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Maintenance Instructions
Cleaning
IMPORTANT: Use only Cummins/Fleetguard air
filter elements for replacement (Walker 2090-1 and
2090-3). 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 clean-
er uses a dry paper-type 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
safety filter yearly (or when dirty or damaged).
More frequent replacement may be required when
operating in extremely dusty conditions as indicat-
ed by the air filter restriction gauge. Service the air
cleaner as follows:
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
deterioration and should be replaced yearly or
54
Canister
Push Button to Reset
Indicator After Service
when worn or 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 replaced.
NOTE: Use care when cleaning the filter
element. The filter element and/or seal sur-
face may be damaged by tapping too hard or
hitting on an uneven surface or sharp edge.
Washing the paper element in water or clean-
ing solution is not recommended. Do not try
to clean the element with compressed air. Do
not oil the paper element. Remember, replac-
ing a filter is less expensive than replacing a
dusted engine.
4.
Use a bright light inside the filter element 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 element if dirty or damaged.
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 not-
ed.
6.
Without removing, visually inspect the condi-
tion of the safety filter for damage or holes.
The safety filter should only be removed for
yearly replacement (or when dirty or dam-
aged).
IMPORTANT: Prior to removing the safety
filter, make sure the inside surface of the air
cleaner canister is clean. This will minimize
the risk of dirt entering the outlet tube which
can cause premature engine wear.
H27i
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