PIAGGIO 500 cc, Service Manual

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10 - 4
Lubrication
DIAGNOSTICS GUIDE
- Remove the switch and install the special tool and
related gasket.
Specific tools:
Manometer
020193Y
Manometer union 020434Y
- Remove the dipstick with the oil loading plug and
insert a plug prepared with a temperature probe as
part of the specific tool.
Insert the probe until it comes into contact with the
bottom of the crankcase then pull it back a few
millimetres.
Specific tool:
Multimeter with temperature probe 020331Y
Lighting up of the minimum oil pressure indicator with a
warm engine.
Remove the electrical connector of the minimum pressure switch.
Check that the indicator lamp turns off.
Control the actual oil pressure.
Check and reset the electrical
system.
NO YES
Measure the pressure with a cold idling engine.
Standard values: 20°C Temperature
1400 rpm.
NOTE: The revolutions may be revealed by either the exhaust gas analyser or diagnosis
tester 020460Y.
⇒
~ 4.5 bar
YES NO
Allow the engine to warm up and repeat the control with warm oil.
Standard values: 80°C Temperature
1400 rpm.
⇒
~ 1,5 bar
NO YES
Replace the minimum
oil pressure switch.
Pressures of less than
1.3 - 1.5 bar revealed.
Pressures of less than 4 bar
revealed.