Massey Ferguson 0B.01.09 – Mid Mount Valve Module: Loader Mid Mount Electro Valve Solenoid High Amp Draw

The tractor's onboard diagnostic system has detected that the electrical current (amperage) being drawn by the solenoid on the mid-mount electro-hydraulic valve is exceeding the safe or expected threshold. A "High Amp Draw" typically indicates a short circuit to ground, a shorted internal solenoid coil, or severely damaged wiring harness insulation allowing power to arc.

• 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

   Visual Wiring Inspection: Inspect the wiring harness running from the mid-mount valve module to the specific loader solenoid. Look for chafing, pinched wires, or melted insulation that could cause a short to the tractor chassis (ground).

2. 2

   Connector Check: Disconnect the electrical connector at the mid-mount electro valve solenoid. Check the pins for corrosion, water ingress, or bent terminals.

3. 3

   Coil Resistance Test: Use a digital multimeter to measure the resistance (Ohms) across the solenoid coil pins. A reading of 0 Ohms or a reading significantly lower than the manufacturer's specification indicates a shorted internal coil, meaning the solenoid itself must be replaced.

4. 4

   Harness Continuity Test: Check for continuity between the power supply wire in the harness and the tractor chassis (ground) to rule out a short in the wiring before condemning the solenoid.

5. 5

   Clear and Retest: Clear the code using the dash interface or a diagnostic tool and actuate the loader joystick to see if the code returns immediately, confirming a hard fault.

1. 1

   Safety First

   Park the tractor on a level surface. Lower the loader bucket completely to the ground to relieve all hydraulic pressure in the system. Turn off the engine and disconnect the negative battery cable.

2. 2

   Locate the Valve

   Locate the mid-mount electro-hydraulic valve block (usually mounted on the right side of the tractor chassis, under or near the cab).

3. 3

   Disconnect

   Unplug the electrical connector from the faulty solenoid identified during your diagnostic checks.

4. 4

   Wiring Repair (If Applicable)

   If the wiring harness was found to be chafed and shorting to ground, repair the damaged section using automotive-grade wire, solder, and heat shrink, or replace that section of the harness.

5. 5

   Solenoid Replacement

   If the solenoid coil is shorted internally, remove the retaining nut holding the solenoid coil to the valve stem.

6. 6

   Remove Coil

   Slide the old solenoid coil off the valve cartridge. (Note: Do not remove the hydraulic cartridge itself unless it is leaking or mechanically stuck, as this will cause fluid loss).

7. 7

   Install New Coil

   Slide the new solenoid coil onto the valve stem and secure it with the retaining nut. Do not overtighten, as this can distort the coil.

8. 8

   Reconnect

   Plug the electrical connector back in, ensuring the weather seal is intact to prevent future water ingress.

9. 9

   Test

   Reconnect the battery, start the tractor, and test the loader functions using the joystick.

10. 10

    Clear Codes

    Clear the stored 0B.01.09 fault code using a compatible diagnostic tool.