CAT 3412C - Engine Air Cleaner Service Indicator - Inspect (If Equipped)

Inspecting the Primary Air Cleaner
Elements
Illustration 101 g00281693
Inspect the clean, dry primary air cleaner element.
Use a 60 watt blue light in a dark room or in a similar
facility. Place the blue light in the primary air cleaner
element. Rotate the primary air cleaner element.
Inspect the primary air cleaner element for tears and/
or holes. Inspect the primary air cleaner element for
light that may show through the filter material. If it is
necessary in order to confirm the result, compare the
primary air cleaner element to a new primary air
cleaner element that has the same part number.
Do not use a primary air cleaner element that has
any tears and/or holes in the filter material. Do not
use an primary air cleaner element with damaged
pleats, gaskets or seals. Discard damaged primary
air cleaner elements.
Storing Primary Air Cleaner Elements
If a primary air cleaner element that passes
inspection will not be used, the primary air cleaner
element can be stored for future use.
Illustration 102 g00281694
Do not use paint, a waterproof cover, or plastic as a
protective covering for storage. Restricted air flow
may result. To protect against dirt and damage, wrap
the primary air cleaner elements in Volalite Corrosion
Inhibited (VCI) paper.
Place the primary air cleaner element into a box for
storage. For identification, mark the outside of the
box and mark the primary air cleaner element.
Include the following information:
• Date of the cleaning
• Number of cleanings
Store the box in a dry location.
For more detailed information on cleaning the
primary air cleaner element, refer to Special
Publication, SEBF8062, “Procedure to Inspect and
Clean Air Filters”.
i06103548
Engine Air Cleaner Service
Indicator - Inspect
(If Equipped)
SMCS Code: 7452-040
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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SEBU7125-13
Maintenance Section
Engine Air Cleaner Service Indicator - Inspect