New Holland EHR 4330 – EHR: Rear Remote No.8 - Position Transducer Faulty

The internal position sensor (transducer) on the 8th electro-hydraulic remote valve is sending an implausible signal or has failed. This can be caused by an electrical failure within the transducer itself, a communication error on the CAN bus, or a mechanically stuck valve spool that prevents the transducer from reading the expected physical position.

• T8 Series
• T9 Series
• T9.390
• T9.450
• T9.505
• T9.560
• T9.615
• T9.670
• T7000 Series
• T7030
• T7040
• T7050
• T7060
• T6000 Series

1. 1

   Manually stroke the valve back and forth using the cab controls to attempt to dislodge any debris causing the spool to stick.

2. 2

   Verify that the tie bolts holding the valve sections together were not over-torqued, which can cause the internal spool to bind.

3. 3

   Check the electrical connector at the Rear Remote No. 8 valve head for corrosion, moisture, or pushed pins that could cause implausible CAN messages.

4. 4

   Use the tractor's display monitor to run the EHR valve calibration procedure. If the calibration fails the first time, stroke the valve back and forth again and retry.

5. 5

   Check the maintenance schedule to ensure the hydraulic fluid and filters are not overdue for a change, as dirty fluid is a primary cause of sticking spools.

1. 1

   Depressurize

   Turn off the engine and relieve all hydraulic system pressure.

2. 2

   Disconnect

   Unplug the CAN/electrical harness from the Rear Remote No. 8 valve section.

3. 3

   Remove Faulty Component

   Unbolt the tie rods/bolts securing the valve stack and carefully remove the No. 8 EHR valve slice (or unbolt the electronic actuator head if serviced separately).

4. 4

   Install Replacement

   Insert the new valve section. Torque the valve stack tie bolts strictly to the OEM specification found in the service manual. Over-torquing will warp the housing and cause the new spool to stick.

5. 5

   Address the Valve

   Use the tractor's display or the CNH Electronic Service Tool (EST) to program the new valve's address so the system recognizes it as 'Valve No. 8'.

6. 6

   Calibrate

   Perform the automated EHR valve calibration procedure via the tractor's display monitor.

7. 7

   Test

   Clear the EHR 4330 fault code and test the remote for normal operation.