Komatsu PC18MR-3, Operation & Maintenance Manual

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PRECAUTIONS FOR MAINTENANCE
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2.8.8 USE OF THE ENGINE DURING MAINTENANCE
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During maintenance operations, make the engine run only when indispensable. If it is necessary to have the en-
gine running (for example, to wash the cooling circuit or to check the functionality of the alternator), an operator
should constantly remain in the cab, in order to be able to stop the engine whenever necessary.
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During maintenance operations with running engine, do not release the control locking devices from the “locked”
position or change the position of the travel levers.
Maintenance staff must not move any control lever.
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When carrying out maintenance operations, do not touch the moving parts of the machine and avoid wearing
large and loose clothes.
2.8.9 PERIODICAL CHANGE OF THE PARTS THAT ARE CRITICAL FOR
SAFETY
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To ensure that the machine can be used as long as possible in total safety, it is necessary to add oil and carry
out the required maintenance operations at regular intervals. To increase safety, safety-related components like
pipes and belts must be periodically changed.
For the replacement of the parts that are critical for safety, see "4.7 PERIODICAL CHANGE OF SAFETY-RE-
LATED COMPONENTS".
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The material used for making these components naturally changes over time and prolonged use may cause de-
terioration, wear and excessive stress, with the consequent risk of breakages thay may lead to serious injury and
property damage. It is difficult to evaluate the conditions of these components through an external check or
based on the operator's feelings during work, therefore it is advisable to change them according to the recom-
mended intervals.
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If any defect should be found out, change or repair the components that are critical for safety even before the
end of the recommended intervals.
2.8.10 REPAIR WELDS
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Welding operations must be always carried out by a qualified welder, in a place where suitable equipment is
available. Welding operations may be the cause of fire and electrocution, therefore do not allow unauthorized
personnel to make welds.
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Before starting welding work, turn the starting switch to the OFF position, wait over one minute, then switch off
the battery disconnect switch and take out the battery disconnect switch key.