Bomag BW 100 AD-4 Operating Instructions Manual page 92

Every 250 operating hours
Fig. 141
Carefully loosen the main filter element (Fig.
l
141).
The main filter element is located directly on the air
intake tube, thereby providing a seal on the inside
of the filter cover. Carefully remove the main filter
element, in order to reduce the released amount of
dust. To release the seal pull the main filter ele-
ment carefully up, down and sideways or turn it
(Fig. 141) .
Caution
!
Avoid contact between main filter element and
housing.
Fig. 142
Pull the main filter element (Fig. 142) carefully
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out of the housing.
92
Fig. 143
Clean the sealing face on the outlet tube (Fig.
l
143).
Dust on the outer diameter of the outlet tube can
impair effective sealing.
Check the old main filter element.
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The old main filter element can be of help to dis-
cover foreign particles on the sealing face, which
could lead to leaks. A dust strip on the clean air
side of the filter may be a sign for this Eliminate
this problem before installing a new main filter ele-
ment.
If the main filter element is damaged, the safe-
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ty element must be replaced as well.
Clean or replace the main filter element.
l
i
Note
We generally recommend to change the filter. A
new filter element is far less expensive than a pos-
sible engine damage.
Examine the main filter element thoroughly for
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damage.
Before installing the new main filter element check
it for possible damage from transport, cleaning or
incorrect handling. Especially on the inside of the
open end (sealing area). Do not install damaged
filter elements.
If necessary use safety elements.
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BOMAG BW 100/120/125 AD-4/AC-4