Lubrication System; Lubrication; Crankcase; Oil Pump - Rotax 914 Series Operator's Manual

7.3) Lubrication system

General note

Lubrication

Crankcase

Oil pump

Oil circuit vented

Oil temperature
sensor

Turbocharger

Effectivity: 914 Series
OM Edition 2 / Rev. 0
See Fig. 3
The ROTAX 914 engine is provided with a dry sump forced lubri-
cation system with a main oil pump with integrated pressure regu-
lator (1) and an additional suction pump.
The main oil pump (2) sucks the motor oil from the oil tank (3) via
the oil cooler (4) and forces it through the oil filter to the points of
lubrication (lubricates also the plain bearings of the turbocharger
and the propeller governor).
NOTE: The oil cooler is optional.
The surplus oil emerging from the points of lubrication accumula-
tes on the bottom of crankcase and is forced back to the oil tank
by the piston blow-by gases.
The oil pumps are driven by the camshaft.
The oil circuit is vented via bore (5) on the oil tank.
The oil temperature sensor (9) for reading of the oil inlet tempera-
ture is located on the oil pump housing.
The turbocharger is lubricated via a separate oil line (7) (from the
main oil pump).
The oil emerging from the turbocharger collects in a stainless
steel oil sump and is sucked back to the secondary oil pump and
then pumpes back to the main oil tank via the oil line (8).
BRP-Powertrain page 7-6
April 01/2009