Case IH 1931-02 - UCM – UCM: High temperature in the actuator of rear pilot head #2

High temperature in the actuator of rear pilot head #2

• MAGNUM AFS Connect
• Magnum 400 AFS Connect
• Optum AFS Connect
• Steiger AFS Connect

1. 1

   Check the rear pilot head #2 actuator (EHR remote valve actuator) for excessive physical heat.

2. 2

   Inspect the wiring harness and connectors between the UCM and the rear pilot head #2 actuator for shorts, corrosion, or damage that could cause high resistance or false temperature readings.

3. 3

   Ensure the remote valve spool is not mechanically binding, which could cause the actuator to overwork and overheat.

1. 1

   Power down and disconnect battery

   Power down the tractor and disconnect the battery to protect the UCM.

2. 2

   Locate actuator

   Locate the rear pilot head #2 actuator on the rear remote valve stack.

3. 3

   Disconnect harness

   Disconnect the electrical harness from the actuator.

4. 4

   Remove faulty actuator

   Remove the mounting hardware and detach the overheating/faulty actuator from the valve body.

5. 5

   Install replacement actuator

   Install the replacement actuator and reconnect the wiring harness.

6. 6

   Calibrate EHR remote valves

   Power on the tractor and use the AFS Pro 1200 monitor to perform a calibration of the EHR remote valves.