Komatsu D155AX-8E0, Operation & Maintenance Manual

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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.
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WARNING
• Any combustible materials accumulated around the exhaust pipe, aftertreatment devices, turbo-
charger, 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.
• Do not get on or off the machine from the rear. Since the floor is slippery and not seen from the
operator seat, it is dangerous to get on or off there. Always use the handrail and step at the side
when getting on or off the machine.
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 materials (dry
leaves, twigs, etc.) around the battery, exhaust pipe, aftertreatment devices, 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 air.
Check for oil leakage from the engine, coolant leakage from the cooling system, and air leakage from the
air intake 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, hoses, and joints for leakage. If any problem is found, ask your Komatsu
distributor for repair.
6.
Check the power train case, final drive case, 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.
Check for leakage of oil from the undercover. Check the ground for traces of oil leakage.
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 OPERATION
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