Massey Ferguson A.60.1B: External Hydraulic Valve 6 Issue

The tractor's onboard diagnostic system has detected a malfunction, electrical connection problem, or pressure fault specifically within the circuit of the 6th external hydraulic remote valve (spool valve).

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Code Verification: Use a compatible diagnostic tool or interface device to retrieve and confirm the active 0A.60.1B code.

2. 2

   Electrical Inspection: Check the wiring harness and electrical connector going to External Valve 6. Connection problems are a frequent cause of hydraulic valve DTCs.

3. 3

   Fluid and Filter Check: Ensure the hydraulic fluid (UTTO, e.g., 10W40) is at the correct level and not contaminated. A clogged hydraulic filter can reduce oil flow and cause pressure faults.

4. 4

   Mechanical Linkage/Detent Check: Inspect the spool valve detents and linkages for wear. On models like the 7600 series, worn detents can cause the valve to stick or fail to hold pressure.

5. 5

   Leakage Inspection: Check for visible external leaks around the quick couplers and the valve body itself.

1. 1

   Depressurize the System

   Turn off the tractor, lower all implements to the ground, and relieve hydraulic pressure by cycling the hydraulic levers/controls.

2. 2

   Disconnect Electricals

   Unplug the electrical harness connector from External Hydraulic Valve 6.

3. 3

   Prep for Fluid Loss

   Place a large catch bucket under the valve block, as removing the valve will cause fluid loss. Clean the surrounding area to prevent dirt from entering the hydraulic system.

4. 4

   Remove the Valve

   Disconnect the hydraulic lines/hoses attached to Valve 6. Unbolt the valve assembly from the hydraulic stack or lift cover.

5. 5

   Rebuild or Replace

   Rebuild: If using a repair kit, disassemble the spool valve, replace all internal O-rings and seals, and replace the detents if they are worn (detents can often be sourced separately for ~£100 to avoid buying a whole new valve). Replace: If the internal bore is scored, install a completely new external hydraulic valve assembly.

6. 6

   Reinstallation

   Bolt the new/rebuilt valve back into the stack, reconnect the hydraulic lines, and plug in the electrical connector.

7. 7

   System Bleed and Test

   Top off the hydraulic fluid with OEM UTTO fluid. Start the tractor and cycle Valve 6 multiple times to bleed air from the system. Check for leaks and use your diagnostic tool to clear the 0A.60.1B code.