Massey Ferguson 13.01.09 – TRANS1: Air Brake Solenoid Issue Dyna 6 (TRANS1)

The transmission control system has detected an electrical malfunction (such as an open circuit, short circuit, or abnormal amperage draw) or an operational failure in the solenoid valve responsible for controlling the tractor's pneumatic air brake system.

• 7724S
• 5712SL
• 7722S
• 7722
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 5400 Series
• 5455
• 6400 Series
• 6485
• 6499
• 6600 Series
• 6700 S Series
• 6614
• 6700 S
• 7600 Series
• 7614
• 7615
• 7619
• 7626
• 7700 Series

1. 1

   Inspect the wiring harness leading from the TRANS1 controller to the air brake solenoid for chafed wires, corrosion, or loose pins in the connector

2. 2

   Use a multimeter to test the resistance of the air brake solenoid coil and verify that the TRANS1 module is sending the correct voltage signal to the solenoid when the brakes are applied

3. 3

   Verify that the tractor's air compressor is building adequate pressure and that there are no severe air leaks in the lines leading to the brake valve assembly

4. 4

   Ensure that the brake pedal switches and park brake switches are functioning correctly, as the TRANS1 module relies on these inputs to command the air brake solenoid

1. 1

   Preparation

   Park the tractor on a level surface, turn off the engine, and safely chock the wheels.

2. 2

   Depressurize the System

   Completely drain the air from the tractor's pneumatic brake system to prevent injury when removing the valve.

3. 3

   Locate the Solenoid

   Locate the air brake valve assembly. On many Dyna-6 models, the trailer/air brake control valves are situated on the right-hand hydraulic cover plate or transmission side block.

4. 4

   Disconnect Electricals

   Unplug the electrical wiring harness connector from the faulty air brake solenoid.

5. 5

   Remove the Solenoid

   Unbolt the retaining screws or fittings holding the solenoid to the valve block. Carefully remove the solenoid, ensuring no dirt or debris enters the pneumatic or hydraulic ports.

6. 6

   Install the New Part

   Fit the replacement air brake solenoid valve and tighten the mounting hardware to the manufacturer's torque specifications.

7. 7

   Reconnect and Pressurize

   Reconnect the electrical harness. Start the tractor and allow the air compressor to build system pressure. Listen and test for any air leaks around the new solenoid.

8. 8

   Clear Codes

   Connect a diagnostic tool (such as the Massey Ferguson Wintest software) to clear the 13.01.09 fault code from the TRANS1 module, then test drive the tractor to confirm proper brake operation.