Komatsu HM400-1 User Manual

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MAINTENANCE
SERVICE PROCEDURE
MAINTENANCE
SERVICE PROCEDURE
9. Loosen the knob of priming pump (3), then pump the knob and
check that fuel comes out from air bleed plug (2).
10.
Tighten air bleed plug (2).
Tightening torque: 7.8 to 9.8 N·m (0.8 to 1 kgf·m, 5.9 to 7.2 lbft)
11.
Loosen air bleeder (4) of the supply pump.
12.
Pump priming pump (3) (approx. 90 to 100 times) until no more
bubbles come out with the fuel from air bleeder (4), then tighten
air bleeder (4).
Tightening torque: 4.9 to 6.9 N·m (0.5 to 0.7 kgf·m, 3.6 to 5.1
lbft)
13.
Continue pumping until priming pump (3) becomes stiff.
14.
Push the knob of priming pump (3) in and tighten it.
15. After replacing the filter cartridge, start the engine and check for leakage of oil from the filter seal surface. If any
oil leakage is found, check the tightening of the filter cartridge. If oil still leaks, repeat Steps 1 and 2 to remove
the filter cartridge, then check the packing surface for damage or embedded foreign material. If any problem is
found, replace the cartridge with a new part, then repeat Steps 3-15 to install the new cartridge.
CLEAN FUEL TANK STRAINER
1.
Remove cap (1), then wash the strainer and strainer case.
The strainer forms one unit with the cap.
2. After checking and cleaning the strainer, set it in the case, then
tighten the cap.
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Komatsu HM400-1 Specifications

General

Brand	Komatsu
Model	HM400-1
Category	Trucks
Language	English