Venting (Purging Or Priming) Of Lubrication System - Rotax 914 series Installation Manual

13.10)Venting (purging or priming) of lubrication system

(see Fig. 45).
- Verify that oil tank connections are connected correctly and secured, and that the oil
cooler is in the suction line(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). For the purpose of this purging procedure it is necessary to add 0.5 litre
(1.05 liq pt) of oil.
■ CAUTION:
- Disconnect oil line (2) at the oil tank connection.
- Place the free end (3) of the return oil line into a suitable container (4) below the
engine.
- Plug open connection (5) at the oil tank with suitable air tight cap. See Fig. 29a.
- Remove the spark plug connectors.
- For easier rotation of engine remove the four top spark plugs.
■ CAUTION:
- Using a compressed air line, pressurise the oil tank through its breather connection
(6) (on the neck of the tank). Adjust the compressor outlet regulator so that the air
line pressure is between 0,4 (psi) and 1 bar (15 psi).
◆ NOTE:
▲ WARNING: Do not remove oil tank or cover before ensuring that air pressure has
- The pressure in the oil tank has to be maintained during the following step.
■ CAUTION:
- Turn the engine in direction of normal rotation until the pressure rises on the oil
pressure gauge. Normally this will take approx. 20 turns. Depending on installation
it may take up to 60 turns.
■ CAUTION:
- Release the pressure from the oil tank.
Effectivity: 914 Series
Edition 2 / Rev. 0
BRP-Rotax
INSTALLATION MANUAL
Incorrectly connected oil lines to the oil tank or to the engine will result
in severe engine damage.
Prevent entering of foreign substance through spark plug hole.
Oil tank cover is not designed to hold pressure. Some air will escape.
been completely released from the tank.
It is possible to empty the oil tank and as a result introduce more air into
the oil system. Pay attention to the oil level and fill tank as required.
Do not use starter for this purpose. Fit propeller and use it to turn
engine.
page 76
July 01/2008