d
068
92.
fm
SI-916 i-003R1 / SI-915 i-003R2
SI-912 i-004R3 / SI-912-018R4 /
SI-914-020R4
SERVICE INSTRUCTION
02 July 2021
79-00-00
Revision
Page 5 of 15
Copyright - BRP-Rotax GmbH & Co KG. All rights reserved.
3.3) Operation - related information
In general all operating limits as per current Operators Manual (OM) have to be observed. In par-
ticular the limits which have influence to induce air into the oil system like e.g. acceleration and
static roll angle.
Pre-flight check and oil level check
.
3.4) Maintenance - related information
3.4.1) Purging of oil system
.
-
Verify that oil tank connections are connected correctly and secured, and that the oil cooler (if
fitted) is in the suction line (pos. 1 on Fig. 1) between the oil tank and the oil pump inlet. Verify
that the oil tank is filled up to the maximum level (to the top of the flat portion of the dipstick).
Additional oil (up to 0.5 liter) may be added to the tank for the purpose of this procedure.
NOTE:
Consult appropriate engine Installation Manual for diagrams to identify oil tank and oil
pump connections. Older engines may be equipped with oil tanks that have oil ports in
different locations.
See Chapter 3 section 3.2, current Operators Manual (OM) for the respective engine
type. In particular make sure that the oil level in the oil tank is between the two
marks (max./min.) on the oil dipstick, but must never fall below the min. mark.
All work has to be performed in accordance with the relevant ROTAX
®
Instructions for
Continued Airworthiness (ICA) of the respective engine type.
m
WARNUNG
NOTICE
Incorrectly connected oil lines to the oil tank or to the engine will result in
severe engine damage.
Step
Procedure
1
Disconnect oil return line(s) (pos. 2 on Fig. 1) from the oil tank (915 i and 916 i: two return
lines).
NOTE:
Do not disconnect the turbo scavenge return line.
2
Place the free end (915 i and 916 i with two free ends) (pos. 3 on Fig.1) of the return oil
line into a suitable container (pos. 4 on Fig. 1) below the engine.
NOTE:
This step is a cleanliness precaution. Typically, during the purging pro-
cedure, oil does not come out from the hoses.
3
Plug open connection (pos. 7 on Fig. 1) (915 i and 916 i with two connections) on oil tank
with suitable air tight cap or plug.
4
Remove all of the spark plug connectors from the spark plugs.
5
For easier rotation of engine remove one spark plug from each cylinder.
