Effectivity 912/914 Series
Edition 1 / Rev. 0
79-00-00
page 3
May 01/2007
d02628
BRP-Rotax
Maintenance Manual
2) Systems description
2.1)
Lubrication system
See Figs. 79-1 and 79-2.
ROTAX engine types of the 912/914 Series are equipped with a dry sump forced
lubrication and a main oil pump with integrated pressure regulator. The ROTAX
914 Series has an additional suction pump for the turbocharger oil circuit.
◆
NOTE:
The oil pumps are driven by the camshaft.
The
main oil pump
sucks the engine oil from the oil tank (1) via the oil cooler
(2) and forces it through the oil filter to the individual points of lubrication
(lubricates also the bearings of the turbocharger and the propeller governor).
The surplus engine oil emerging from the points of lubrication accumulates on
the bottom of the crankcase and is forced back to the oil tank by the blow-by
gases.
◆
NOTE:
The oil temperature sensor (6) is located on the oil pump flange
and measures the oil feed temperature.
The oil circuit is vented via bore (5) in the oil tank, where the
blow-by gases leave the system.
On engines of the 914 Series, the turbocharger is lubricated via a separate oil
line (3) from the main oil pump.
The oil emerging from the turbocharger collects in the oil sump and is pumped
back to the oil tank by a separate
suction pump
via the oil line (4).
Summary of Contents for MMH-912 Series
Page 463: ......
