Massey Ferguson A.43.2A: External Hydraulic Valve 4 Issue

Specific documentation for A.43.2A was not found. The issue relates to External Hydraulic Valve 4. Related codes (18047, 10001) indicate voltage too low for EHR 4 lever position or a valve solenoid open circuit/shorted to ground.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 6400 series
• 6600 series
• 7400 series
• 7600 series

1. 1

   Check hydraulic fluid (UTTO) level and condition for dark color, burnt smell, or milky appearance (water contamination)

2. 2

   Test system pressure with a hydraulic gauge to pinpoint whether the issue is caused by the pump, the valve, or a restriction

3. 3

   Inspect the solenoid connector and check the wiring harness for rub points

4. 4

   Test the coil resistance and verify ground integrity

1. 1

   Unstick the Valve

   If a control valve is physically stuck, you can sometimes release it by manually moving the pump control valve lever back and forth.

2. 2

   Address Internal Leaks

   If internal pressure is escaping (causing symptoms like a dropping linkage), disassemble the system to replace worn lift cylinder seals, damaged O-rings, leaking control valves, or faulty check valves.

3. 3

   Overhaul

   For complete failures, remove the hydraulic pump and control valve, clean or overhaul the components, and reinstall them.