7 Maintenance and Care
82 TW9
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 after the filter
cartridge has been removed.
7.9.5.1 Dust ejection valve
• Dust ejection valves (43/1) are largely
maintenance-free.
• Any baked-on dust can be removed by
squeezing the valve together.
7.9.5.2 Air intake
• Check the air filter attachment and retaining
straps for damage.
• Check the tightness of the air intake between
the air filter and the engine.
• Examine rubber parts for damage.
Replace defective parts immediately!
7.9.5.3 Cartridge maintenance intervals
Air filter main cartridge
• The air filter main cartridge must be replaced
as soon as the filter maintenance indicator
lamp (44/32) on the instrument panel lights up
during operation.
• 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 fifth maintenance of the main
cartridge.
• after 2 years of operation at the latest.
• if the service indicator switches on after the
main cartridge has just been serviced.
• if the main cartridge is damaged.
• if the safety cartridge is defective.
1
S515-41
Fig. 43 Air filter
32
L824-044
Fig. 44 Operation
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