Massey Ferguson 0A.32.26: External Hydraulic Valve 3 Issue
Issue description
Malfunction, communication failure, or connection problem with the third external hydraulic remote (spool valve) on the tractor.
Applies to these machines
41 machines- 7724S
- 5712SL
- 7722
- 7722S
- 5713SL
- 7720S
- 7716
- 7718
- T4
- 7715
- 5710SL
- 7726
- 7726S
- 5711SL
- 7718S
- 7719
- 7714
- 7716S
- 7720
- Tier 4 (2015-2021)
- 7715S
- 7724
- 4707
- 4708
- 4709
- 4710
- 5608
- 5609
- 5610
- 5611
- 5612
- 5613
- 7614
- 7615
- 7616
- 7618
- 7619
- 7620
- 7622
- 7624
- 7626
Check the cause
Use a compatible diagnostic tool to verify the code is active
Locate External Hydraulic Valve 3 at the rear remote block and inspect the electrical connector for dirt, moisture, corrosion, or bent pins
Test the wiring harness leading to the valve for continuity, open circuits, or shorts to ground/power
Check the resistance of the valve's solenoid/electric spool slice to determine if the internal coil has failed
Repair steps
Ensure the tractor is turned off and hydraulic pressure is relieved from the system.
Disconnect the wiring harness from External Hydraulic Valve 3.
Clean the connector contacts using electrical contact cleaner.
If the wiring harness is damaged, repair or replace the affected wiring section.
If the wiring and connections are good but the fault persists, the electric spool slice (valve head) is likely defective and must be replaced.
Unbolt the faulty electric spool slice from the hydraulic valve block.
Be prepared to catch residual hydraulic fluid.
Install the new spool valve/slice and torque the mounting bolts to OEM specifications.
Reconnect the electrical harness.
Program/calibrate the new electric spool slice to the tractor's ECU using a dealer diagnostic tool.
Depending on the model, this may be required.
Clear the DTCs and test the hydraulic remote for proper operation.
Parts you might need
(6)External Hydraulic Spool Valve / Electric Spool Slice
Generic Part Name
Electric Spool Slice
3797234M6Commonly fits 6400, 6600, 7400 series; requires programming to the tractor upon installation
Mechanical/Standard Spool Valve
3597161M93Commonly fits 300 series like 390, 398, 399
Mechanical/Standard Spool Valve
3904737M1Commonly fits 300 series like 390, 398, 399
Mechanical/Standard Spool Valve
3904736M1Commonly fits 300 series like 390, 398, 399
Spool Valve Repair Kit
3176423M91
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