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page 70
May 01/2007
Effectivity: 912 Series
Edition 1 / Rev. 0
d04055
INSTALLATION MANUAL
BRP-Rotax
13.3.2) Measuring of the pressure in the crankcase
Measure of the mean crankcase pressure at full load (blow-by gas
pressure) responsible for proper oil return from crankcase to oil tank.
A pressure indicator (4) (pressure gauge with incorporated viscous
damper) may be fitted instead of the magnetic plug (5) or the crankshaft
locking screw (6) (see Fig. 42).
◆
NOTE:
The connecting thread is M12x1.5 (metric) for the
magnetic plug and M8 for the crankshaft locking screw
(use always new gasket).
The pressure in the crankcase at full load must not exceed the
prevailing ambient pressure by more than 0,45 bar (6.53 psi) at 90 °C
(194 °F) oil temperature.
If both pressure readings are within the specified limits, under all
operating conditions, the lubrication circuit should be working suffi-
ciently.
▲
WARNING:
If the readings exceed the pressure limits then the flow
resistance of the oil from oil sump to oil tank (contami-
nation, restrictions of cross-section etc.) is too high.
This condition is unsafe and must be rectified without
delay.
max. 0,45 bar (6.53 psi) above at-
mospheric pressure
08324
Fig. 42
4
5
6
Содержание 912 ULS 3
Страница 1: ...45 5 0 6 03 305 9 5 1 4 3 4 QBSU OP 898642 305 9 6 4 8 5 015 0 4 2 2 4 3 Ref No IM 912...
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