Komatsu WA500-6H, Operation & Maintenance Manual

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3.3 Operation Operation
3-90
WA500-6H – VEAM430100
3.3 Operation
3.3.1 Check before starting engine, adjust
Walk-around check
Before starting the engine, walk around the machine and look to
the underside of chassis for anything unusual like looseness of
the bolts and nuts, leakage of fuel, oil and cooling water. Also
check the condition of the work equipment and the hydraulic
system.
Check also for loose wiring, play, and collection of dust at places
which reach high temperature.
WARNING
z Always hang a warning sign on the work equipment control
levers.
z Remove any flammable materials from around the battery or
engine muffler, turbocharger, or other high temperature
engine parts. Leakage of fuel or oil will cause the machine to
catch fire. Check carefully, and be sure to repair any abnor-
malities, or please contact your KOMATSU distributor.
z Always repair any damage to the handrails and steps, and
tighten any loose bolts. Failure to do this may cause workers
to fall and suffer serious personal injury.
If the machine is at an angle, reposition it level before checking.
Carry out the following inspections and cleanings every day
before starting the engine for the day´s work.
1. Check for damage, wear, play in work equipment, cylinders,
linkage and hoses.
Check that there are no cracks, excessive wear, or play in
the work equipment, cylinders, linkage or hoses. If any
abnormality is found, repair it.
2. Remove dirt and dust from around engine, battery and radia-
tor.
Check if there is any dirt or dust accumulated around the
engine or radiator. Check also if there is any flammable
material (dead leaves, twigs, etc.) accumulated around the
battery or high temperature engine parts, such as the engine
muffler or turbocharger. Remove all such dirt or flammable
material.
3. Check for coolant or oil leakage around engine.
Check that there is no oil leakage from the engine or coolant
leakage from the cooling system. If any abnormality is found,
repair it.