Case W9 - Page 13

AIR CLEANER SERVICE
Dry Air Cleaner
The air cleaner must be serviced when
the red band is in full view on the air . cleaner
service indicator .
PRIMARY FILTER ELEMENT: Washing is
the preferred method of cleaning the element
as it removes more dust and soot, thus re-
storing the element to an almost new condition.
Wash the filter in Case Filter Element
Cleaner, Part No. A40910. Mix according to
instructions on container. Do not use water
pressure over 40 PSI at the nozzle. Let the
element dry completely before installing. Do
not use air pressure to dry the element.
The element can be cleaned with com-
pressed air although it is not recommended
because it will not remove carbon and soot.
Do not use air pressure in excess of 100 PSI
at the nozzle . Place the element on a clean
flat surface, then place a cover (wood or metal)
with a small opening over the top of the
element . Place nozzle in opening in cover.
Blow element clean, starting with low air
pressure and gradually increasing it.
Inspect the element after it is clean and
dry as shown in Figure 2 •
", I")() c-
'j '; ' ., C' - ('
~ ') -
Figure 2
Rotate the filter around the light and check
for damage and pin holes. Check the gasket
for defects. Inspect the metal covering for
dents. Any dent in the covering is a poten-
8
tial puncture, in that the paper element will
rub the dent and a hole will result. Elements
with holes or indications of fuzz must be re-
placed. Replace gasket if it is found to be
defective. Do not accept a new filter or in-
stall a new or used filter if the metal covering
is dented.
The filter should be replaced after it has
been cleaned six times or once a year (1000
hours), whichever occurs first. When servic-
ing the air cleaner, make sure all connections
are air tight. Air cleaner efficiency is di-
rectly dependent upon air tight connections .
SECONDARY FILTER ELEMENT : Cleaning
the secondary element is not recommended
except in an emergency. If the element is
cleaned it should be replaced as soon as
possible. Check the secondary element for re-
WING NUT---~
COVER-~
WASHER .,_.
PRIMARY_
ELEMENT
WING NUT-_:¥
COVER__.@
-•
SECONDARY
ELEMENT
Figure 3