• 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.
i07819526
Engine Air Precleaner - Check/
Clean
Illustration 50 g01453058
Typical engine air precleaner
(1) Wing nut
(2) Cover
(3) Body
Remove wing 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
conditions, more frequent cleaning is required.
Do not tap or strike the air cleaner element.
i02657627
Engine Crankcase Breather -
Replace
NOTICE
Keep all parts clean from contaminants.
Contaminants may cause rapid wear and shortened
component life.
Illustration 51 g01335247
Typical example
(1) Screws for the breather cover
(2) Breather cover
(3) Spring
(4) Diaphragm and plate
(5) Spacer for turbocharged engines only
(6) Joint for turbocharged engines only
(7) Cavity
(8) Vent hole
1. Loosen the screws (1) and remove the breather
cover (2) from the valve mechanism cover.
2. Remove the spring (3). Remove the diaphragm
and plate (4).
3. For turbocharged engines, remove the spacer (5)
and the joint (6).
74
SEBU8311-09
Maintenance Section
Engine Air Precleaner - Check/Clean
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