Komatsu PC18MR-3, Operation & Maintenance Manual

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PRECAUTIONS FOR MAINTENANCE
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2.8.22 PRECAUTIONS TO BE TAKEN WHEN
USING HIGH-PRESSURE GREASE
TO ADJUST THE TRACK TENSION
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The grease contained in the track tension adjustment device is
pressurized. If the adjustment is not carried out according to the
instructions given in the maintenance section, the grease valve
(1) may be ejected due to the high pressure and this may be
dangerous for the operator.
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When loosening the valve (1) to reduce the track tension, do not
give it more than one turn.
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Keep your face, hands and other body parts away from the
valve (1).
2.8.23 DO NOT REMOVE THE SHOCK ABSORBING SPRING FROM THE
SHOCK ABSORBER UNIT
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The shock absorber unit is provided with a shock absorbing spring with high preload, in order to absorb the im-
pacts of the front idler roller.
Do not attempt to remove the spring, since this may lead to serious accidents and even death.
For any operation on the shock absorber unit, contact your Komatsu Distributor.
2.8.24 HYDRAULIC ACCUMULATOR AND
GAS SPRING
The hydraulic accumulator and gas springs contain high pressure
nitrogen. When performing operations in the accumulator or gas
springs, a careless procedure may result in an explosion causing
serious, and even fatal, injuries. For this reason, keep to the fol-
lowing instructions:
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do not remove the accumulator and the gas spring;
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do not place the accumulator and the gas spring near sparks or
open flames;
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do not drill the accumulator and the gas spring, do not weld or
use oxyhydrogen flames;
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do not hit, crush or crash the accumulator and the gas spring;
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discharge the gas before disposing of the accumulator and the
gas spring. Have this operation carried out only by a Komatsu
Distributor.
RYA00950
RKA12540