TM 10-3930-659-10 2-2.  CONTROLS AND INDICATORS (Con’t). KEY CONTROL OR INDICATOR FUNCTION 40 Parking Brake Pedal Applies forklift truck parking brake. 41 Parking Brake Releases forklift truck parking brake. Release Lever 42 Steering Wheel Steers vehicle. KEY CONTROL OR INDICATOR FUNCTION 43 Coolant Recovery Indicates the coolant level visually. Tank 44 110-volt AC Connects 110-volt AC power source for vehicle Receptacle winterization kit. 45 Battery Disconnect Disconnects batteries from vehicle electrical Switch system. 46 Slave Receptacle Accepts the slave starting cables to aid in slave starting the vehicle. TA704477 2-7