ENGINE MANUAL
IAE50R – AA
E1.01.05 – E
Issue date: 25.Jan.2018
Page: 13-7
Revision no: 9
10)
Test run the engine to verify satisfactory operation before flight.
13.5.3
Air Filters
The two air filters, induction and rotor cooling air, should be visually inspected at the specified
intervals for contamination, large pieces of debris and cracks. Both filters may be cleaned and
re–used, although great care must be taken to correctly follow the manufacturer’s
instructions. Damaged filters should be replaced.
13.5.4
Air Filter Cleaning Procedure
1)
Tap filter gently, and then brush outside of filter with a soft bristle brush, to remove
loose dirt.
2)
Wash the outside of the filter with mild liquid soap and warm (maximum 40 °C)
water, by agitating the filter in the solution.
3)
Ensure that the contaminated solution does not come in contact with the inside
surfaced of the filter.
4)
Rinse off the filter, from the inside, with clean low pressure water – from a tap or a
similar supply. Rinse thoroughly to ensure all soap is removed.
5)
Examine filter and if necessary repeat stages 2 and 3.
6)
Shake off all surplus water and allow filter to dry naturally.
7)
Re–oil element:
Aerosol – Spray one pass per pleat into each pleat, from the
outside
Liquid – One bead of oil every 6 mm down each pleat.
8)
Check that no white patches remain after 10 minutes.
9)
Re–oil where necessary. A red dye in the oil clearly shows those areas that have been
correctly oiled.
10)
Reinstall air filter and tighten all clips and fittings.
Do not use harsh detergents, caustic solutions, solvents,
fuel, steam, or pressure washers!
Excess heat (over 40 °C), or compressed air will damage the
filter:
Do not use without re–oiling!
Only use filter oil from Austro Engine GmbH or K & N!
