For 1990-2009 cars only
Removal Procedure
- Block the wheels.
- Drain all of the air reservoirs. Refer to Air Brake Reservoir Draining.
- Mark the air lines and connections in order to aid in installation.
- Disconnect the park brake indicator switch electrical connector (1).
- Disconnect the rear axle differential lock switch electrical connector (2), if equipped.
- Disconnect the air lines from the air brake supply manifold (1). Refer to Hose and Line Replacement - Nylon Push-In Type Fitting.
- Remove the 2 air brake supply manifold nuts (2).
- From inside the vehicle, disconnect the park brake control valve air lines (1) and the air brake pressure gage air lines from the air brake supply manifold. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting.
- Remove the air brake supply manifold.
Note: Do not disconnect the air lines from the air brake application valve.
Installation Procedure
- From inside the vehicle, connect the park brake control valve air lines (1) and the air brake pressure gage air lines to the air brake supply manifold. Refer to Hose and Line Replacement - Nylon Push-In Type Fitting.
- Install the air brake supply manifold.
- Install the 2 air brake supply manifold nuts (2).
- Connect the air lines to the air brake supply manifold (1). Refer to Hose and Line Replacement - Nylon Push-In Type Fitting.
- Connect the park brake indicator switch electrical connector (1).
- Connect the rear axle differential lock switch electrical connector (2), if equipped.
- Start the engine.
- Charge the system air pressure to the governor cut-out point.
- Stop the engine.
- Check for air leaks using a soap solution.
- Remove the wheel blocks.
Caution: Refer to Fastener Caution in the Preface section.
Tighten
Tighten the nuts to 5 N·m (44 lb in).
