Rotax 915 i A series Maintenance Manual page 483

SYSTEM DESCRIPTION
The engines is provided with a dry sump forced lubri-
cation system with a main oil pump with integrated
pressure regulator.
Oil flow
The oil pump (driven by the camshaft) sucks the mo-
tor oil from the oil tank through the oil cooler and
forces it through the oil filter, through, to the points of
lubrication in the engine and the turbo charger. The
escaping oil emerging from the points of lubrication
accumulates on the bottom of crankcase and is
forced back to the oil tank by the piston blow-by
gases.
The ventilation of the oil system is done by the vent
fitting on the oil tank.
Turbocharger
The turbocharger is lubricated via a separate oil line
(from the main oil pump).
The oil emerging from the turbocharger collects in a
stainless steel oil sump and is sucked back, through
a finger sieve to the secondary oil pump and then
pumps back to the main oil tank via the oil line.
CRANKCASE
The engine oil emerging from the lubrication points
accumulates on the bottom of crankcase and is
forced back to the oil tank by the constant excessive
pressure in the crankcase (blow-by gases).
OIL PUMP
The oil pump is driven by the camshaft.
Effectivity: 915 i A Series
Edition 0/Rev. 0
BRP-Rotax
MAINTENANCE MANUAL HEAVY
SAFETY INSTRUCTION
m WARNING
Danger of severe burns and scalds! Always al-
low the engine to cool down to ambient tem-
perature before starting any work.
m WARNING
Danger of serious injury! During work on the
lubrication system there is a risk of injury due
to pressure!
• Ensure that the engine is in the horizontal position!
ENVIRONMENTAL NOTE
Please observe the disposal regulations appli-
cable in your area.
ENVIRONMENTAL NOTE
Observe the safety instructions of the manu-
facturer of hazardous substances (coolant, oil)
or fuels and the applicable regional waste dis-
posal regulations.
ENVIRONMENTAL NOTE
Work with the utmost care to ensure that no
water pollutants can penetrate into the soil,
water or the sewerage system.
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August 01 2018