PIAGGIO 500 cc Service Manual page 224

Replace the oil filter and repeat the pressure control with oil at 80°C.
The anomaly is resolved.
Recommend respect for the advised
miles covered.
Remove the flywheel cover and proceed with efficiency checks of the by-pass and seal of the
cover towards the crankcase inner side, as described in chapter 5 - FLYWHEEL COVER.
Check the presence of anomalous clearances on the driving shaft:
Proceed with engine overhaul (chapter 8-
CRANKCASE AND DRIVING SHAFT MOTOR).
NOTE: Any anomalies discovered in the couplings and timing components are not revealable through lubrication
pressure control. These may occur with a noise increase.
NOTE: Revealing pressure anomalies on the crankcase it is always advisable to proceed with visual and dimensional
controls of the timing components (see chapter 7-THERMAL UNIT AND TIMING SYSTEM).
YES
YES
- end play (see chapter 8-CRANKCASE AND DRIVING SHAFT)
- radial play especially in the cylinder axis direction
- play according the the rotational direction of the connecting rod in quadrature
YES
Replace damaged components
(chapter 5-FLYWHEEL COVER).
Open the engine crankcase and proceedwith with
removal of the oil pump, as described in chapter 8-
CRANKCASE AND DRIVING SHAFT.
Proceed with oil pump control as described
in the following pages.
Check correct assembly of the cooling
nozzle and the timing feed jet.
Visually check the dimensions of the
couplings concerning the driving shaft
(chapter 8-CRANKCASE AND DRIVING SHAFT).
Lubrication
NO
NO
NO
10 - 5
10