Komatsu PC450-8 Operation & Maintenance Manual page 330

MAINTENANCE PROCEDURE
REPLACE BREATHER ELEMENT IN HYDRAULIC TANK
q
The parts and oil are at high temperature immediately after the engine is stopped, and may cause
burns. Wait for the temperature to go down before starting the work.
q
When removing the oil filler cap, turn it slowly to release the internal pressure, then remove it.
1. Remove the cap of oil filler (F) at the top of the hydraulic
tank.
2. Replace element (1) inside the cap.
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WARNING
MAINTENANCE
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