APRILIA M191M, Руководство по ремонту, Страница: 74 / 177

ENGINE
3 - 50
Engines M192M / M191M / M245M / M234M / M282M / M281M
3.3. LUBRICATION
3.3.1. CHECKING THE OIL PRESSURE
•
After having removed the flywheel cover as described
under section 4, disconnect oil min pressure switch
connector (1) and remove switch (2).
•
Provide yourself with the following tools:
Oil pressure gauge (A)
Pressure gauge coupling 8140181 (B)
Multimeter with temperature probe (C)
•
Insert coupling (B) into switch (2) thread.
• Fit gauge (A) onto coupling and insert multimeter probe
into the oil filler cap.
• With the engine running at an idling speed of 1650 rpm
and the oil at a temperature of ~90°C, check that oil
pressure is between 0.5 and 1.2 atm.
•
With the engine running at 6000 rpm and the oil at a
temperature of ~90°C, check that oil pressure is be-
tween 3.2 and 4.2 atm.
•
Once finished, remove the special tools previously in-
stalled on engine, then refit oil pressure switch (1) with
its washer. Tighten switch to the specified torque, con-
nect the “oil min. pressure switch (1)” connector and
refit flywheel cover.
•
In case pressure readings are outside the specified
limits check, in a sequence, oil filter, by-pass valve, oil
pump and crankshaft seals.
NOTE This check shall be carried out with a perfect oil level
and with the oil filter in good conditions.
Min. allowed pressure at 6000 rpm: 3.2 atm.
TIGHTENING TORQUE VALUES
Tightening torque: 12 ÷ 14 Nm (also for check coupling).