Komatsu HM400-5, Руководство по эксплуатации и техническому обслуживанию

Страница: 210 / 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
• Always hang the warning tag from the gear shift lever.
• Any combustible materials accumulated around the exhaust pipe, aftertreatment devices, turbo-
charger, or other high temperature engine parts or dump body (equipped with dump body heating
specifications) or the battery, and leakage of fuel or oil will cause the machine to catch fire.
Check carefully, and if any problem is found, repair and clean it or contact your Komatsu distribu-
tor.
• The lamps may become hot. Wait until they have cooled down before starting any work.
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 the dump body, frame, tires, cylinders, linkage, and hoses for cracks or excessive wear or play.
Check the dump body, frame, tires, cylinders, linkage, and hoses for cracks or excessive wear or play, and
perform repairs if any problem is found.
2.
Remove dirt and debris from around the engine, battery, radiator, and aftercooler.
Check that there is no dirt or dust accumulated around the engine, radiator or aftercooler. Check also that
there is no combustible material (dry leaves, twigs, etc.) accumulated around the battery, or muffler, turbo-
charger, or other high temperature parts of the engine or dump body (equipped with dump body heating
specification). Remove any dirt or combustible materials that are found.
For the method to remove dirt from the radiator and aftercooler, see “METHOD FOR CHECKING AND
CLEANING RADIATOR FINS, AFTERCOOLER FINS, AND AIR CONDITIONER CONDENSER FINS
(4-53)”.
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,
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, and hoses and their connections for leakage. If any problem is found, ask
your Komatsu distributor for repair.
6.
Removal dirt from around the aftertreatment devices.
Check for dirt and combustible materials (dry leaves, twigs, etc.) accumulated around the aftertreatment de-
vices. If any dirt or combustible materials are found, remove them.
7.
Check around the aftertreatment devices for exhaust gas leakage.
Check the pipe connecting the turbocharger to the aftertreatment devices and also KDPF connections for
leakage of exhaust gas (and deposition of soot).
If any problem is found, ask your Komatsu distributor for repair.
MACHINE OPERATIONS AND CONTROLS OPERATION
3-150