Method For Checking All Tightening Points Of Engine Intake Pipe Clamps; Method For Checking And Releasing Nitrogen Gas Charge Pressure In Accumula- Tor (For Breaker); Method For Replacing Hydraulic Tank Breather Element; Method For Replacing Def Tank Breather Element - Komatsu PC290LC-11 Operation & Maintenance Manual

MAINTENANCE
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

• 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.
2.
Remove cover (3).
3.
Replace filter element (4) with a new one.
4.
Replace element (1) inside the cap.
5.
Install cover (3) and nut (2).

METHOD FOR REPLACING DEF TANK BREATHER ELEMENT

Do not replace the element immediately after engine is stopped.
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WARNING
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WARNING
MAINTENANCE PROCEDURE
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