IMPORTANT: The safety filter behind the main engine air filter must not be
cleaned but must always be changed according to the maintenance schedule.
The purpose of the safety filter is to prevent damage to the engine if the main
engine air filter fails.
1. Stop the engine.
2. Take out the main engine air filter from the air filter housing.
3. Direct the air flow from the rear side of the main engine air filter forward in the
air direction.
Use clean and dry compressed air with a maximum pressure of 500 kPa.
IMPORTANT: Do not hold the nozzle closer than 3-5 cm from the main
engine air filter.
GUID-8D43BDED-43E6-4BA4-BD67-3B0BFDDFD1A7
4. Direct the air flow from the front side of the main engine air filter and after
that from the rear side.
5. Check the inside of the air cleaner housing and the inlet pipe.
Dirt on these parts indicates that the filter element is defective or has not
been fitted properly.
6. Check the main engine air filter and its sealing surfaces using a flashlight.
7. Fit the main engine air filter back in the air filter housing.
5.2.2
Identifying a blocked transmission or hydraulic system filter
When the pressure oil filter clogging indicator light
is lit the filter of the
transmission or hydraulic system is blocked.
If the indicator light is lit when the oil has been warmed, one of the pressure filters
(not the low pressure filter of the transmission system) is blocked. If the indicator
light is lit when using auxiliary hydraulics, it is probably only the hydraulic return
filter which is blocked.
NOTE: All filters are identical.
5. Faults and remedial actions
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