John Deere H752 Harvester Head Index:

• Contents
  • Safety – General Precautions
    • General
    • Recognize Safety Information
    • Understand Signal Words
    • Follow Safety Instructions
    • Before Use
  • Safety – Operating Precautions
    • Operating Safety Precautions
    • Before a New Shift
    • Transport by Road
    • Prepare Harvester Head for Storage
  • Safety – Maintenance Precautions
    • General
    • Working with Oils and Chemicals
  • Planning Your Work
    • General
    • Example of How a Map Sketch May Look
  • Thinning
    • General
    • Working Techniques for Thinning
  • Regeneration Harvesting
    • General
    • Working Techniques for Regeneration Harvesting
  • Felling
    • General
    • Stump Height
    • Felling Stage
    • When Felling on Sloping Ground
    • Felling Trees with Large Roots
  • Delimbing and Crosscutting
    • General
  • Maintenance – General
    • General
    • Maintenance Safety Precautions
    • Special Tools
    • Tightening Torques for Bolt Fastenings
  • Oils and Fluids
    • Instructions for Greasing
    • Oil and Fluid Recommendations
  • Periodic Maintenance
    • Maintenance Daily or after Every 10 Hours
    • Maintenance Weekly or after Every 50 Hours
    • Maintenance after Every 250 Hours
  • Maintenance – Feeding Equipment
    • Feeding Rollers
    • Feeding Roller Motors
  • Maintenance – Saw Equipment
    • Saw Unit Safety
    • Saw Components
    • Description of Operation
    • Hydraulic Pressures and Volyme Flows
    • Chain Saw Maintenance
    • Changing the Saw Chain
    • Sharpening (.404 Chain Pitch)
    • Dos and Don’ts of Saw Chain Sharpening
    • Chain Lubrication System
    • Checking the chain lubrication system
    • Chain tensioning in conjunction with sawing
    • Bleeding the Chain Tensioning System
    • Adjusting the pressure of the chain tensioner
    • Saw Bar Maintenance
    • Changing the Saw Bar
    • Changing the Bar Holder
    • Adjusting the Sensors
    • Checking/Replacing the Tip Sprocket
  • Maintenance – Length Measuring System
    • General
    • Replacing the pulse sensor
  • Maintenance – Diameter Measuring System
    • General
    • Checking the Set Values
    • Adjustment
    • Demounting the Diameter Sensor
    • Mounting the diameter sensor
  • Maintenance – Delimbing Knives
    • Sharpening
    • Tensioning the Expander Pin of the Lower Delimbing Knife
  • Troubleshooting
    • Checklist
    • Troubleshooting
  • Hydraulic System
    • General
    • Hydraulic Components of the Harvester Head
    • Hydraulic Components of the Valve Block
    • Electric connectors, valve block
    • Hydraulic Diagrams
    • Checking and Adjusting Pressures
    • Checking the settings of the main pressure relief valve (6)
    • Adjusting the main pressure relief valve (6)
    • Checking/adjusting the low pressure pressure reduce valve (8)
    • Checking/adjusting the pressing pressure pilot valve for delimbing knives, lower delimbing knives (24), upper delimbing knives (24)
    • Checking/adjusting the feed roller pressing pressure pilot valve (24)
    • Checking/adjusting the measuring wheel pressure reduce valve (48)
    • Checking/adjusting the saw bar feed/return pressure reduce valve (12)
    • Adjusting the pressure of the automatic chain tensioner (34)
    • Checking/adjusting the pressure reduce valve (37) for feed forward
  • Electrical System
    • General
    • Control and Measuring System
    • Replacing an Electric Lead in HHM Connectors
    • Connectors in HHM
    • Wiring Diagrams
  • Optional Equipment – Color Marking Systems
    • Before Use
    • Maintenance
    • Useful Tips
    • When not in Use
  • Technical Data
    • H752 Harvester Head