Effectivity: 912 Series
Edition 1 / Rev. 1
d04636
page 69
May 01/2009
BRP-Powertrain
INSTALLATION MANUAL
13.3) Checking of the lubrication system
To control the proper function of the lubrication system the following readings
have to be taken on the running engine as part of the test/qualification
procedure.
◆
NOTE:
The required pressure gauges and connection parts are not
included in the BRP-Powertrain engine delivery.
13.3.1) Measuring of the vacuum
Measuring of vacuum in the oil suction line (1) (line from oil tank to oil
pump via oil cooler) at a max. distance of 100 mm (4 in) from pump inlet
(2).
At take-off performance the indicated vacuum (3) must not be more
than 0,3 bar (4.35 psi) otherwise the oil hose (1) could collapse and thus
blocking the oil supply to the engine (Fig. 41).
▲
WARNING:
The vacuum (3) must be verified over the total range
of engine operation. Specially on cold oil temperature
the flow resistance increases, so that not enough oil
can flow on suction side.
Fig. 41
09161
2
3
1
max. 0.3 bar (4.35 psi) below atmospheric pressure
