Parking Brake Operational Check
49X mm 42.05.001
- With the engine running, and air pressure at cut-out pressure, set the parking brake.
- Put the vehicle in the lowest gear and gently attempt to move it forward. The vehicle should not move. If the vehicle moves, the parking brakes are not operating correctly and must be repaired before the vehicle is returned to service. See of the 47X and 49X Workshop Manual for repair procedures.
Caution: Perform the following check in a clear safe area. If the parking brakes fail to hold the vehicle, personal injury or property damage may result.
Important: This procedure should be performed prior to lubrication of the brake components.
Note: