Effectivity: 914 Series
Edition 2 / Rev. 0
d04278
page 75
July 01/2008
BRP-Rotax
INSTALLATION MANUAL
13.7) Feasible position and location of the oil cooler
See Fig. 44.
- On principle the oil cooler (5) has to be installed below the oil pump of the engine.
■ CAUTION: The oil cooler has to be installed with connections upwards i.e. in
positive direction on z-axis. This will prevent an unintentional draining
of the oil cooler at longer engine stop.
- If this position is not practical, install also the oil cooler with connections upwards
i.e. in positive direction on z-axis.
■ CAUTION: This will prevent an unintentional draining of the oil cooler at longer
engine stop.
▲ WARNING: The oil cooler has to be planned and installed such that the specified
operating temperatures are maintained and the max. values are
neither exceeded nor fall below.
This state has to be warranted for "hot day conditions" too!
If need be, take appropriate measures like changing size of cooler,
partial covering of cooler etc.
13.8) General notes on oil cooler
BRP-Rotax offers for this engine an oil cooler (see Illustrated Parts Catalog, latest
issue).
▲ WARNING: Certification of this cooler to the latest requirements such as FAR or
EASA has to be conducted by the aircraft manufacturer.
■ CAUTION: The oil cooler has to be designed to dissipate approx. 10 kW
(8,5 BTU/s) heat energy at take-off power.
◆ NOTE: From years of experience we recommend an oil cooler size of at least
160 cm
2
(25 in
2
), provided that air flow is adequate.
■ CAUTION: The oil cooler must not restrict oil flow. Test system as per sec. 13.3.
13.9) Filling capacity
- Oil quantity without oil cooler and connecting lines min. 3 l (0,8 US gal) depending
on the respective installation
Volume of oil tank
up to the MIN.-mark.......................... 2,5 l (0,66 US gal)
up to the MAX.-mark ........................ 3,0 l (0,8 US gal)
- Perform oil level check and add oil if necessary
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