d04927.fm
INSTALLATION MANUAL
BRP-Powertrain
Effectivity: 912 Series
Edition 2/Rev. 0
79-00-00
page 7
August 01/2012
1.4) Measuring of the vacuum
Measuring of the
vacuum
See Fig. 3.
Measure the vacuum in the suction oil line (1) - from the oil tank via the oil
cooler to the engine oil pump - at a distance of max. 100 mm (4 in.) from
the oil pump suction connector (2).
At full throttle, the indicated vacuum (3) upstream of the oil pump must
not be less than 0.3 bar (4.35 psi), otherwise the oil hose (1) could col-
lapse and block the oil supply to the engine.
Non-compliance can result in serious injuries or
death!
The vacuum (3) (pressure gauge with liquid damping)
must be verified over the complete engine operation
range. If the oil is cold, the flow resistance increases,
which means that not enough oil will flow on the suc-
tion side.
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