John Deere 560, 660 Skidder Index:

• 0. General Information
  • 0010 How To Use This Book
    • 1. Serial Numbers
    • 2. Component Numbers
    • 3. Page Layout
    • 4. Abbreviations
  • 0020 Chapters and Sections Contents
    • 1. Chapters and Sections Contents
  • 0030 Foreword and Warranty
    • 1. Foreword
    • 2. Modifications or Repairs to Roll-over Protective Structures (ROPS)
    • 3. Non-approved Field Product Changes
    • 4. Warranty Certificate – Timberjack Off-highway Vehicles
    • 5. Items Not Covered By Warranty
  • 0040 Safety Information
    • 1. General
    • 2. Safety Symbol
    • 3. Understanding Signal Words
    • 4. General Safety Precautions
    • 5. Servicing Safety Precautions
    • 6. Driving/Transporting on Public Roads
    • 7. Fire Prevention
      • 7.1 General
      • 7.2 What To To If the Machine Catches Fire
  • 0060 General – Component Locators
    • 1. General
    • 2. Component Locators
      • 2.1 Engine Component Locator
      • 2.2 Hydraulic Component Locator
      • 2.3 Electrical Component Locator
      • 2.4 Power Train Component Locator
      • 2.5 Cab Component Locator
      • 2.6 Frames Component Locator
      • 2.7 Tree Handling Component Locator
  • 0070 Towing/Transporting the Skidder
    • 1. Towing Over a Short Distance
    • 2. Releasing the Brakes
    • 3. Towing Procedure
    • 4. Transporting the Skidder
    • 5. Driving the Skidder on the Road
• 1. Engine Systems
  • 1100 Engine
    • 1. Description and Operation
    • 2. Engine Troubleshooting
  • 1300 Engine Mounting
    • 1. Engne/Transmission Removal and Installation
      • 1.1 General
      • 1.2 Access to Engine/Transmission
      • 1.3 Wiring Harnesses
      • 1.4 Engine Hoses
      • 1.5 Engine Mechanical Connections
      • 1.6 Transmission Hoses
      • 1.7 Transmission Mechanical Connections
      • 1.8 Engine and Transmission Mounts
  • 1400 Fuel System
    • 1. Description and Operation
    • 2. Fuel System Components
    • 3. Fuel/Water Separator
      • 3.1 Fuel/Water Separator Options
      • 3.2 Changing the Separator Element (Stanadyne)
      • 3.3 Cleaning the Separator (Racor)
      • 3.4 Changing the Separator Element (Racor)
    • 4. Fuel Tank Removal and Installation
      • 4.1 Fuel Tank Removal
      • 4.2 Fuel Tank Installation
      • 4.3 Bleeding the Fuel Lines and Filters
    • 5. Fuel Filters
      • 5.1 Changing Fuel Filters
  • 1500 Cooling System
    • 1. Description and Operation
    • 2. Cooling System Components
    • 3. DraIning the Cooling System
    • 4. Flushing the Cooling System
    • 5. Radiator Removal and Installation
      • 5.1 Radiator Removal
      • 5.2 Radiator Installation
    • 6. Filing and Bleeding the Cooling System
    • 7. Testing and Maintaining the Cooling System
      • 7.1 General
      • 7.2 Recommended Fluids
      • 7.3 Supplemental Coolant Additives
      • 7.4 Testing the Coolant
      • 7.5 Solder Bloom
      • 7.6 Cooling System Cleaners
      • 7.7 Maintenance Records
    • 8. Changing the Coolant Filter – 660 Skidder Only
    • 9. Optional Radiator Sand Grill
  • 1600 Coupling
    • 1. Description and Operation
    • 2. Engine Removal and Installation
      • 2.1 Removal of Engine from Transmission
      • 2.2 Installation of Engine on Transmission
  • 1700 Air Intake System
    • 1. Description and Operation
      • 1.1 Air Cleaner
    • 2. Air Intake Assembly
      • 2.1 Air Intake Components
      • 2.2 Assembly
    • 3. Precleaner Option
    • 4. Air Filter Replacement
  • 1800 Exhaust System
    • 1. Description and Operation
    • 2. Exhaust System Assembly
      • 2.1 Exhaust Installation
      • 2.2 Seal Clamp Installation
      • 2.3 Muffler Cover Installation
• 2. Hydraulic Systems
  • 2000 Hydraulic Systems
    • 1. Machine Hydraulics
    • 2. Main Hydraulic System
      • 2.1 Description and Operation
      • 2.2 De-aerating the Main Hydraulic System
    • 3. Hydraulic System Cleaning
    • 4. Transmission Charge System
      • 4.1 Description and Operation
    • 5. Hydraulic Testing
      • 5.1 Hydraulic Test Tools
      • 5.2 Hydraulic Circuit Testing
      • 5.3 Controls
      • 5.4 Compensators and Pressure Relief Valves
    • 6. Schematics
      • 6.1 Line Sizing and Routing
      • 6.2 Reservoir Locations
      • 6.3 Hydraulic Schematic – 660 Cable Skidder (F280443)
    • 7. Hydraulic Schematic Symbols
      • 7.1 Miscellaneous Units
      • 7.2 Pumps and Motors
      • 7.3 Cylinders
      • 7.4 Methods of Operation
    • 8. Hydraulic System Troubleshooting
  • 2110 Work Pump
    • 1. Description and Operation
      • 1.1 General
    • 2. Work Pump Components
    • 3. Theory of Operation
      • 3.1 Variable Pumps
      • 3.2 Pressure Compensator
      • 3.3 Pump Unloading Solenoid
    • 4. Work Pump Specifications
    • 5. Work Pump Removal
    • 6. Work Pump Installation
    • 7. Work Pump Disassembly
      • 7.1 General
      • 7.2 Control Group
      • 7.3 Control Unit
      • 7.4 Control Unit Disassembly
      • 7.5 Control Unit Assembly
      • 7.6 Valve Plate Group
      • 7.7 Rotating Group
      • 7.8 Driveshaft Group
      • 7.9 Swashblock Group
    • 8. Work Pump Assembly
      • 8.1 Swashblock Group
      • 8.2 Driveshaft Group
      • 8.3 Rotating Group
      • 8.4 Valve Plate Group
      • 8.5 Control Group
      • 8.6 Shaft Torque Test
    • 9. Pump Delivery Tests
      • 9.1 General
      • 9.2 Pump Case Drain Flow Test
      • 9.3 Case Drain Flow Test Procedure
    • 10. Work Pump Troubleshooting
  • 2120 Transfer Pump
    • 1. Description and Operation
    • 2. Transfer Pump Troubleshooting
  • 2400 Valves
    • 1. Valve Locations
    • 2. Control Valves
    • 3. Auxilliary Valves
    • 4. Joystick Valve
  • 2410 Control Valves
    • 1. Description and Operation
    • 2. Control Valve Removal and Installation
      • 2.1 Decking Blade Control Valve Removal
      • 2.2 Decking Blade Control Valve Installation
      • 2.3 Grapple Control Valve Removal
      • 2.4 Grapple Control Valve Installation
    • 3. Control Valve Servicing
      • 3.1 Typical Control Valve Components
      • 3.2 Control Valve Disassembly
      • 3.3 Control Valve Assembly
      • 3.4 Link Operated Spool Section Components
      • 3.5 Link Operated Spool Section Disassembly
      • 3.6 Link Operated Spool Section Assembly
      • 3.7 Pilot Operated Spool Section Components
      • 3.8 Pilot Operated Spool Section Disassembly
      • 3.9 Pilot Operated Spool Section Assembly
      • 3.10 Solenoid Operated Spool Section Components
      • 3.11 Solenoid Operated Spool Section Disassembly
      • 3.12 Solenoid Operated Spool Section Assembly
      • 3.13 Relief Valves
      • 3.14 Relief Valve Disassembly
      • 3.15 Relief Valve Assembly
    • 4. Control Valve Internal Leakage Test
    • 5. Control Valve Hoses and Fittings
  • 2429 Auxiliary Valves
    • 1. General
    • 2. Priority Valve
      • 2.1 Description and Operation
      • 2.2 Priority Valve Removal
      • 2.3 Priority Valve Installation
      • 2.4 Priority Valve Servicing
      • 2.5 Priority Valve Testing
    • 3. Orbitrol Steering Control Valve
      • 3.1 Description and Operation
    • 4. Steering Control Unit Components
    • 5. Steering Control Unit Servicing Tools
    • 6. Steering Control Unit Disassembly
    • 7. Steering Control Unit Assembly
  • 2430 Joystick Valve
    • 1. Description and Operation
    • 2. Joystick Valve Components
    • 3. Joystick Removal and Installation
    • 4. Joystick Servicing
  • 2500 Steering System
    • 1. Description and Operation
    • 2. Steering Cylinder Removal and Installation
      • 2.1 Steering Cylinder Removal
      • 2.2 Steering Cylinder Installation
    • 3. Steering Control Unit Removal and Installation
      • 3.1 Steering Control
      • 3.2 Steering Control Unit Removal
      • 3.3 Steering Control Unit Installation
    • 4. Steering Troubleshooting
  • 2600 Brake Hydraulics
    • 1. Description and Operation
    • 2. Manual Parking Brake Release System
      • 2.1 General
      • 2.2 Manually releasing the Parking Brake
      • 2.3 Manually Refilling the Accumulator
      • 2.4 Manually Discharging the Accumulator
      • 2.5 System Testing
    • 3. Brake System Valves
    • 4. Bleeding the Brakes
  • 2700 Hydraulic Tank and Filters
    • 1. Description and Operation
      • 1.1 Hydraulic Tank
      • 1.2 Hydraulic Tank Components
      • 1.3 Filters
    • 2. Hydraulic Tank Removal
    • 3. Hydraulic Tank Installation
  • 2800 Cylinders
    • 1. Description and Operation
      • 1.1 General
      • 1.2 Cylinder Components
    • 2. Cylinder Removal and Installation
    • 3. Cylinder Disassembly
    • 4. Cylinder Assembly
      • 4.1 Rod Guide Assembly
      • 4.2 Piston Assembly
      • 4.3 Piston Rod Assembly
      • 4.4 Cylinder Assembly
    • 5. Cylinder Internal Leakage Test
    • 6. Hydraulic Cylinders Troubleshooting
  • 2940 Cab Tilt Hydraulics
    • 1. Descritpion and Operation
    • 2. Cab Tilt Operation
      • 2.1 Raising the Cab
      • 2.2 Lowering the Cab
    • 3. Cab Tilt Cylinder Removal and Installation
      • 3.1 Cab Tilt Cylinder Removal
      • 3.2 Cab Tilt Cylinder Installation
    • 4. Cab Tilt Cylinder Servicing
      • 4.1 Cab Tilt Cylinder Components
      • 4.2 Cylinder Disassembly
      • 4.3 Cylinder Assembly
    • 5. Mechanical Support/Cylinder Lock
    • 6. Cab Tilt Pump and Selector Valve
    • 7. Pump Servicing
    • 8. Cab Tilt Troubleshooting
  • 2950 Hydraulic Cooling
    • 1. Description and Operation
      • 1.1 Hydraulic Coolers
      • 1.2 Main Hydraulic System Cooling
      • 1.3 Transmission Charge System Cooling
• 3. Electrical Systems
  • 3000 Electrical
    • 1. Description and Operation
      • 1.1 General
      • 1.2 Alternator and Batteries
      • 1.3 Ignition Circuits
      • 1.4 Transmisison Circuits
      • 1.5 Sensors and Indicators
      • 1.6 Accessories
      • 1.7 A/C and Heater Circuits
      • 1.8 Lights
      • 1.9 Joystick Buttons
    • 2. Schematics
      • 2.1 Coding and Symbols – General
      • 2.2 Coding and Symbols – Wire Color and Number Coding
      • 2.3 Schematic Grid System
  • 3310 EGS Controller
    • 1. Description and Operation
      • 1.1 Electronic Gear Selector
      • 1.2 EGS Interlock System
      • 1.3 EGS Controller and Interlock Schematic
    • 2. EGS Overrid Switch
    • 3. EGS Configuration Code
      • 3.1 General
      • 3.2 Display Configuration Code
      • 3.3 Changing Configuration Code
    • 4. EGS Testing
      • 4.1 General
      • 4.2 Input Test
      • 4.3 Output Test
      • 4.4 Speed Sensor Test
      • 4.5 MPH Display Test
    • 5. EGS Troubleshooting
    • 6. EGS Interlock Troubleshooting
    • 7. EGS Controller Boot Replacement
  • 3311 Gauges
    • 1. Gauge Instrument Panel
    • 2. Components – Gauge Instrument Panel
    • 3. Locator Abbreviations
    • 4. Component Locator – Cab Harness
    • 5. Component Locator – Console
    • 6. Component Locator – Fuse Panel
    • 7. Component Locator – Gauge Instrument Harness
    • 8. Component Locator – Gauge Instrument Panel
    • 9. Component Locator – EGS Wiring
    • 10. Compnent Locator – Joystick Grapple Control
    • 11. Component Locator – Hydraulic Tank Harness
    • 12. Component Locator – Engine/Trans Harness RH 560
    • 13. Component Locator – Engine/Trans Harness RH 660
    • 14. Component Locator – Transmission Harness LH 560
    • 15. Component Locator – Transmission Harness LH 660
    • 16. Component Locator – Cab Roof Harness
    • 17. Component Locator – Radio Harness
    • 18. Component Locator – Work Lights Option
    • 19. Component Locator – Road Lights Option
    • 20. Electrical Troubleshooting – Gauge Instrument Panel
  • 3312 Monitor
    • 1. Description and Operation
      • 1.1 General
      • 1.2 Monitor
    • 2. Monitor Programming
      • 2.1 Configuration Code Setting
      • 2.2 Error Codes
    • 3. Temperature Gauge Accuracy
    • 4. Components – Monitor Instrument Panel
    • 5. Locator Abbreviations
    • 6. Component Locator – Cab Harness
    • 7. Component Locator – Console
    • 8. Component Locator – Fuse Panel
    • 9. Component Locator – Monitor Harness
    • 10. Component Locator – EGS Wiring
    • 11. Component Locator – Joystick Grapple Control
    • 12. Component Locator – Hydraulic Tank Harness
    • 13. Component Locator – Engine/Trans Harness RH 560
    • 14. Component Locator – Engine/Trans Harness RH 660
    • 15. Component Locator – Transmission Harness LH 560
    • 16. Component Locator – Transmission Harness LH 660
    • 17. Component Locator – Cab Roof Harness
    • 18. Component Locator – Radio Harness
    • 19. Component Locator – Work Lights Option
    • 20. Component Locator – Road Lights Option
    • 21. Electrical Troubleshooting – Monitor Instrument Panel
  • 3900 Wiring Harness
    • 1. General
    • 2. Wiring Harness Repair Procedures
      • 2.1 Visual Inspection
      • 2.2 Wire Splicing
      • 2.3 Connector Repairs
    • 3. Connectors
  • 3910 Electrical Circuit Testing
    • 1. Circuit Testing
      • 1.1 Rules and Guidelines
      • 1.2 Electrical Tools
      • 1.3 Basic Circuits
      • 1.4 Circuit Resistance
      • 1.5 Tracing Circuits
      • 1.6 Continuity Tests and Resistance Measurements
• 4. Power Train
  • 4000 Power Train
    • 1. General
  • 4110 Transmission/Torque Converter
    • 1. Descritpion and Operation
      • 1.1 Torque Converter
      • 1.2 Transmission
      • 1.3 Transmission Shift Lever
      • 1.4 Transmission Controller
      • 1.5 Hydraulic Diagram
      • 1.6 Directional Pressure Modulator
      • 1.7 Transmission Charge Pump
      • 1.8 Transmission Oil Circuit
    • 2. Transmission Removal and Installation
    • 3. Transmission Testing
      • 3.1 Charge Pressure Test Ports
      • 3.2 Testing Converter Out Pressure
      • 3.3 Torque Converter Stall Speed
      • 3.4 Declutch System Test
    • 4. Transmisison Troubleshooting
  • 4150 Brakes
    • 1. Description and Operation
    • 2. Brake System Check Valve
    • 3. Brake Troubleshooting
      • 3.1 Parking Brake Troubleshooting
      • 3.2 Wheel End Brake Troubleshooting
  • 4200 Drivelines
    • 1. Description and Operation
    • 2. Inspection of Driveshaft Condition and Alignment
    • 3. Driveline Removal and Installation
      • 3.1 Drivelines Removal
      • 3.2 Driveline Installation
    • 4. Pillow Blocks
      • 4.1 Servicing the Front Frame Pillow Block
      • 4.2 Servicing the Rear Frame Pillow Block
      • 4.3 T60 Winch Pillow Block
    • 5. Drivelines Troubleshooting
  • 4400 Axles
    • 1. Description and Operation
      • 1.1 General
      • 1.2 Axle Options
    • 2. Axle Components
    • 3. Front Axle Removal and Installation
      • 3.1 Front Axle Removal
      • 3.2 Front Axle Installation
    • 4. Removal and installation of Rear Axle
      • 4.1 Rear Axle Removal
      • 4.2 Rear Axle Installation
    • 5. Tire/Axle Combinations
    • 6. Tire Chain Approval
    • 7. Axle Troubleshooting
  • 4500 Differentials
    • 1. Description and Operation
    • 2. Differential System Lock Test
    • 3. Hydraloc Differential Seal Testing
    • 4. Differential Servicing
      • 4.1 General
      • 4.2 Differential ring Gear Bolts
    • 5. Differential Lock Troubleshooting
• 5. Cab System
  • 5120 Cab Mounting
    • 1. Description and Operation
    • 2. Servicing Cab Mounts
      • 2.1 Special Tools
      • 2.2 Replacing Cab Mounts
  • 5160 Windows
    • 1. Description and Operation
    • 2. Typical Window Installations
    • 3. Cleaning the Windows
  • 5200 Operators Seat
    • 1. Description and Operation
      • 1.1 General
      • 1.2 Seat Servicing
      • 1.3 EGS Interlock Switch
      • 1.4 Air Seat Connectors
    • 2. Seat Removal and Installation
  • 5400 Mechanical Controls
    • 1. Description and Operation
    • 2. Accelerator Pedal Adjustment
    • 3. Service Brake Pedal Adjustment
  • 5500 Heater and Air Conditioner
    • 1. Description and Operation
      • 1.1 General
      • 1.2 Heater/Air Conditioner Components
      • 1.3 AC Component Operation
      • 1.4 Compressor
      • 1.5 Condenser
      • 1.6 Receiver Dryer
      • 1.7 Expansion Valve
      • 1.8 Evaporator
      • 1.9 Refrigerant
      • 1.10 Controls
    • 2. Air Conditioner Safety Precautions
      • 2.1 General
      • 2.2 First Aid
      • 2.3 In Case of Fire
    • 3. Inspecting the AC System
      • 3.1 Check the Refrigerant Level
      • 3.2 Check the Dryer
      • 3.3 Check the Evaporator
      • 3.4 Check the Compressor
      • 3.5 Check the Condenser
      • 3.6 Check the Primary Filter
      • 3.7 Check the Secondary Filter
    • 4. Charging the AC System
    • 5. Heater/Air Conditioner Troubleshooting
• 6. Frames
  • 6000 Frames
    • 1. Description and Operation
      • 1.1 Frames
      • 1.2 Power Frame
      • 1.3 Carrier Frames
  • 6300 Frame Hinge
    • 1. Frame Hinge
      • 1.1 General
      • 1.2 Frame Hinge Components
      • 1.3 Hinge Pin Removal
      • 1.4 Hinge Pin Installation – Upper Pivot Assembly
      • 1.5 Hinge Pin Installation – Lower Pivot Assembly
    • 2. Alternative Method for Separating the Frames
  • 6910 Decking Blade
    • 1. Description and Operation
    • 2. Decking Blade Components
    • 3. Decking Cylinder Removal and Installation
      • 3.1 Decking Cylinder Removal
      • 3.2 Decking Cylinder Installation
    • 4. Decking Cylinder Internal Leakage Test
    • 5. Decking Blade Troubleshooting
  • 6920 Central Lubrication System
    • 1. Central Lubrication System
• 7. Tree Handling
  • 7000 Crane/Tree Handling
    • 1. Sections by Option
      • 1.1 660 Cabler Skidder
      • 1.2 560/660 Dual Arch Skidder With Esco Grapple
      • 1.3 560/660 Dual Arch Skidder With Timberjack Grapple
  • 7100 Winches
    • 1. Description and Operation
      • 1.1 Winch Control
      • 1.2 Winch, 560/660 Dual Arch Grapple Skidders
      • 1.3 Winch, 660 Cable Skidder
      • 1.4 T40-D Winch Plumbing Diagram
      • 1.5 T60 Winch Plumbing Diagram
    • 2. Winch Removal and Installation
      • 2.1 Winch Removal
    • 3. Control Cable Adjustment
    • 4. T40-D Winch Troubleshooting
  • 7212 Booms/Arch
    • 1. Description and Operation
      • 1.1 Dual Arch
      • 1.2 Cable Fairlead
    • 2. Dual Arch
      • 2.1 Dual Arch Components
      • 2.2 Boom Cylinders Removal and Installation
      • 2.3 Arch Cylinders Removal and Installation
      • 2.4 Boom Removal and Installation
      • 2.5 Arch Removal and Installation
    • 3. Cable Fairleads
      • 3.1 Cable Fairlead Components
      • 3.2 Fairlead Inspection
      • 3.3 Cable Fairlead Removal and Installation
      • 3.4 Fairlead Roller Replacement
    • 4. Lubrication
      • 4.1 Lubricate Grapple Hinge Points
  • 7243 Rotator – Timberjack Grapple
    • 1. Description and Operation
    • 2. Rotator Components
    • 3. Special Tools and Equipment
      • 3.1 Required Equipment
      • 3.2 Special Tools
    • 4. Rotator Removal and Installation
      • 4.1 Rotator Removal
      • 4.2 Rotator Installation
    • 5. Rotator Disassembly
    • 6. Rotator Assembly
    • 7. Motor/Rotator Arrangements
  • 7310 Timberjack Grapples
    • 1. Timberjack Grapple
      • 1.1 Description and Operation
      • 1.2 Grapple Components
      • 1.3 Grapple Cylinder Removal
      • 1.4 Grapple Link Removal
      • 1.5 Grapple Tine Removal
      • 1.6 Grapple Tine and Link Installation
      • 1.7 Grapple Cylinder Installation
    • 2. Timberjack Grapple Snubber
      • 2.1 Description and Operation
      • 2.2 Snubber Components
      • 2.3 Grapple Removal
      • 2.4 Grapple Installation
    • 3. Timberjack Grapple Specifications
    • 4. Timberjack Grapple Troubleshooting
  • 7311 Cylinders – Timberjack Grapples
    • 1. Descritpion and Operation
    • 2. Cylinder Components
    • 3. Cylinder Removal and Installation
    • 4. Special Tools
    • 5. Cylinder Disassembly
    • 6. Cylinder Assembly
  • 7313 Timberjack Grapple Rotate Motors
    • 1. Rotate Motors Used
    • 2. Motor Components, 110″ and 120″ TJ Grapples
    • 3. Motor Servicing Tools, 110″ & 120″ TJ Grapples
    • 4. Motor Disassem ly, 110″ & 120″ TJ Grapples
    • 5. Motor Assembly, 110″ & 120″ TJ Grapples
    • 6. Rotate Motor, 123″ TJ Grapples
    • 7. Motor Components, 123″ TJ Grapples
  • 7320 Esco Grapples
    • 1. Description and Operation
      • 1.1 Esco Sorting Head
      • 1.2 Esco Bunching Head
      • 1.3 Esco Snubber
      • 1.4 Hydraulic Rotate Motor
      • 1.5 Grapple Head Mount
    • 2. Sorting Head
      • 2.1 Sorting Head Components
      • 2.2 Sorting Head Disassembly – Grapple Cylinder Removal
      • 2.3 Sorting Head Disassembly – Grapple Arm Removal
      • 2.4 Sorting Head Disassembly – Grapple Head Removal
      • 2.5 Sorting Head Disassembly – Motor/Bearings Removal
      • 2.6 Sorting Head Assembly – Bearing Assembly
      • 2.7 Sorting Head Assembly – Hydraulic Motor Installation
      • 2.8 Sorting Head Assembly – Grapple Head Installation
      • 2.9 Sorting Head Assembly – Grapple Arm Installation
      • 2.10 Sorting Head Assembly – Grapple Cylinder Installation
    • 3. Bunching Head
      • 3.1 Bunching Head Components
      • 3.2 Head Disassembly – Grapple Arm/Cylinder Removal
      • 3.3 Head Disassembly – Grapple Head Removal
      • 3.4 Head Disassembly – Motor/Bearings Removal
      • 3.5 Head Assembly – Bearing Assembly
      • 3.6 Head Assembly – Hydraulic Motor Installation
      • 3.7 Head Assembly – Grapple Head Installation
      • 3.8 Head Assembly – Grapple Arm/Cylinder Installation
    • 4. Grapple Tong Stops on Esco Bunching Heads
    • 5. Troubleshooting
  • 7321 Cylinders – Esco Grapples
    • 1. Description and Operation
      • 1.1 Esco Sorting Head
      • 1.2 Esco Bunching Head
    • 2. Sorting Head Cylinder
      • 2.1 Sorting Head Cylinder Components
      • 2.2 Sorting Head Cylinder Removal and Installation
      • 2.3 Sorting Head Cylinder Disassembly
      • 2.4 Sorting Head Cylinder Assembly
    • 3. Bunching Head Cylinder
      • 3.1 Bunching Head Cylinder Components
      • 3.2 Bunching Head Cylinder Removal and Installation
      • 3.3 Bunching Head Cylinder Disassembly
      • 3.4 Bunching Head Cylinder Assembly
  • 7322 Esco Snubbers
    • 1. Esco Snubber Description and Operation
    • 2. Esco Snubber Adjustment
    • 3. Esco Snubber Troubleshooting
  • 7323 Esco Grapple Rotate Motor
    • 1. Description and Operation
    • 2. Motor Components
    • 3. Motor Disassembly
    • 4. Motor Assembly
    • 5. Cushion Valve Adjustment
• 8.
• 9. Technical Information
  • 9400 Tool List – 60 Series Skidder
  • 9500 General Torque Specifications
    • 1. Steel Fasteners
      • 1.1 Fastener Markings
      • 1.2 Imperial Hex Head
      • 1.3 Metric Hex Head
      • 1.4 Metric Flanged Hex Head
    • 2. Hydraulic Fittings
      • 2.1 O-Ring Fittings
      • 2.2 SAE Code 61 and 62 Flanges
      • 2.3 Tapered Pipe Threads (NPTF & NPT)
      • 2.4 Flare Fittings
  • 9700 Measurement Conversion Tables
    • 1. Miscellaneous Conversions
    • 2. Metric and Imperial Unit Expressions
    • 3. Wood Measurement Equivalents
    • 4. Weights of Commercially Important Woods
  • 9800 Machine Specifications
    • 1. Machine Dimensions
      • 1.1 560 Dual Arch Grapple Skidder
      • 1.2 660 Cable Skidder
      • 1.3 660 Dual Arch Grapple Skidder
    • 2. Dimensions – Grapple Heads
      • 2.1 Sorting Heads
      • 2.2 Bunching Heads
    • 3. Equipment Specifications
    • 4. Tire Sizes, Air Pressures and EGS Codes
    • 5. Approximate Hydraulic Speeds
    • 6. Vehicle Speeds
    • 7. Approximate Machine Weights
    • 8. Tire Ground Pressure
    • 9. Fluid and Lubricant Specifications
    • 10. Engine Oil Viscosity
    • 11. Powershift Transmission and Winch Oil Viscosity
    • 12. Recommended Hydraulic System Fluids
    • 13. Recommended Transmission and Winch Fluids
    • 14. Recommended Axle Fluids
    • 15. Fire Suppression Water Tank Fill
• 10. O.E.M. Data