Oil Pressure Check; Crankshaft Oil Seals - VESPA LX 150 4T Euro 3 Service Station Manual

Vespa LX 125 - 150 4T Euro 3

Oil pressure check

- After removing the cover protections as descri-
bed in the "Flywheel" chapter, disconnect the elec-
trical connexion of the minimum oil pressure
switch and then remove the switch.
- With the engine idling at 1650 rpm and the oil
temperature at ~90°C, check that the oil pressure
is between 0.5 to 1.2 atm.
- With the engine idling at 6000 rpm and the oil
temperature at ~90°C, check that the oil pressure
is between 3.2 to 4.2 atm.
- Remove the appropriate tools once the meas-
urement is complete, refit the oil pressure switch
and washer, tightening it to the prescribed torque
and fit the flywheel cover.
- If the oil pressure is not within the specified limits,
in the following order, check: the oil filter, the oil
by-pass valve, the oil pump and the crankshaft
seals.
N.B.
THE CHECK MUST BE CARRIED OUT WITH OIL AT THE
CORRECT LEVEL AND WITH AN OIL FILTER IN PROPER
CONDITION.
Characteristic
Minimum pressure admitted
3.2 atm.
Locking torques (N*m)
Locking torque
12 to 14 (also valid for the control con-
nector).

Crankshaft oil seals

Engine
ENG - 121