Removal Procedure
- Apply the parking brake.
- Block the wheels.
- Drain all the reservoirs. Refer to
Air Brake Reservoir Draining
.
- Disconnect the wiring harness connector.
- Remove the low air pressure switch.
Installation Procedure
Notice: Refer to Fastener Notice in the Preface section.
- Install the low air pressure switch.
Tighten
Tighten the low air pressure switch to 12 N·m (106 lb in).
- Connect the wiring harness connector.
- Start the engine.
- Charge the system air pressure to the governor cut-out point.
- Inspect for leaks with a soap solution around the low air pressure switch. Leakage is not permissible.
- Inspect for proper operation. Refer to
Low Air Pressure Switch Operational Check
.
- Remove the wheel blocks.