TPD1327E Chapter 4
Page 35
Air lter
Environmental conditions have an important effect
on the frequency at which the air lter needs service.
The air lter has a dust bowl (A1) or (B1) which
must be cleaned. Do not allow dust to ll the bowl,
because this will reduce the life of the lter element
(A3) or (B3).
An automatic dust valve (A5) or (B4) is tted through
which dust is expelled from the lter. The rubber dust
valve must be kept clean.
How to renew the element of the air lter
1. Release the dust bowl (A1) or (B1).
2. Release the fastener (A4) and remove the
element (A3) from the lter body. Discard the
element. Some elements (B3) are a push t into
the lter body and do not have a fastener.
Note: Some lters have a secondary element (B2)
tted.
3. Clean the dust bowl and the inside of the air
lter body. Ensure that the dust seal (A2) is not
damaged.
4. Fit a new element into the body and tighten the
fastener.
5. Ensure that the sides of the dust valve (A5) or
(B4) close completely together and that they
can separate freely, if necessary renew the dust
valve.
6. Fit the dust bowl.
A restriction indicator is tted to the lter, it will
indicate when the air lter element needs service.
This prevents late removal of the element which can
cause loss of engine power, see page 48.
Caution: The lter element(s) must be renewed
according to the maintenance schedule, see page
15, or earlier if the restriction indicator operates.
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