Engine Crankcase Breather - Replace - Perkins 2506 Operation And Maintenance Manual

64
Maintenance Section

Engine Crankcase Breather - Replace

Some engines are equipped with a differential gauge
for inlet air pressure. The differential gauge for inlet
air pressure displays the difference in the pressure
that is measured before the air cleaner element and
the pressure that is measured after the air cleaner
element. As the air cleaner element becomes dirty,
the pressure differential rises. If your engine is
equipped with a different type of service indicator,
follow the OEM recommendations in order to service
the air cleaner service indicator.
The service indicator may be mounted on the air
cleaner housing or in a remote location.
Illustration 29
Typical service indicator
Observe the service indicator. The air cleaner
element should be cleaned or the air cleaner element
should be replaced when the following condition
occurs:
• The red piston locks in the visible position.
Engine Crankcase Breather -
Replace
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Illustration 30
Typical example
Ensure that the components of the breather assem-
bly are installed in the correct position. If installed in-
correctly, engine damage can result.
1. Remove all dirt and oil from the outside of the
breather assembly. Unlatch the four clips (1) that
secure the top cover (2). Remove the top cover
(2). The breather element includes an O ring.
Remove the breather element by turning and lifting
the element. Discard the element. Clean the inner
surfaces of the breather body (3). Clean the top
cover (2) and inspect the O ring in the top cover
(2). If the O ring in the top cover is worn or
damaged, replace the O ring.
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NOTICE