Massey Ferguson 00.00.4E – Dash: Issue With Steering Valve Mounted On Steering Orbitrol Unit. (Dash)

This code indicates an electrical or communication malfunction with the steering valve/sensor that is mounted directly to the steering orbitrol unit (the hydraulic steering control unit at the base of the steering column).

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• 4700
• 5600
• 5700SL
• 6700
• 7600

1. 1

   Wiring and Harness Inspection: Because the Dash logs this code, first check the wiring harness running from the Dash to the steering orbitrol unit. Look for chafed wires, pinched harnesses, or corroded connector pins at the steering valve.

2. 2

   Voltage Check: Verify the output voltage from the Dash to the steering valve. (Note: Fault code 00.00.4F often accompanies this if there is a general output voltage issue from the Dash to the sensors).

3. 3

   Component Testing: Test the solenoid/sensor on the steering valve for proper resistance and continuity to ground.

4. 4

   Hydraulic Verification: Ensure there are no severe hydraulic leaks around the orbitrol unit that could have contaminated the electrical connector.

1. 1

   Preparation

   Park the tractor on a firm, level surface, place the transmission in neutral, engage the parking brake, and shut the engine off. Disconnect the negative battery terminal.

2. 2

   Access the Orbitrol Unit

   Remove the lower steering column cowls/panels in the cab to access the steering orbitrol unit.

3. 3

   Disconnect Electricals

   Carefully unplug the electrical connector from the steering valve mounted on the orbitrol unit. Clean the contacts with electrical contact cleaner if dirt or hydraulic fluid is present.

4. 4

   Valve/Orbitrol Replacement

   If the valve is internally shorted or failed, remove the mounting bolts securing the valve to the orbitrol. Note: On many modern Danfoss/AGCO orbitrols, the electronic steering valve is integrated, and the entire orbitrol unit may need to be replaced if the valve cannot be serviced separately.

5. 5

   Reinstallation

   Install the new valve or orbitrol unit. Always use new O-rings when servicing hydraulic steering components. Torque mounting bolts to OEM specifications.

6. 6

   System Bleed & Calibration

   Reconnect the battery. Start the engine and turn the steering wheel lock-to-lock several times to bleed air from the hydraulic steering circuit. Clear the Dash fault codes using a diagnostic tool and perform a steering valve calibration if required by the tractor's software.