49
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.
Canister
Primary
Filter Element
Air Cleaner Components
(Shown with Cover Removed)
IMPORTANT:
The Cummins/Fleetguard air cleaner
uses a dry paper-type air filter element.
NEVER
ap-
ply oil to the paper element.
Push Button to Reset
Indicator After Service
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 fre-
quent replacement may be required when operating
in extremely dusty conditions as indicated 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” position
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 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 resis-
tance 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 re
-
moved.
3. Replace the primary filter element.
NOTE:
Washing the element in water or clean ing
solution is
not recommended.
Do not try to
clean the element with compressed air.
4. Use a bright light inside the primary 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. Re-
place element if necessary.
5. Without removing, visually inspect the condition
of the safety filter for damage or holes. The
safety filter should only be removed for yearly
replacement (or when dirty or damaged).
6. Check the condition and resilience of the radial
sealing surface (inside of the open end) of the
primary filter element. Replace the element if any
cracks, tears, or other damage to the sealing sur-
face are noted.
7. Use a clean, damp cloth and wipe the interior of
the air cleaner canister clean. Use special care
to clean
both the inside and outside
surfaces
of the outlet tube.
IMPORTANT:
Any dust left on the inside of the
outlet tube will go into the engine and cause wear.
8. Check the outside surface of the outlet tube for
smoothness and cleanness (this is the sealing
surface).
