Komatsu PW98MR-10, Operation & Maintenance Manual

Page: 193 / 446

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.
k k
WARNING
• When performing checks or maintenance of the inside of the engine hood or dirt cover, fully open
the hood or cover and be sure to fix it with the stopper.
• Accumulation of flammable material or leakage of fuel or oil around the high temperature parts such
as the engine muffler or battery may cause fire.
Check carefully, and if any problem is found, repair it or contact your Komatsu distributor.
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 dust and dirt from the areas 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, or other high tempera-
ture engine parts. If any dirt or combustible materials are
found, remove them.
In particular, check between muffler (1) and muffler cover
(2) carefully.
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,
carry out the necessary repair operations.
4.
Check the fuel line for leakage.
Check for leakage of fuel or damage to the hoses and tubes. If any problem is found, carry out the neces-
sary repair operations.
5.
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.
6.
Check the components of the undercarriage and, in particular, carefully check the conditions of tyres and
wheel rims.
k k
WARNING
Incorrect handling of wheels and tyres can result in serious injury or death.
Never attempt to repair damaged items.
Before any attempt is made to remove the road wheels the tyres must be fully deflated. On machines fitted
with twin wheel assemblies a valve extension is fitted to the inner wheel to facilitate deflation. The extension
should always be refitted following disassembly.
OPERATION MACHINE OPERATIONS AND CONTROLS
3-125
WENAM00061