Switch with lock (green) – front/rear additional control circuit (option

3.14 Air filter

Checking the air filter for dirt

54

E

F D E

Fig. 36: Air filter with safety cartridge

Caution!

The filter housing is fitted with a discharge slot E for removing the dust. Bear in mind the following to avoid premature engine wear!

Do not wash, brush or clean the filter cartridge with compressed air

Replace the filter cartridge when indicator light 54 comes on

Never reuse a damaged filter cartridge

Ensure cleanliness when replacing the filter cartridge!

Do not clean the safety cartridge – replace it every third time maintenance is carried out on the filter!

Checking the dust valve •Stop the engine •Apply the parking brake •Remove the ignition key and switch off the battery master switch (option) if necessary •Squeeze the discharge slot of dust valve E •Remove hardened dust by compressing the upper area of the valve •Clean the discharge slot if necessary

Notice!

Replace the air filter cartridge as soon as indicator light 54 on the indicating instrument comes on –see Replacing the air filter cartridge on page3-23 •At the latest after 1500 service hours (however once a year)

Caution!

Filter cartridges degrade prematurely when in service in acidic air for longer periods of time!

Replace filter cartridge D and safety cartridge F at the latest after 500 service hours! –see Replacing the air filter cartridge on page3-23