Massey Ferguson A.11.1E – Dash / Mid Mount Valve Module: External Hydraulic Valve 1 Issue

This indicates a malfunction in the first external hydraulic remote valve circuit. The underlying condition is typically related to an issue with the spool position sensor value, a lack of communication with the valve module, or a physical restriction/pressure issue within the valve itself.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Check the UTTO hydraulic fluid level and condition (look for dark, burnt, or milky fluid indicating water contamination).

2. 2

   Inspect the hydraulic filter for partial blockages that could restrict flow to the system.

3. 3

   Perform a pressure test with a hydraulic gauge to pinpoint whether the issue is a failing pump, a relief valve set too low, or a restriction in Valve 1.

4. 4

   Inspect the wiring harness and electrical connectors running from the dash to the Mid Mount Valve Module and External Valve 1 for communication or sensor issues.

5. 5

   Visually inspect the external control valve, quick couplers, and hoses for external leaks or damaged seals.

1. 1

   Relieve Pressure

   Turn off the tractor and relieve all hydraulic system pressure before starting work.

2. 2

   Drain/Flush

   If the fluid was contaminated, drain the hydraulic fluid and replace the hydraulic filter.

3. 3

   Disconnect Valve

   Disconnect the electrical connectors attached to External Hydraulic Valve 1.

4. 4

   Remove Hardware

   Remove the bolts securing the valve to the base plate or hydraulic lift cover.

5. 5

   Detach Lines

   Carefully detach the hydraulic lines, noting their positions, and remove the faulty control valve.

6. 6

   Install New Valve

   Fit the new control valve to the base plate, ensuring that the standpipe and O-rings are correctly seated into the hydraulic pump/lift cover.

7. 7

   Reassemble

   Secure the valve with the mounting bolts and reconnect all hydraulic lines and electrical connectors.

8. 8

   Refill & Bleed

   Refill the system with clean OEM-approved UTTO hydraulic fluid. Run the tractor to warm up the fluid, operate the valve to bleed any air from the system, and check for leaks.

9. 9

   Clear Code

   Use a compatible diagnostic tool to clear the 0A.11.1E DTC from the system.