Komatsu PC350LC-8, Operation & Maintenance Manual

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SAFETY MAINTENANCE INFORMATION
SAFETY
2-40
REMOVING BATTERY TERMINALS
When repairing or welding the electrical system, wait for approx. one minute after turning off the engine starting
switch key, and then disconnect the negative (-) terminal of the battery to stop the flow of electricity.
SAFETY FIRST WHEN USING HIGH-PRESSURE GREASE TO ADJUST TRACK TENSION
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Grease is pumped into the track tension adjustment sys-
tem under high pressure.
If the specified procedure for maintenance is not followed
when making adjustment, grease drain plug (1) may fly out
and cause serious injury or property damage.
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When loosening grease drain plug (1) to loosen the track
tension, never loosen it more than one turn. Loosen the
grease drain plug slowly.
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Never put your face, hands, feet, or any other part of your
body close to grease drain plug (1).
DO NOT DISASSEMBLE RECOIL SPRINGS
Never attempt to disassemble the recoils spring assembly. It
contains a spring under high pressure which serves as a shock
absorber for the idler. If it is disassembled by mistake, the
spring will fly out and cause serious injury. When it becomes
necessary to disassemble it, ask your Komatsu distributor to do
the work.
SAFETY RULES FOR HIGH-PRESSURE OIL
The hydraulic system is always under internal pressure. When inspecting or replacing piping or hoses, always
check that the pressure in the hydraulic circuit has been released. If the circuit is still under pressure, it will lead to
serious injury, so always do as follows.
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Release the pressure in the hydraulic circuit. For details, see “METHOD OF RELEASING PRESSURE IN
HYDRAULIC CIRCUIT (4-80)“. Do not carry out any inspection or replacement work when the hydraulic sys-
tem is under pressure.
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If there is any leakage from the piping or hoses, the surrounding area will be wet, so check for cracks in the
piping and hoses and for swelling in the hoses.
When carry out inspection, wear safety glasses and leather gloves.