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OPERATION
CHECK CENTRAL WARNING LAMP, ALARM BUZZER, MONITOR LAMPS AND METERS
Before starting the engine, set the starting switch in the ON position and check that the machine monitor operates
as follows.
The central warning lamp lights up for 2 seconds, then goes off.
The alarm buzzer sounds for 2 seconds, then stops.
The monitor lamps light up for 2 seconds, then go off for 1 second.
The gearshift indicator displays "88" for 2 seconds, then goes off for 1 second.
The meters start the operations after the system is checked for 3 seconds.
The character display displays "KOMATSU" for 3 seconds.
If the machine monitor does not operate as explained above, there is probably a failure, so please contact your
Komatsu distributor for inspection.
CHECK BRAKING EFFECT
Check if the braking capacity of the parking brake, foot brake, and retarder brake.
If any abnormality is found, ask Komatsu distributor to repair.
CHECK EMERGENCY STEERING
Check manual emergency steering
1. Turn starting switch key to the ON position.
2. Turn emergency steering switch (1) ON, and check that the
steering wheel can be operated.
If the steering wheel cannot be operated, please contact your
Komatsu distributor.
Check auto-emergency steering
1. Turn the starting switch key to the START position and start the
engine.
2. Check that the brake oil pressure caution lamp is OFF, then
pull retarder control lever (2) fully and stop the engine.
3. Turn starting switch key to the ON position.
4. Check that the emergency steering motor is actuated and the
steering can be operated 1 sec. after parking brake switch (3)
is set to the TRAVEL position.
CHECK BACKUP ALARM
1. Turn the engine starting switch to the ON position.
2. Place the gear shift lever in the R position and check that the backup alarm is working.
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OPERATION
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