Komatsu PC138US-11 Operation & Maintenance Manual page 386

Hydraulic excavator
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MAINTENANCE PROCEDURE
4.
After removing cover (7) from ventilator body (8), remove
element (9).
Oil may be accumulated in or sticking to cover (7) and ele-
ment (9). When replacing the element, take care that the
oil will not spill out.
REMARK
When the ambient temperature is low, water or emulsified
matter may stick to the inside of KCCV because of con-
densation of water vapor in the blowby gas. However, as
far as the coolant level is normal, it is not a problem.
5.
Apply engine oil to O-rings (11) (2 pieces) fitted to the top
and bottom of the new element and insert the element into
the body.
REMARK
You can install the element with either side up.
6.
Replace O-ring (10) of ventilator body (8) with new one
and apply engine oil to it, and then install cover (7) to the
body.
Tighten the cover firmly with the hand until you cannot
tighten any more.
7.
Tighten the cover until clearance (B) between it and body
is eliminated with the bare hand or a filter wrench.
At this time, check that bolt-fixed position (C) of tube (5) is
within the range of the groove of elbow (2).
REMARK
As a mark, notch (D) is made on the plate.
4-70
WENAM00111
MAINTENANCE

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