Perkins 4.99 - Air Cleaner Types and Servicing; Rotopamic and Oil Bath Air Cleaners

AIR CLEANERS AND FUEL SYSTEM-N.2
N2
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Inspect cleaned element by placing a bright light
inside and looking through element. Any thin spots, pin
holes or other damage will render the element unfit for
further use.
The element
should be renewed after six detergent
washes or annually, whichever occurs first. Clean the
inside of the element body and dry thoroughly. Inspect
joints, hoses and clips and renew where necessary.
Re-assemble
cleaner ensuring that all jOints are leak
proof.
Extreme Heavy Duty Two Stage,
with Multiple Elements "Rotopamic" -
See Fig. N.3
The "Rotopamic" type air cleaner may be fitted
where the application is designed to work in heavy
concentrations of dust and a restriction indicator must
be fitted.
The
air cleaner elements are replaceable and no
attempt should be made to clean or re-use dirty ele-
ments or cartridges.
N3
For cartridge replacement, unclamp and remove the
moisture eliminator or pre-cleaner panel, pull out the
dirty cartridges and insert the new ones. Refit the pre-
cleaner.
Never use petrol (gasoline) for cleaning any of the
air induction system.
Oil Bath Air Cleaners - See Fig. N.4
To service the oil bath type cleaner, the lid should
be removed and the element lifted out. The oil in the
container should be drained out and the dirt and
sludge thoroughly cleaned out with a proprietary
cleaning fluid or Kerosene. Refill the container with
clean new engine lubricating oil, to the indicated level.
The woven
filter element should be cleaned in a bath
of Kerosene. Do not use petrol (gasoline) as this
highly volatile fuel could cause explosive damage
within the engine. The indicated filling mark level
should never be exceeded, otherwise oil can be drawn
up into the engine which could lead to uncontrolled
engine speeds, and excessive engine wear.
N4
The heavy duty oil bath air cleaners are usually
fitte.d
with a centrifugal pre-cleaner mounted on top of
the main cleaner,
this should be removed and the air
inlet vanes in the bottom plate of the assembly, the
ejection slots on the side of the cone and the vanes
in
the outlet tube, cleaned of dust and dirt. The de-
tachable element is accessible by lowering the oil
container which may be attached by clips or a pinch
screwed clamp.
Thoroughly clean the container and refill to the in-
dicated level with new engine lubricating oil. The
separate element should be cleaned in a Kerosene
bath.
The
upper element which is permanently attached
inside the body should be periodically cleaned by
washing in a Kerosene bath. Drain the element
thoroughly before reassembly and do not use petrol
(gasoline) for cleaning purposes.