SYSTEM / Control System Parking Brake Operation Control (Emergency) Purpose: The parking brake operation control lights the brake oil low level indicator on the monitor unit and spplies the parking brake when the brake oil level is below the lower limit. Operation: 1. The brake oil level sensor is turned ON when the brake oil level in the brake oil tank is below the lower limit. 2. The monitor unit lights the brake oil low level indicator and the stop indicator. 3. Emergency parking brake relay (5) is excited and the parking brake is applied when the signal from the brake oil level sensor is input to the HST control unit. 4. The monitor unit lights the HST warning indicator and the parking brake indicator.
T2-1-14
NOTE: As for the operation circuit of the parking brake, refer to SYSTEM/Hydraulic System/ Brake Circuit.
