ENGINE MANUAL
IAE50R – AA
E1.01.05 – E
Issue date: 25.Jan.2018
Page: 13-8
Revision no: 9
Once the filters have been removed, the associated duct and
fan impeller should be inspected for dust or debris of any
type. If found, it indicates inadequate filter care or a
damaged filter and could have serious consequences. Advice
should be sought from Austro Engine GmbH on the
significance of this material and the effect it may have on
the engine. Either or both filters should be replaced if their
condition is suspect.
13.5.5
Rotor Cooling Air Fan Impeller
1)
At the intervals stated in 12.1 the fan impeller should be inspected. The complete fan
should be removed from the engine and the bearing housing assembly removed from
the fan housing.
2)
Carefully examine the impeller for cracks with a X 10 magnifying glass, particularly on
the fan blade – back plate, root radius. No cracks are allowed.
If in doubt change the impeller / bearing housing assembly!
The impeller cannot be removed from spindle!
3)
Refit and check the fan belt tension (see Section 11.2.3).
