Precautions For Operation - Komatsu D61EX-24 Operation & Maintenance Manual

OPERATION MACHINE OPERATIONS AND CONTROLS

PRECAUTIONS FOR OPERATION

WATCH GAUGES
If the hydraulic oil temperature caution lamp lights up during operation, reduce the load and wait for the temper-
ature to go down.
PERMISSIBLE WATER DEPTH
When operating in water, always keep the bottom of carrier roll-
ers (1) above the surface of the water. Also, be careful that the
hydraulically driven cooling fan will not come in contact with
water in order to prevent the breakage of the fan.
After using the machine in the water for a long time, grease the
work equipment and equalizer bar through each grease fitting.
PRECAUTIONS FOR LONG-TIME CONTINUOUS TRAVEL OPERATION
Avoid operating the machine at high speed for a long time, oth-
erwise the temperature of lubricating oil sharply rises, and that
can cause oil leakage from the track rollers or final drive and
lower durability.
If there is no way to avoid operating the machine at high speed
for a long time, stop the machine every one hour for 30 minutes
and let the track rollers and final drive cool off before starting
up the machine again.
PRECAUTIONS WHEN TRAVELING DOWNHILL
USE ENGINE BRAKE
When driving downhill, move the joystick (steering, directional and gear shift lever) into low speed range to run
the engine at low speed and drive down slope by using the engine brake.
Do not move the joystick (steering, directional and gear shift lever) to N (NEUTRAL) position.
When driving downhills of 15 ° or more, use R1 or F1.
REMARK
When the machine travels downhill in straight, you may feel a little sway laterally. This is due to control of
straight-travel correction and it is not a trouble.
BRAKE ON DOWNHILL
When traveling downhill with the engine brake applied, use the brake as necessary to prevent overrun. Overrun
can cause a failure.
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