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Maintenance Section
Engine Air Cleaner Service Indicator - Inspect
Replace the dirty air cleaner elements with clean air
cleaner elements. Before installation, the new air
cleaner elements should be thoroughly checked for
tears and/or holes in the filter material. Inspect the
gasket or the seal of the air cleaner element for
damage. Maintain a supply of suitable air cleaner
elements for replacement purposes.
Air Cleaners
Some application can have dual elements. The dual
air cleaner contains a primary air cleaner element
and a secondary air cleaner element. Both element
must be replaced at the same time.
Do not replace the air cleaner filter elements in a dirty
environment, as dirt can enter the air system when
the elements are removed.
Illustration 56
Typical example
(1) Top Cover
(2) Air Cleaner Body
(3) Primary Air Filter Element
(4) End Cover
(5) Vacuum Valve
1. Ensure that the outer body of the air cleaner to be
serviced is clean and free from dirt.
2. Inspect the top cover (1) and if necessary remove
top cover to clean cover. Ensure that dirt cannot
enter the air cleaner system with top cover
removed. If necessary, clean top cover and install.
3. Remove end cover (4) from air cleaner body (2). If
necessary, clean end cover and ensure that the
vacuum valve (5) is clean and free from dirt.
Check the vacuum valve (5) for wear or damage,
replace if necessary.
4. Remove primary air filter element (3) and if
equipped, remove the secondary air filter element
(Not Shown). Discard all old air filter elements.
5. If equipped, install new secondary air filter element
(Not Shown) and install new primary air filter
element (3).
6. Install end cover (4) to air cleaner body (2) and
secure end cover. If necessary, reset the air
service indicator, refer to this Operation and
Maintenance Manual, Engine Air Cleaner Service
Indicator - Inspect for more information.
Engine Air Cleaner Service
Indicator - Inspect
(If Equipped)
Some engines may be equipped with a different
service indicator.
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 and 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 clean
side of the air cleaner housing or in a remote
location.
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Illustration 57
Typical service indicator
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