Machine Operations And Controls; Checks And Adjustment Before Starting Engine - Komatsu PC290LC-11 Operation & Maintenance Manual

OPERATION

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.
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 devices, turbocharger, or other high tempera-
ture engine parts. If any dirt or combustible materials are found, remove them.
For removal of dirt from the radiator, see "METHOD FOR CHECKING AND CLEANING RADIATOR FINS,
OIL COOLER FINS, AFTERCOOLER FINS, FUEL COOLER FINS, AND AIR CONDITIONER CONDENS-
ER FINS (4-50)".
3.
Check around the engine for coolant and oil leakage.
Check for oil 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.
Remove dirt and check DEF line for leakage.
Check for dirt accumulated around the DEF tank and clean blue DEF tank filler cap and surrounding area.
Check DEF tank, pump, injector, and hoses and their connections for leakage. If any problem is found, ask
your Komatsu distributor for repair.
6.
Check the hydraulic equipment, 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.
7.
Check the undercarriage (track, sprocket, idler, guard) for damage, wear, loose bolts, or leakage of oil from
rollers.
If any problem is found, repair it.
8.
Check the handrails and steps for problems and check the bolts for looseness.
If any problem is found, repair it. Tighten any loose bolts.
9.
Check the gauges and monitor for problem.
Check for problem in the gauges and monitor in the operator's cab. If any problem is found, replace the
part. Clean off any dirt on the surface.
MACHINE OPERATIONS AND CONTROLS
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WARNING
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