Komatsu PC450-8 Operation & Maintenance Manual page 349

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First, remove drain plug (P) at the bottom of the tank,

then remove drain plug (A) at the suction tube. If they

are removed in this order, almost the same amount of

oil can be drained.

7. Add the replacement amount of oil through oil filler (F). Check that the oil level is between the H and L lines on

the sight gauge (G).

For details of oil level check, see "Check Oil Level in Hydraulic Tank, Add Oil (3-113)".

8. Install the undercover (1) and (2).

9. Bleed the air from the hydraulic circuit.

For details of the method of bleeding the air from the hydraulic circuit, see "BLEEDING AIR FROM HYDRAU-

LIC SYSTEM (4-45)".

MAINTENANCE PROCEDURE

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