S201 AFM
7 - AIRPLANE AND SYSTEMS
DESCRIPTION
7.9 - POWERPLANT
27/06/2019
SONAIR-S2-D-MAN-006
Page : 7-63
Rev. : A
7.9.3
LUBRIFICATION SYSTEM
The engine is provided with a dry sump forced lubrication system with a
camshaft driven main pump with integrated pressure regulator and additional
suction pump. The main pump delivers oil from the oil reservoir, through an oil
cooler (radiator) and oil filter to points of lubrication.
Surplus oil emerging from the points of lubrication gathers at the bottom of the
crankcase from where it is forced back to the oil reservoir by a piston blow-by
gasses.
Oil temperature is sensed by a sensor located on the oil pump housing.
The lubrication circuit is vented at the oil reservoir. The oil reservoir is located
on the firewall.
The turbocharger is supplied with oil via a separate oil line from the main pump.
Return oil from the turbocharger is collected in a stainless steel sump and is
sucked back to the suction pump and then pumped back to the oil reservoir via
a return line.
The lubrication system volume is approximately 3.5 litres (7.4 pints).
Oil type is Automotive grade API SG (or higher) type oil, preferably synthetic or
semi-synthetic.
Refer to the latest revision of the applicable Rotax engine and operator manuals
and the latest revision of the applicable Rotax service bulletins