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Maintenance Instructions
IMPORTANT: Use only Cummins/Fleetguard air
filter elements for replacement (Walker 20901 and
20903). Aftermarket filters may not seal properly or
filter efficiently.
Primary
Filter Element
Air Cleaner Components
(Shown with Cover Being Removed)
IMPORTANT: The Cummins/Fleetguard air cleaner
uses a dry papertype air filter element. NEVER
apply oil to the paper element.
Air Filter
Restriction Gauge
Air Filter Restriction Gauge Location
Inspect the primary filter element after every 100
hours of service and replace the element and safe
ty filter yearly (or when dirty or damaged). More
frequent replacement may be required when operat
ing in extremely dusty conditions as indicated by the
air filter restriction gauge. Service the air cleaner as
follows:
54
Canister
Push Button to Reset
Indicator After Service
1.
Lift Mono Latch Twist Lock™ and twist the
OptiAir™ cover to the left into the "open" posi
tion to remove the air cleaner cover. Wash the
cover and dust ejection valve. Check that these
components are in good condition. The dust
ejection valve is subject to wear and deteriora
tion and should be replaced yearly or when
damaged. The lips of the valve should close and
fit together; any cracks, deformation, or wear in
the valve is cause for replacement.
2.
Remove the primary filter element by pulling it
out of the canister. There will be some initial
resistance as the filter seal breaks loose and
slides off of the outlet tube. Gently move the
end of the filter up and down and side to side or
twist to loosen the seal. Use gentle action to
minimize the amount of dust dislodged as the
filter is removed.
3.
Discard the filter element if excessive air flow
restriction has been indicated by the air filter
restriction gauge and proceed to Step 6. Clean
the filter element by gently tapping on a flat,
hard surface. If excessive restriction still exists
after cleaning the element, it should be re
placed.
NOTE: Use care when cleaning the filter ele
ment. The filter element and/or seal surface
may be damaged by tapping too hard or hitting
on an uneven surface or sharp edge. Washing
the element in water or cleaning solution is not
recommended. Do not try to clean the element
with compressed air. Remember, replacing a
filter is less expensive than replacing a dusted
engine.
4.
Use a bright light inside the filter to inspect for
damage. Check the element very carefully for
pin holes or other damage that will allow dirt
to leak through the paper media. Replace filter
if necessary.
5.
Check the condition and resilience of the radial
sealing surface (inside of the open end) of the
filter. Replace the filter if any cracks, tears, or
other damage to the sealing surface are noted.
6.
Without removing, visually inspect the condition
of the safety filter for damage or holes. The
safety filter should only be removed for replace-
ment YEARLY (or when dirty or damaged).
CLEANING
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