11. EXPLANATION OF COMPONENTS 12. EMERGENCY STEERING SWITCH This switch is used to actuate the emergency steering pump. When the switch is pressed, the emergency pump is actuated to make it possible to operate the steering. When the switch is ON, the pilot lamp (red) inside the switch lights up. The emergency steering pump can be used for a maximum of 90 seconds. When the emergency steering is being used, keep the travel speed to a maximum of 5 km/h (3.1 MPH). When the emergency steering is actuated, it is possible to use the dump lever to raise the dump body. Automatic emergency steering will be activated automatically in the following cases:
Steering pump failure Engine stoppage during operation If the auto emergency steering is actuated, stop the machine swiftly and carry out inspection. If the key switch is turned ON when the machine is stopped and the parking brake switch is OFF, the auto emergency steering is actuated after 1 second, so turn the parking brake switch to the ON (PARKING) position. 13. EMERGENCY BRAKE LEVER This lever is used to actuate the emergency brake. APPLIED: Emergency brake actuated TRAVEL: Emergency brake released If the pressure in the air tank drops below 0.22 MPa (2.2 kgf/cm 2 , 31.24 PSI) the emergency brake is automatically applied.
If the emergency brake is applied because of a failure in the air system, the central warning lamp will flash and the alarm buzzer will sound. For details of the method of releasing the brake if this happens, see “16.2.3 RELEASE METHOD WHEN PARKING BRAKE AND EMER- GENCY BRAKE HAVE BEEN ACTIVATED IN EMERGENCY” 14. SHIFT LIMITER SWITCH This is used to limit the maximum speed range when the transmission shift lever is in the D or L range. i position: D range – F2 - F7 L range – F1 - F2 k position: D range – F2 - F6 L range – F1 AE617390 2-22