Care and Maintenance 7
TC29
67
7.9.5 Air filter, air intake
All maintenance work on the air intake
system must be carried out with the
engine off.
Do not start the engine while the filter
cartridge is removed.
7.9.5.1 Dust ejection valve
• The dust ejection valve (53/1) is largely
maintenance-free.
• Any baked-on dust can be removed by
squeezing the valve together.
7.9.5.2 Air intake
• Clean impurities (leaves, etc.) from the air
intake section before the air filter.
• Check the air filter attachment for damage and
repair or replace, if necessary.
• Check the tightness of the air duct after the air
filter.
• Examine rubber parts for damage.
Replace damaged parts immediately.
7.9.5.3 Cartridge maintenance interval
Air filter - main cartridge
• The air filter main cartridge must be replaced
when, during operation, the filter clogging
indicator lamp (54/21) in the instrument panel
lights up, actuated by the service switch.
• A brief delay in maintenance does not result in
lower filter efficiency.
Air filter - safety cartridge
The air filter - safety cartridge must be replaced in
the following cases:
• after the third maintenance of the main
cartridge
• when it has reached the maximum service life
of two years
• if the service indicator switches on after
maintenance of the main cartridge has just
been performed
• if the main cartridge is damaged
• if the safety cartridge is damaged
1
HR12-03-53
Fig. 53-Air filter
TC35-03-54
21
Fig. 54-Operation
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