Komatsu HM400-5, Руководство по эксплуатации и техническому обслуживанию

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2.
Put a container to receive the water under drain hose (4).
3.
Loosen drain valve (3) and drain the water.
4.
When fuel starts draining from drain hose (4), tighten valve (3) immediately.
REMARK
• If transparent cup (2) is dirty or it is difficult to see the inside, clean transparent cup (2) when replacing fuel
prefilter cartridge (1).
• When the drain valve (3) has been removed during the cleaning operation, coat O-ring with grease and
tighten until it contacts the bottom.
METHOD FOR ADJUSTING DRAIN VALVE
1.
Place a container under the fuel prefilter cartridge to receive the fuel.
2.
Loosen drain valve (1) and drain water and sediments
from transparent cup (2), and also drain all the fuel from fil-
ter cartridge (3).
3.
Check that nothing more comes out from drain hose (4),
then remove drain valve (1).
4.
Apply a suitable amount of grease to O-ring (5).
When doing this, be careful not to allow the grease to ad-
here to water drain port (6) and threaded portion (7) of the
drain valve.
5.
Tighten drain valve (1) by hand until it contacts the bottom
of transparent cup (2).
6.
Remove the fuel container.
7.
Fill the fuel tank with fuel.
8.
Bleed air from the fuel system.
For the air bleeding procedure of the fuel circuit, see
“PROCEDURES FOR BLEEDING AIR FROM FUEL CIRCUIT (3-248)”.
METHOD FOR CHECKING OIL LEVEL IN HYDRAULIC TANK, ADDING OIL
k k
WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury.
Accordingly, wait until they have cooled down before starting the work.
• When removing the oil filler cap, the oil may spout out. Turn it slowly to release the internal pres-
sure, then remove it.
MACHINE OPERATIONS AND CONTROLS OPERATION
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