Massey Ferguson 0A.21.13: External Hydraulic Valve 2 Issue

A malfunction or fault associated with the tractor's second external hydraulic remote spool valve. The underlying condition typically involves restricted oil flow, a pressure regulation failure, an electrical connection problem to the valve, or the valve physically sticking/jamming due to internal wear or debris.

• 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

1. 1

   Inspect the hydraulic fluid for contamination (dirt or debris) and check the hydraulic/transmission filters

2. 2

   Check External Hydraulic Valve 2 for visible fluid leaks, which can reduce system efficiency and cause pressure drops

3. 3

   Test the remote couplers and hoses for damage or blockages, and check if the valve spool is physically sticking or jamming

4. 4

   Inspect the wiring harness and connectors leading to the hydraulic valve for corrosion, damage, or loose connections

1. 1

   Retrieve and Verify

   Use a compatible Massey Ferguson diagnostic tool to confirm code 0A.21.13 is active and clear any historical codes to see if it returns.

2. 2

   Service the Basics

   If the hydraulic oil is contaminated or filters are old, drain the hydraulic fluid and replace the hydraulic and transmission filters.

3. 3

   Clean the Valve

   If the valve is sticking due to debris, remove the spool valve assembly, clean it thoroughly, and inspect for internal scoring or wear.

4. 4

   Replace the Valve

   If cleaning does not resolve the sticking, or if the valve has failed internal seals causing pressure loss, the External Hydraulic Valve 2 assembly must be replaced.

5. 5

   Reassemble and Test

   Reinstall the valve, top off the hydraulic fluid, and test the remote hydraulics with an implement to ensure proper flow and pressure.

6. 6

   Clear Codes

   Use the diagnostic interface to clear the 0A.21.13 code from the system.