Massey Ferguson 0A.4X.28: External Hydraulic Valve 4 Issue
Issue description
Fault, malfunction, or connection problem specifically isolated to the 4th external hydraulic remote 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 Massey Ferguson diagnostic tool or interface device to confirm the active code and check for any related codes.
Perform a visual and multimeter inspection of the wiring harness, pins, and electrical connectors leading to External Hydraulic Valve 4 to rule out a short, open circuit, or corrosion.
Refer to the specific tractor's OEM service manual to interpret the exact voltage/resistance values expected at the valve.
Parts you might need
(1)External Hydraulic Valve Assembly (Valve 4) / Hydraulic Valve Solenoid
Part numbers will vary heavily depending on the specific series (e.g., 4700 vs. 7700 series) and whether the tractor is equipped with mechanical or electro-hydraulic remotes.
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