MANITOWOC ENGINEERING, CO.
Division of The Manitowoc Company, Inc. Manitowoc, Wisconsin 54220
ENGINE AIR CLEANERS
GENERAL
This folio provides service instructions for oil-washed
and dry-type engine air cleaners. Servicing engine air
cleaners is an important maintenance function. A
clogged air cleaner will prevent adequate air flow to the
the engine, resulting in poor starts, excessive fuel con-
sumption, increased exhaust emissions, and possible
engine damage.
SERVICE TIPS
To maintain maximum element service life and maxi-
mum engine protection, the air cleaner should be
inspected regularly. The inspection should include these
points:
1. Inspect the tube between the air cleaner and engine to
be sure all clamps and flange joints are tight. Check for
cracks; replace defective parts.
2. Check for loose mounting clamps and bolts; tighten if
necessary.
3. Inspect the air cleaner inlet for obstructions; remove.
4. If equipped, the dust ejector (see Figures 4 and 6)
must be in place, not inverted or damaged, and free from
obstruction.
5. Check the air cleaner for dents or other damage
which could indicate a leak; replace faulty parts.
6. Inspect the dust cup (Figure4) daily for dirt accumu-
lation. Empty the dust cup when it is two-thirds full. This
interval can be lengthened when the rate of accumula-
tion is established.
NOTE
The dust ejector, when provided, minimizes dust
cup servicing.
7. The oil cup (Figure 2) must be checked daily for dirt
accumulation. Service the oil-washed air cleaner when
there is one-half inch of dirt in either cup. This interval
can be lengthened when the rate of dirt accumulation is
established. Extremely dusty conditions may require
several inspections daily.
8. If equipped, check the service indicator daily (Figure
1 ) (dry-type air cleaners). The service indicator signals
when to change the air cleaner element. The "red flag" in
the window gradually rises to the top as the air cleaner
loads with dirt.
DO NOT
service the element until the
flag reaches the top and locks in place. When "locked",
the flag will remain at the top when the engine is
stopped. After changing the element, push the button to
reset the indicator.
NOTE
If a service indicator is not provided, service the
element in accordance with the engine manufac-
turer's recommendations.
| M PO R1FA NT Do not service air cleaner with engine
running; otherwise, dirt will be drawn directly into
engine.
SERVICING OIL-WASHED AIR CLEANER
(Figure 2)
©Manitowoc 1984~
8-24-76 (Rev. 9-12-84)
Figure 1 Service Indicator
1. Detach the clamps and remove the oil cup. If used, lift
the removable element assembly from the oil cup.
2. Pourtheoiloutand separate the inner cup from the oil
cup. Thoroughly remove all sludge and wipe the cups
clean.
3. Reassemble the cups. Refill both cups to the indi-
cated oil level. Use SAE #10 oil for below freezing
temperatures; use SAE #30 oil for above freezing
temperatures. The same oil used in the engine crank-
case is acceptable.
4. Hold the removable element, if equipped, up to a
bright light. The element is clean if a bright even light
pattern is seen through the wire mesh.
If the element is even partially plugged with dirt, lint or
other debris, it must be thoroughly washed with solvent.
Blow the element clean with compressed air.
5. Inspect the bottom of the body each time the air
cleaner is serviced. The body assembly must be removed
and cleaned if there are signs of dirt build-up or plug-
ging. Proceed as follows:
a) Clean the center tube with a solvent-soaked
swab.
b) Pump solvent through the air inlet with sufficient
force and volume to produce a hard even stream
out the bottom of the body. Reverse flush until all
foreign material is removed.
c) Dry the body and reinstall it on the engine.
NOTE
Perform step 5 at lease once a year.
6. Reassemble the removable element to the oil cup and
the oil cup to the body. Make sure the oil cup is properly
seated against the body and attach the clamps.
SERVICING DONALDSON DRY-TYPE
AIR CLEANER
(Figure 4)
NOTE
Refer to the air cleaner illustration which most
closely resembles your air cleaner.
1. Remove the dust cup and/or the element cover.
2. Clean the dust cup and cover. If equipped, clean the
dust ejector.
(Continued)
ENGINE AIR CLEANERS FOLIO 884-1
395143
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