cartridge is too loose, fuel will also leak from the packing. Therefore, be sure to observe the tightening an-
gle.
When tightening with a filter wrench, be extremely careful not to dent or damage the filter.
8.
Turn valve (1) at the bottom of the fuel tank to “OPEN” position (O).
9.
Install fuel tank cover (3). (if equipped)
10.
After completing the replacement of filter cartridge (2),
bleed air from the fuel circuit.
REMARK
For the procedure to bleed air, see “PROCEDURES FOR
BLEEDING AIR FROM FUEL CIRCUIT (3-256)”.
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
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.
1.
Remove nut (2) of breather assembly (1) at the top of the
hydraulic tank, then remove cover (3).
MAINTENANCE MAINTENANCE PROCEDURE
4-63
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