Maintenance
92
C2500CB-OM-EN-16
4. Check the outlet slot on the dust valve (
C
) for dust build up. Remove dust by
pinching the valve. Make sure the dust valve is flexible and not inverted,
damaged or plugged. Replace the dust valve if necessary.
5. Unlatch the filter cover (
D
) and remove from the filter housing (
E
).
6. Remove the primary filter element (
F
) – gently move the end of the filter back
and forth to break the seal, then rotate while pulling it straight out. Avoid
knocking it off the housing while removing.
7. If the optional safety filter element (
G
) has been fitted, visually check it in place
for damage and check that it is properly seated.
Do not remove the safety filter unless it is due for replacement.
Change the safety filter every three primary filter changes.
DO NOT attempt to clean or reuse the safety filter.
When changing the safety filter use a clean damp cloth to wipe the filter sealing
surface and the inside of the outlet tube.
8. Avoid leaving the outlet to the engine exposed for any period of time. Keep the
outlet covered to avoid admitting dust to the engine.
9. Inspect the primary filter element. Clean if lightly soiled or replace if heavily
soiled. If there is a streak of dust on the clean side of the filter it must be
replaced.
To clean the filter :
Lightly knock off as much dust as possible.
Blow out with dry compressed air (maximum 5 bar pressure) from the
inside to the outside.
10. If fitting a the new primary filter element inspect the new element for damage.
Never install a damaged filter.
Do not wipe the sealing area on the primary
filter.
11. Insert the new filter. If changing the safety filter at this service, seat it properly
before installing the primary filter. Insert new filters carefully. Make sure filters
are inserted completely into the housing. Press in by hand along the rim of the
filter, not the flexible centre..
12. Reinstall the filter housing cover ensuring that the dust valve is pointing down
towards the ground. The cover should not come into contact with the filter
element before it is fully in place. If there is contact before the cover is fully in
place the filter must be pushed in further before latching the cover.
D
E
F
C
G
