- Axle Troubleshooting
- Differentials
- Description and Operation
- Differential System Lock Test
- Hydraloc Differential Seal Testing – Dana Clark Axles
- Differential Servicing
- Differential Lock Troubleshooting
- Cab Systems
- Cab Mounting
- Windows
- Operator’s Seat
- Mechanical Controls
- Heater and Air Conditioner
- Cab Mounting
- Description and Operation
- Servicing Cab Mounts
- Checking Cab Tilt Locking Pin Bolts
- Cleaning Out Cab Drain Holes
- Windows
- Description and Operation
- Typical Window Installations
- Cleaning the Windows
- Window Washer Reservoir
- Operator’s Seat
- Description and Operation
- Seat Belt
- Seat Servicing
- Seat Removal and Installation
- Mechanical Controls
- Description and Operation
- Accelerator Pedal Adjustment
- Service Brake Pedal Adjustment
- Heater and Air Conditioner
- Description and Operation
- Air Conditioner Safety Precautions
- Inspecting the AC System
- Charging the AC System
- Heater/Air Conditioner Troubleshooting
- Frames
- Frames
- Frame Hinge
- Decking Blade
- Central Lubrication System
- Frames
- Description and Operation
- Engine Compartment Panels
- Step
- Frame Hinge
- Frame Hinge
- Alternative Method for Separating the Frames
- Decking Blade
- Description and Operation
- Decking Blade Components
- Decking Cylinder Removal and Installation
- Decking Cylinder Internal Leakage Test
- Decking Blade Troubleshooting
- Central Lubrication System
- Central Lubrication System
- Tree Handling
- Crane/Tree Handling
- Crane/Tree Handling
- General
- Winches
- Description and Operation
- Winch Removal
- Control Cable Adjustment
- Changing the Winch Oil
- Winch Troubleshooting
- Booms/Arch
- Description and Operation
- Dual Arch
- Cable Fairleads
- Lubrication
- Arch and Boom Troubleshooting
- Grapple (To Unit WC848GX01010)
- Grapple Description and Operation
- Grapple Servicing
- Grapple Snubber Description and Operation
- Grapple Snubber Servicing
- Grapple Troubleshooting
- Grapple (Unit WC848GX01011 and up)
- Remove and Install Grapple
- Remove, Disassemble, Assemble and Install Damper
- Grapple Damper Adjustment
- Lubricate Damper, Yoke and Cross Head Pins
- Remove and Install Flow Divider
- Grapple Cylinders (Unit WC848GX01011 and Up)
- Description and Operation
- Remove and Install Grapple Tong Cylinder
- Cylinder Components
- Cylinder Disassembly
- Cylinder Assembly
- Cylinder Internal Leakage Test
- Cylinders Troubleshooting
- Rotate Motor (To Unit WC848GX01010)
- Description and Operation
- Grapple Rotate Motor Servicing
- Grapple Rotate Motor and Yoke (Unit WC848GX01011 and up)
- Remove Rotate Motor
- Disassemble Rotate Motor
- Assemble Rotate Motor
- Install Rotate Motor
- Remove and Install Rotate Motor Drive Gear
- Remove, Disassemble, Assemble and Install Grapple Rotate Yoke
- Remove and Install Rotary Manifold
- Disassemble and Assemble Rotary Manifold
- Grapple Rotator (To Unit WC848GX01010)
- Description and Operation
- Rotator Servicing
- Swivel Servicing
- Technical Information
- Tool List
- General Torque Specifications
- Measurement Conversion Tables
- General Machine Specifications
- Tool List
- General Torque Specifications
- Fastener Torque Recommendations
- Hydraulic Fittings Torque Recommendations
- Measurement Conversion Tables
- Miscellaneous Conversions
- Metric and Imperial Unit Expressions
- Wood Measurement Equivalents
- Weights of Commercially Important Woods
- General Machine Specifications
- Cable Skidder
- Grapple Skidder
- Dimensions – Grapple Heads
- Equipment Specifications
- Tire Sizes, Air Pressures and EGS Codes
- Approximate Hydraulic Speeds
- Vehicle Speeds
- Approximate Machine Weights
- Tire Ground Pressure
- Recommended Fluids and Lubricants
