SEBU8605-01 93
Maintenance Section
Engine Air Precleaner - Check/Clean
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Illustration 57
Typical se rvice in dicator
Observe the service indicator. The air cleaner
element should be cleaned or the air cleaner element
should be replaced when one of the following
conditions occur:
•
The yellow diaphragm enters the red zone.
•
The red piston locks in the visible position.
Test the Service Indicator
Service indicators are important instruments.
•
Check for ease of resetting. The service indicator
should reset in less than three pushes.
•
Check the movement of the yellow core when
the engine is accelerated to the engine rated
speed. The yellow core should latch at the greatest
vacuum that is attained.
If the service indicator does not reset easily, or if the
yellow core does not latch at the greatest vacuum,
the service indicator should be replaced. If the new
service indicator will not reset, the hole for the service
indicator may be restricted.
The service indicator may need to be replaced
frequently in environments that are severely dusty.
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Engine Air Preclean er -
Check/Clean
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Illustra
tion 58
Typical example
(1) Wing nut
(2) Cover
(3) Body
Remove w
ing nut (1) and cover (2). Check for an
accumulation of dirt and debris in body (3). Clean the
body, if necessary.
After cleaning the precleaner, install cover (2) and
wing nut (1).
Note: When the engine is operated in dusty
applications, more frequent cleaning is required.
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Engine Crankcase Breather
Element - Replace
Hot oil and hot components can cause personal
injury. Do not allow hot oil or hot components to
co
ntact the skin.
NOTICE
Ensure that the engine is stopped before any servicing
or repair is performed.
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