11. EXPLANATION OF COMPONENTS 13. ROOM LAMP SWITCH This lights up the room lamp. On position: Lights up Position 1: OFF Position 2: Lights up when cab door is opened Position 3: Lights up REMARK The room lamp lights up even when the main switch is OFF, so when leaving the operator’s compartment, turn the switch to position 1 or 2. When operating with the cab door fully open, set the switch to position 1 (OFF). 14. PARKING BRAKE SWITCH WARNING Always apply the parking brake when leaving the machine or parking it. Even if the parking brake switch is turned ON, there is danger until the parking brake pilot lamp lights up, so keep the brake pedal depressed.
This switch operates the parking brake. 1 ON position: The parking brake is applied, and the parking brake pilot lamp lights up. 2 OFF position: The parking brake is released. REMARK If the directional lever is placed in F (FORWARD) or R (REVERSE) with the parking brake applied, the warning lamp will flash and the alarm buzzer will sound. When the starting switch is turned to OFF, the parking brake is automatically applied. Before starting the engine, turn the parking brake switch to ON, then turn it to OFF. The machine does not start when the directional lever is oper- ated with the parking brake applied.
NOTICE Never use the parking brake switch to apply the brakes when traveling, except in an emergency. Apply the parking brake only after the machine has stopped. If the parking brake has been used as an emergency brake when traveling at high speed (near the maximum speed), contact your Komatsu distributor to have the parking brake checked for any abnormality. 2-19