Operation; Check Before Starting Engine, Adjust - Komatsu D155A-6 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.
If the machine is at an angle, make it level before checking.
Before starting the engine, look around the machine and under the machine to check for loose nut 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 collection of dust at places which reach high temperatures.
Always carry out the items in this section before starting the engine each day.
1. Check for damage, wear, play in work equipment, cylinders, linkage, 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 dirt and dust from around engine, battery radiator.
Check if there is any dirt or dust accumulated around the engine or radiator. Check also if there is any flammable
material (dead leaves, twigs, grass, etc.) accumulated around the battery or high temperature engine parts,
such as the engine muffler or turbocharger. Remove all such dirt or flammable material.
3. Check for leakage of water or oil around engine
Check that there is no oil leakage from the engine or coolant leakage 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, carry out
repairs.
5. Check for oil leakage from power train case, final drive case, hydraulic tank, hose, joint.
Check that there is no 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.
6. Check of the undercarriage parts
Check track shoe, sprocket, idler, guard for damage, wear, loose bolts, or leakage of oil from rollers, etc.
Repair them if any trouble is found.
If any damage, wear, or oil leakage is found, repair the problem and tighten the bolts.
WARNING
OPERATION
3 - 95