BRP-Rotax
INSTALLATION MANUAL
MEASURING OF THE VACUUM
Figure 12.3: Measuring of the vacuum
1 Suction oil hose 2
Oil pump housing
3
Pressure gauge with liquid damping for
vacuum
Measure the vacuum in the suction oil hose- from the oil tank via the oil cooler to the en-
gine oil pump - at a distance of max. 100 mm (4 in.) from the oil pump suction connector.
If crankcase pressure and measuring pressure of the vacuum readings and all operational
data (flight attitude, temperatures, etc.) are within the specified limits, then it can be as-
sumed that the oil circuit is working correctly.
Pressure loss Pressure loss in suction line (p_ambient – p_oil pump inlet) must not exceed 350 mbar (5
psi) between 70 °C – 90 °C (158 °F – 194 °F) oil temperature.
Effectivity: 916 i A / C24
Edition 0/Rev. 1
79–00–00
Page 5
December 01 2023
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