Komatsu D31EX-21, Руководство по эксплуатации и техническому обслуживанию, Страница: 113 / 256

OPERATION
OPERATION
3-61
OPERATION 3
CHECK BEFORE STARTING ENGINE, ADJUST 3
WALK-AROUND CHECK 3
Before starting the engine, look around the machine and under the machine to check for loose nuts or bolts, or
leakage of oil, fuel, or coolant, and check the condition of the work equipment and hydraulic system. Check also
for loose wiring, play, and accumulation of dust in places which reach high temperatures.
WARNING
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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.
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Do not get on or off the machine from the rear. The footing is usually slippery and can hardly be seen
well from the operator's seat. Be sure to get on and off the machine at the machine front in the case of
D31PX and D37PX and D39EX and D39PX and at the machine sides in the case of D31EX and D37EX,
using the handrails and steps in either case.
If the machine is at an angle, reposition it level before checking.
Carry out the following inspections and cleaning 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 the dirt from around the engine, battery, and radiator.
Check that there is no dirt accumulated around the engine or radiator. Check also that there is no flammable
material (dry leaves, twigs, etc.) around the battery, engine muffler, turbocharger, or other high temperature
parts of the engine. If any dirt or flammable materials are found, remove them.
3. Check for leakage of water or oil around engine.
Check that there is no leakage of oil from the engine or leakage of coolant from the cooling system. If any
abnormality is found, repair it.
4. Check that there is no leakage of oil from the HST pump, final drive, hydraulic tank, hoses, and joints.
If any abnormality is found, repair the leaks.
When checking for oil leakage, check for signs of oil leaking from the undercover or signs of oil dripping on the
ground.
5. Check the undercarriage (track, sprocket, idler, guard) for damage, wear, loose bolts, or leakage of oil from
rollers.
If any abnormality is found, repair it.