Service and maintenance
118 Air cleaner
Air cleaner
The air cleaner prevents dust and other impurities from entering
the engine. First the air passes the primary filter and then the
secondary filter.
The extent of engine wear depends largely on the cleanliness of
the induction air. Therefore, it is very important that the air cleaner
is checked regularly and maintained correctly. Maintain greatest
cleanliness when working with the air cleaner and filters.
IMPORTANT! Do not, under any circumstances, run the
engine without a filter or with a damaged filter.
Check regularly that hose and pipe connections from the air
cleaner to the engine's induction manifold do not leak.
Always have a spare air filter available and keep it well
protected from dirt.
Primary filter, cleaning/replacing
Clean or replace the filter every 1000 hours.If the control lamp
turns on earlier and an alarm screen is shown, see page 38,
cleaning or replacement must be carried out immediately. The
time between cleaning/replacement depends entirely on the
machine's work environment.
The filter may be cleaned five times, at the most. Then the filter
must be replaced. Also replace the filter if it is damaged.
If the control lamp continues to light after cleaning/replacement,
the secondary filter must be replaced, see page 119.
NOTE! At the same time clean the air cleaner cover. However,
in dusty and wet conditions the cover should be cleaned more
often.
Take care of filters/oils/liquids in an environmentally safe way,
see page 97.
Mechanical cleaning
1 Carefully tap the end of the primary filter against a soft and
clean surface.
NOTE! Do not tap against a hard object.
Cleaning with compressed air
1 Use clean and dry compressed air with a max. pressure of
500 kPa (5 bar). Do not hold the nozzle closer than 3–5 cm.
2 Blow the filter clean from the inside along the folds.
Checking filter
1 Check the filter with the aid of a lamp.
2 If there is the smallest hole, scratch, crack or other damage, the
filter must be discarded.
NOTE! To discover damage more easily, this check should be
made in a darkened room.
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