Removal Procedure
- Block the wheels.
- Drain all of the air reservoirs. Refer to
Air Brake Reservoir Draining
.
Important: Tag the air lines for later installation.
- Remove the air lines at the differential lock pressure protection valve. Refer to
Hose and Line Replacement - Nylon Push-In Type Fitting
.
- Remove the following components from the differential lock pressure protection valve:
- Remove the differential lock pressure protection valve at the brake pedal bracket.
- Inspect the air lines for the following conditions:
- Repair or replace the air lines as needed. Refer to
Hose and Line Replacement - Nylon Push-In Type Fitting
.
Installation Procedure
- Install the differential lock pressure protection valve at the brake pedal bracket.
Notice: Refer to Fastener Notice in the Preface section.
- Install the following components to the differential lock pressure protection valve:
Tighten
Tighten the differential lock pressure protection valve nuts to 12 N·m (106 lb in).
- Install the air lines at the differential lock pressure protection valve. Refer to
Hose and Line Replacement - Nylon Push-In Type Fitting
.
- Start the engine. Charge the system to the air compressor governor cutout point.
- Stop the engine.
- Inspect for air leaks using a soap solution.
- Remove the wheel blocks.