NOTICE
If the tires are used when the tire inflation pressure is less than the value given in the table above,
the rim may be damaged.
Maintain the tire inflation pressure within0 to +30 kPa {0 to +0.3 kg/cm
2
}.
3.
Check the tires and the rims for wear or damage, and check the hub bolts for looseness.
METHOD FOR CHECKING MACHINE MONITOR
1.
Turn the starting switch to ON position (B).
2.
Check that all the monitors, gauges and centralized warn-
ing lamp light up for approximately 2 seconds, and check
that the alarm buzzer sounds for approximately 2 seconds.
Check that the engine tachometer swings.
If the lamps do not light up, there may be a failure or wire
breakage in the machine monitor. Ask your Komatsu dis-
tributor for inspection.
METHOD FOR CHECKING BRAKE
Check that the parking brake, foot brake, and retarder brake work sufficiently.
If any abnormality is found, ask Komatsu distributor to repair.
METHOD FOR CHECKING SECONDARY BRAKE PERFORMANCE
WARNING
The machine may start moving during the checking of the secondary brake performance. As a result,
serious personal injury or death may occur. Observe the following.
• Select the flat and large area which gives the machine an enough braking distance to stop securely.
• If the machine starts moving during the inspection of the secondary brake performance, immediate-
ly reduce the engine speed, set the gear shift lever to NEUTRAL position (N), set the parking brake
to “PARKING” position, and stop the machine.
• While the dump body float caution lamp is being lit and the shift indicator is displaying “L”, per-
forming the inspection may damage the inside of the transmission.
Before performing the inspection, lower the dump body so that it sits securely. Check that the dump
body float caution lamp is not lit, set the gear shift lever to D position, and check that the shift indi-
cator displays “2”.
REMARK
The secondary brake actuates both the front brake and the parking brake at the same time.
1.
Park the machine on a flat and large area.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-149
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