Case IH 4107 – EHR (Electronic Hitch/Hydraulic Remote) / ATC (Auxiliary Tractor Control): Rear Remote No.1 - Spool Deflection Excessive

This code indicates an internal valve fault, likely mechanical, where the spool inside the #1 rear remote valve has traveled beyond its calibrated or expected physical range.

• Maxxum
• Steiger T4B
• MAXXUM T4E
• VESTRUM CVX
• Magnum
• Magnum Series (235-340, MX210, MX215, MX230, MX245, MX255, MX275, MX285)
• Puma Series (140, 150, 165, 180, 195, 210, 225)
• Steiger Series
• Maxxum / MXU Series (110, 115, 125, MXU100, MXU110, MXU115)

1. 1

   Check for associated EHR error codes. Note them, clear the codes using the Electronic Service Tool (EST) or a battery disconnect, and test the system for normal operation.

2. 2

   Verify that the tractor's hydraulic pressure is correct, as incorrect pressure can force the spool to deflect abnormally.

3. 3

   Check for surging or erratic flow when running a hydraulic motor (like a planter or air seeder vacuum fan), which points to a known design flaw rather than a standard failure.

1. 1

   Clear and Retest

   Clear the 4107 fault code. Cycle the key and operate the #1 remote. If the code does not return, it may have been a transient pressure spike.

2. 2

   Address Pressure Issues

   If the code returns, test the hydraulic pressure at the remotes. If the pressure is out of spec, diagnose the hydraulic pump and priority valve first.

3. 3

   Address Surging/Erratic Flow (If Applicable)

   If the code is accompanied by surging when running orbital motors, refer to Case IH Service Bulletin 2012-037. Install an updated flow control cartridge and/or an updated main spool that features an additional small hydraulic oil bleed.

4. 4

   Replace the EHR Valve / Spool

   If hydraulic pressure is correct and the code persists, the EHR valve has suffered an internal mechanical fault. Remove the #1 remote valve assembly from the rear valve stack.

5. 5

   Reassembly and Calibration

   Install the replacement EHR valve or updated spool. Once installed, you must use the tractor's display or the EST to perform a remote valve calibration so the EHR module can learn the travel limits of the new spool.