Removal Procedure
- Block the wheels.
- Drain all of the air reservoirs. Refer to
Air Brake Reservoir Draining
.
Important: Tag and label the air lines for later installation.
- Remove the air lines from the park control valve (cab mounted). Refer to
Hose and Line Replacement - Nylon Push-In Type Fitting
.
- Remove the pin.
- Remove the knob.
- Remove the park control valve (cab mounted) bolt/screw.
- Remove the park control valve (cab mounted).
- Inspect the air lines for the following conditions:
- Repair or replace the lines as necessary.
Installation Procedure
- Install the park control valve (cab mounted).
Notice: Refer to Fastener Notice in the Preface section.
- Install the park control valve (cab mounted) bolt/screw.
Tighten
Tighten the park control valve (cab mounted) bolt/screw to 3 N·m (30 lb in).
- Install the knob.
- Install the pin.
- Install the air lines to the park control valve (cab mounted).
- Perform the air leakage test. Refer to
Air Brake Park Control Valve Leakage Test
.
- Perform the operational test. Refer to
Parking Control Valve Operational Check
.
- Remove the wheel blocks.