DETROIT DIESEL
Engine Systems
It may be necessary, only as a last resort, to burn off the
lint. Extreme care must be taken to prevent melting the
galvanized coating in the tray screens. Some trays
have equally spaced holes in the retaining baffle.
Check to make sure that they are clean and open.
Figure 10 illustrates a thoroughly cleaned tray. The dark
spots in the mesh indicate the close overlapping of the
mesh and emphasize the need for using compressed air
or steam. It is suggested that users of heavy-duty air
cleaners have a spare tray on hand to replace the tray
that requires cleaning. Having an extra tray available
makes for better service and the dirty tray can be
cleaned thoroughly as recommended. Spare trays are
well worth their investment.
3. Pour out the oil, separate the inner cup or baffle from
the oil or outer cup, remove the sludge and wipe the
baffle and outer cup clean.
Fig. 10. Air Cleaner Tray (Clean)
4. Clean and inspect the gaskets and sealing surfaces
to ensure an air tight seal.
and center tube each time the oil cup is serviced. If
there are any indications of plugging, the body assembly
5. Reinstall the baffle in the oil cup and refill to the
should be removed from the engine and cleaned by
proper oil level with the same grade of oil being used in
soaking and then flushing with clean fuel oil. Allow the
the engine.
unit to drain thoroughly.
6. Remove the hood and clean by brushing, or by
8. Place the removable element in the body assembly.
blowing out with compressed air. Push a lint-free cloth
through the center tube to remove dirt or oil from the
Install the body if it was removed from the engine for
walls.
servicing.
7. Inspect the lower portion of the air cleaner body
9. Install the outer cup and baffle assembly. Be sure
the cup is tightly secured to the body assembly.
All oil bath air cleaners should be serviced as operating
conditions warrant. At no time should more than 1/2"of
"sludge" be allowed to form in the oil cup or the area
used for sludge deposit, nor should the oil cup be filled
above the oil level mark.
The United Specialties dry-type air cleaner shown in Fig.
11 consists of a body, dust unloader and element
clamped to a base.
Air is drawn through the cleaner intake pipe and is
automatically set into a circular motion. This positive
spinning of the dirty air "throws out" the heavier particles
of dust and dirt where they are collected in the dust port
and then expelled through the dust unloader. The
circular action continues even during low air intake at
engine idle speeds.
Fig. 9. Air Cleaner Tray (Plugged) Engine Systems
The United Specialties dry-type air cleaner should be
serviced, as operating conditions warrant as follows:
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