Operation; Check Before Starting Engine, Adjust - Komatsu D475A-5E0 Operation & Maintenance Manual

OPERATION

OPERATION

CHECK BEFORE STARTING ENGINE, ADJUST

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.
Also check for loose wiring, play, and collection of dust at places that reach high temperature.
Leakage of oil or fuel, or accumulation of flammable material around high temperature parts, such as the engine muffler or
turbocharger, may cause 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. Using this position is dangerous because it is easy to slip and you cannot be
seen from the operator's compartment. Always use the handrail and step at the side when getting on or off the machine.
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, hoses
Check for cracks, excessive wear, play in wotk equipment, cylinders, linkage, and hoses. If any abnormality 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 flammable material (dry leaves, twigs,
etc.) around the battery, engine muffler, turbocharger, or other high temperature engine parts. If any dirt or
flammable materials are found, remove them.
For the method of removing dirt from the radiator, see "CLEAN AND CHECK RADIATOR FINS, OIL COOLER
FINS, AFTERCOOLER FINS (PAGE 4-37)".
3. Check for coolant and oil leakage around the engine
Check for oil leakage from the engine and coolant leaks from the cooling system. If any problem is found, repair
it.
4. Check for leakage from fuel line.
Check that there is no leakage of fuel or damage to the hoses and tubes. If any problem is found, perform
repairs.
5. Check for leakage of oil from power train case, final drive case, hydraulic tank, hose, joints
Check that there is no oil leakage. If any abnormality 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.
6. 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.
7. Check for problems in handrails, steps, loose bolts.
If any problem is found, repair it. Tighten any loose bolts.
WARNING
OPERATION
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