Massey Ferguson A.2X.18 – Mid Mount Valve Module: External Hydraulic Valve 2 Issue
Issue description
A malfunction within the second external hydraulic remote valve (spool valve) circuit. This is frequently tied to an issue with the spool position sensor value, a loss of communication, or a calibration failure.
Applies to these machines
40 machines- 5710SL
- 5711SL
- 5712SL
- 5713SL
- T4
- 4707
- 4708
- 4709
- 4710
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
- 7714
- 7715
- 7715S
- 7716
- 7716S
- 7718
- 7718S
- 7719
- 7720
- 7720S
- 7722
- 7722S
- 7724
- 7724S
- 7726
- 7726S
Check the cause
Inspect wiring and connections at the hydraulic valve harness for pushed pins, corrosion, or chafing
Verify CAN communication integrity between the Dash and the Mid Mount Valve Module
Check the spool position sensor values using a diagnostic tool to see if they are erratic or out-of-range
Repair steps
Inspect the Harness
Visually inspect the wiring harness leading to External Hydraulic Valve 2. Clean the connectors and check for pushed pins, corrosion, or wire chafing.
Test the Sensor/Valve
If the wiring is intact, use a Massey Ferguson compatible diagnostic tool to monitor the live data for External Valve 2's spool position sensor.
Replace Faulty Components
If the sensor is dead or the electric spool slice has failed internally, replace the spool position sensor or the complete electric spool slice assembly.
Recalibrate
After replacing the valve or sensor, you must perform a hydraulic valve calibration. Note: Replacement electric spool slices must be programmed to the tractor.
Parts you might need
(4)Electric Spool Slice (Complete Unit)
3797234M6Alternate/superseded numbers: 3797234M5, 3797234M4, 3797234M3, 3796930M12. Fitment note: This unit needs to be programmed to the tractor upon installation.
Pilot Pressure Control for Electric Spool Valve
R917008801Spool Valve Quick Release Coupling
4305831M1Alternate part number: 4305831M3
Spool Position Sensor
Specific OEM part number not provided in search results; often integrated into the electric spool slice.
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