Massey Ferguson A.2X.1E – Dash display / Mid Mount Valve Module: External Hydraulic Valve 2 Issue

Indicates a malfunction in the circuit or mechanical operation of the second auxiliary remote hydraulic spool valve. This is typically triggered by an electrical connection problem to the valve, an out-of-range spool position sensor value, or mechanical sticking/jamming of the valve spool that prevents it from directing hydraulic fluid properly.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 4700 Series
• 5700SL Series
• 7700 Series

1. 1

   Check the UTTO fluid level and condition for a milky appearance or burnt smell, and inspect for a blocked hydraulic/transmission filter.

2. 2

   Inspect External Valve 2 (Bosch Rexroth SB23) for external fluid leaks.

3. 3

   Inspect the wiring harness and electrical connectors plugging into Valve 2 for corrosion, broken wires, or loose pins.

4. 4

   Use a diagnostic tool to read the live data for the Valve 2 spool position sensor to see if it is registering movement.

5. 5

   Hook a hydraulic pressure gauge to the rear remote couplers to verify if the issue is isolated to Valve 2 or if there is a system-wide low-pressure issue.

1. 1

   Relieve Pressure

   Turn off the tractor and cycle the hydraulic levers/joysticks to relieve all residual pressure in the system.

2. 2

   Drain/Flush

   If the hydraulic fluid is degraded, drain the fluid and replace the hydraulic filter before installing new valve components.

3. 3

   Disconnect Valve 2

   Disconnect the electrical connectors from the Valve 2 segment. Disconnect and cap the hydraulic lines to prevent dirt from entering the system.

4. 4

   Remove the Valve Segment

   Unbolt the tie-rods holding the hydraulic valve block together and carefully slide out the affected Valve 2 segment (Bosch SB23).

5. 5

   Reseal / Rebuild

   Use a Spool Valve Replacement/Reseal Kit. Remove the snap rings at the ends of the spool, slide the spool out, and replace all internal O-rings and seals. Extreme care must be taken not to score the spool or introduce dirt.

6. 6

   Reassembly

   Lubricate the new seals with clean hydraulic fluid, reinsert the spool, and reassemble the valve block. Torque the block tie-rods to the manufacturer's specifications.

7. 7

   Bleed and Test

   Reconnect all lines and electrical harnesses. Refill the tractor with OEM-spec UTTO fluid. Start the engine and cycle Valve 2 multiple times to bleed air from the system. Clear the 0A.2X.1E code with a diagnostic tool.