runs clean to rinse all loosened foreign material from
the element. Shake out excess water from the element
and allow it to dry thoroughly.
CAUTION: Do not attempt to remove excess
water by using compressed air.
4. Inspect the cleaned element with a light bulb after
each cleaning for damage or rupture. The slightest
break in the element will admit sufficient airborne dirt
replace the element.
Fig. 12 - United Specialties Dry Type Air
5. Inspect the gasket on the end of the element. If the
gasket is damaged or missing, replace the element.
1. Loosen the clamp screw and check the dust unloader
for obstruction or damage.
6. Install the element on the base with the gasket side
of the element down against the base. Place the body
2. Unlock the spring clamps that hold the cleaner body
over the element and base and tighten the spring
to the cleaner base which is bolted to the air inlet
clamps by hand.
housing. Remove the body and then remove the
element from the cleaner base.
7. Replace the element after 10 washings or 1 year of
service, whichever comes first, or any time damage is
3. The paper pleated air cleaner element can be
cleaned as follows:
8. Install the dust unloader and tighten the clamp.
a. For a temporary expedient in the field, tap the
side or end of the element carefully against the
palm of your hand.
The Farr dry-type air cleaner (Fig. 13) is designed to
provide highly efficient a i r filtration under all
CAUTION: Do not tap the element against a
operating conditions and is not affected by engine
hard surface. This could damage the element.
speed. The cleaner assembly consists of a cleaner
panel with a replaceable impregnated paper filter
b. Compressed air can be used when the major
contaminant is dust. The compressed air (not to
exceed 100 psi) should be blown through the
The cleaner panel and replaceable filter element are
element in a direction opposite to the normal air
held together in a steel housing with fasteners.
flow. Insert the air nozzle inside of the element
and gently tap and blow out the dust with air.
When cleaning the dust from the outside of the
element, hold the nozzle at least 6" from the
c. Wash the element if compressed air is not
available, or when the contaminant is carbon,
soot, oily vapor or dirt which cannot be removed
with compressed air.
d. Agitate the element in warm water containing a
CAUTION: Do not use water hotter than your
hand can stand, solvents, oil, fuel oil or
Preceding the washing, it helps to direct air (not
exceeding 100 psi or 689 kPa) through the element in
a direction opposite the normal air flow to dislodge as
much dust as possible. Reverse flush with a stream of
Fig. 13 - Farr Dry Type Air Cleaner
water (not exceeding 40 psi or 276 kPa) until the water