John Deere PROHYTRONIC Electronic Hitch Control System Component Technical Manual (CTM4460)

Table of Contents:
   HITCH CONTROL
      Specifications
      Torques for hardware
      Replacing hitch control valve
      Replacing draft sensor
      Replacing draft sensor support
      Installing cam
      Replacing and adjusting position sensor
      Checking setting of position sensor
      Replacing electronic control unit
      Replacing operation box and control box
      Hitch control- exploded view
   ROCKSHAFT
      Special tools
      Torques for hardware
      Removing rockshaft cylinder
      Removing rockshaft piston
      Installing set of seals
      Installing rockshaft piston
      Removing surge relief valve
      Installing surge relief valve
      Replacing bearing bushings
      Installing rockshaft
      Installing rockshaft cylinder
      Installing lift arms
      Securing sway blocks
      Replacing additional rockshaft cylinder
      Replacing bearings of additional rockshaft cylinder
      Disassembling additional rockshaft cylinder
      Replacing seal ring and wiper seal
      Assembling additional rockshaft cylinder
      Three-point hitch- exploded view
   WIRING HARNESSES
      Special tools
      Disconnecting electrical circuit
      Hitch control wiring harnesses
      Disconnecting point- hitch control wiring harness
      Replacing snap connector on
   pin connector
      Replacing snap connector on 2-pin or 3-pin connector
      Stripping cable ends
      Crimping snap connectors
      Removing snap connector on 18-pin connector
      Crimping snap connector on 18-pin connector
      Installing snap connector on 18-pin connector
      Replacing individual snap connectors
      Fuses of hitch control system
   DESCRIPTION AND OPERATION
      Description and operation
      Control box
      Operation box
      Position sensor
      Draft sensor
      Electronic control unit
      Control valve
      Control valve in neutral position
      Control valve in “ Raise\\" position
      Control valve in “ Lower\\" position
   TROUBLESHOOTING AND TESTS
      Special tools
      General tests
      Functional test of control valve
      Testing of hydraulic system
      Testing of electric/electronic system
      Functional test of PROHYTRONIC
      Troubleshooting using PROHYTRONIC
      Test Kit FKM10426
      Control and display elements of
      Test Box FKM10426-1
      Explanation of the test steps
      Instructions for test procedure
      Test conditions
      Test procedure
      Explanation of the error codes “ E.“
   ELECTRICAL CIRCUIT AND WIRING DIAGRAMS
      Parts designations in electrical circuit and wiring diagrams
      designations in electrical circuit diagram
      Wiring harness designations in wiring diagrams
      Wiring harnesses of electronic hitch control
      Wiring diagram
      Pin assignment- electronic control unit
      Pin assignment- operation box
      Pin assignment- control box