Oil Pressure Check - VESPA GTV 125 Service Station Manual

Vespa GTV 125

Oil pressure check

- After removing the flywheel cover as described
in the "Flywheel" chapter, remove the electrical
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 ÷ 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 ÷ 4.2 atm.
- Remove the appropriate tools once the meas-
urement is complete, refit the oil pressure switch
and washer, tightening it to the specified torque
and fit the fan cover.
- If the oil pressure is outside 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 GOOD CONDITION.
Characteristic
Oil pressure
Minimum pressure admitted at 6000 rpm: 3.2 atm.
Locking torques (N*m)
Minimum oil pressure sensor 12 ÷ 14
Engine
ENG - 59