Komatsu HB215LC-3, Operation & Maintenance Manual

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7.
Turn the valve (1) at the lower part of the fuel tank to
OPEN position (O).
8.
After completing the replacement of filter cartridge (2),
bleed air from the circuit.
METHOD FOR STARTING ENGINE USING FUEL FEED PUMP
1.
Fill up the fuel tank with fuel (to the level where the float is at the highest position).
2.
Loosen the knob of feed pump (4), pull it out, then pump it in and out until the movement becomes heavy.
3.
Push in and tighten the knob of feed pump (4).
4.
After replacing the filter cartridge, start the engine and run
it at low idle for 10 minutes.
If the engine does not start, repeat the steps 2 and 3.
Keep away from the engine while it is being started and
running.
5.
Check the filter seal surface for leakage.
If any leakage is found, check the filter cartridge for its
tightening condition.
If leakage is still found, remove the filter cartridge.
If foreign material is caught, replace the cartridge with a new one.
For details, see “METHOD FOR REPLACING FUEL MAIN FILTER CARTRIDGE”.
6.
After the engine starts, run it for approximately 5 minutes to bleed all air from the fuel circuit.
7.
After approximately 5 minutes, stop the engine. Then, start the engine as usual.
METHOD FOR CHECKING ALL TIGHTENING POINTS OF ENGINE INTAKE PIPE
CLAMPS
Ask your Komatsu distributor for checking the tightening of the clamps between the air cleaner - turbocharger -
aftercooler - engine.
METHOD FOR CHECKING AND RELEASING NITROGEN GAS CHARGE PRES-
SURE IN ACCUMULATOR (FOR BREAKER)
(if equipped)
A special tool is needed for checking and charging of nitrogen gas. Ask your Komatsu distributor to perform this
work.
METHOD FOR REPLACING HYDRAULIC TANK BREATHER ELEMENT
k k
WARNING
• Immediately after the engine is stopped, its parts and oil are still very hot and may cause burn in-
jury. Wait for the temperature to go down, and then start the work.
• When removing the oil filler cap, the oil may spurt out. Turn it slowly to release the internal pres-
sure, then remove it carefully.
MAINTENANCE MAINTENANCE PROCEDURE
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