Machine Operations And Controls; Checks And Adjustment Before Starting Engine - Komatsu WA600-8 Operation & Maintenance Manual

MACHINE OPERATIONS AND CONTROLS

MACHINE OPERATIONS AND CONTROLS

CHECKS AND ADJUSTMENT BEFORE STARTING ENGINE

METHOD FOR WALK-AROUND CHECK
Before starting the engine, walk around the machine and look at the underside of chassis for anything unusual
like loose bolts and nuts, leakage of fuel, oil and coolant. Also check the condition of the work equipment and
the hydraulic system.
Check also for loose wiring, play, and accumulation of dust in places that get very hot and are exposed to ex-
tremely high temperatures.
Any combustible materials accumulated around the exhaust pipe, aftertreatment devices, turbocharger,
or other high temperature engine parts or the battery, and leakage of fuel or oil will cause the machine
to catch fire.
Check carefully, and if any abnormality is found, repair it or contact your Komatsu distributor.
If the machine is inclining, make it level before checking.
Always perform the following inspections and cleaning every day before starting engine for the day's work.
1.
Check for damage, wear, play in work equipment, cylinders, linkage, and hoses.
Check for cracks, excessive wear, play in work equipment, cylinders, linkage, and hoses. If any problem is
found, repair it.
2.
Remove dirt and debris from around the engine, battery, and radiator.
Check for dirt accumulated around the engine and radiator. Also check for combustible material (dry leaves,
twigs, etc.) around the battery, exhaust pipe, aftertreatment device, turbocharger, or other high temperature
engine parts. If any dirt or combustible materials are found, remove them.
3.
Check around the engine for leakage of coolant, oil, and exhaust gas.
Check for oil leakage or exhaust gas leakage from the engine and coolant leakage from the cooling system.
If any problem is found, repair it.
4.
Check the fuel line for leakage.
Check for leakage of fuel or damage to the hoses and tubes. If any problem is found, repair it.
5.
Check DEF line for leakage.
Check DEF tank, pump, injector, and hoses and their connections for leakage. If any problem is found, ask
your Komatsu distributor for repair.
6.
Remove dirt from around the aftertreatment devices.
Check for dirt and combustible materials (dry leaves, twigs, etc.) accumulated around the aftertreatment de-
vices. If any dirt or combustible materials are found, remove them.
7.
Check around the aftertreatment devices for exhaust gas leakage.
Check the pipe connecting the turbocharger to the aftertreatment devices and also connections of the after-
treatment devices for leakage of exhaust gas (and deposition of soot).
If any problem is found, ask your Komatsu distributor for repair.
8.
Check KCCV piping for gas leakage and oil leakage.
Check the pipes (3 pieces) between the KCCV filter, turbocharger, oil pan, and cylinder head for oozing oil.
If any problem is found, ask your Komatsu distributor for repair.
9.
Check around SCR for exhaust gas leakage.
Check the pipe between the KDPF and SCR and also the SCR connections for leakage of exhaust gas
(and urea deposit). If any problem is found, ask your Komatsu distributor for repair.
10. Check transmission case, axle, hydraulic tank, hoses, and joints for oil leakage.
Check for oil leakage. If any problem is found, repair the place where the oil is leaking.
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WARNING
OPERATION