Engine air filter
Warning
It is important that the warning light, which shall be lit when the air
filter is clogged, is always working efficiently. This check can be
carried out by starting the engine and briefly blocking the air intake
pipe by means of a plug (never touch it with your hands).
The filter cartridge should be thoroughly clean, if not, it shall be
cleaned or washed.
Cleaning with compressed air
This method is used when the filter cartridge is clogged with dust.
Direct a compressed air jet at a maximum pressure of 7 bar from
the inside outwards of the filter cartridge, afterwards blow the air
over the whole surface by moving the air jet along the foldings in
the paper until all dust has been removed.
Washing with water
This method is particularly recommended when the filter cartridge
is obstructed by oily substances and consists of washing the filter
cartridge in clean water.
Rinse the cartridge with a jet of water directed from the inside
outwards at a maximum pressure of 3 bar.
Let the cartridge dry 24 hours at room temperature in a dust-free
environment.
Reassembling the cartridge
Clean the inside of the filter body with a dry cloth and make sure
that the cartridge has not become deformed in any way.
Also check that the paper of the filtering cartridge is not torn by
introducing a light source into the cartridge interior and visually
inspecting its outside surface to see if any light shows through. If
no light source is available, carefully examine the external surface
of the cartridge folded paper.
Should any holes or tears be found, regardless of their size, the
filter cartridge should be replaced at once.
The inner safety cartridge should never be cleaned but only
replaced every six times the main cartridge is cleaned.
Fig. 11 - Washing the filter cartridge.
Fig. 12 - Cleaning the filter cartridge with com-
pressed air.
Fig. 13 - Using a water jet to remove any residual
left on the filter cartridge.
Fig. 14 - Using a light source to check the filter
cartridge folded paper conditions.
engine
intake and exhaust system
18
1
91
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