Oil Pump; Countershaft; Oil Pump Assembly - PIAGGIO 500 cc Service Manual

Oil pump

- Overhaul the oil pump as described in Chapter 10-
Lubrication.

Countershaft

- Measure the 2 countershaft supports by means of a
micrometer, as shown in the figure.
Standard diameter: 17 - 0.01
- 0.02
- Check that the water pump drive shows no signs of
wear.

Oil pump assembly

- Check the gasket correct position.
N.B.: The gasket tooth must be positioned in the
relevant seat.
- Assemble the oil pump complete with the gear.
- Fit the 2 fixing screws through the slots on the gear
and then tighten them to the prescribed torque.
N.B.: The pump assembly position is determined by the
screws. Failure to observe the tightening torque may
change the rotors to pump casing allowance.
Tightening torque:
Oil pump fixing screws: 5 - 6 N·m
mm
Driving shaft crankcase
05_278
05_279
05_260
05_259
8 - 15
8