PIAGGIO 633929(IT), Service Station Manual, Page: 155 / 314

Oil pump
- Check there are no signs of wear on the oil pump
shaft or body.
- Check there are no signs of scoring or wear on
the oil pump cover.
- If you detect non-conforming measurements or
scoring, replace the faulty parts or the unit.
- Fit the pump cover in the position that permits the
crankcase fixing screws to be aligned.
- Make sure the gasket is positioned properly and
refit the pump on the engine crankcase. The pump
can only be fitted in one position. - Tighten the
screws to the prescribed torque.
- Fit the sprocket wheel with a new O-ring.
- Fit the chain.
- Fit the central screw and the belleville washer.
Tighten to the prescribed torque.
- Fit the oil pump cover by tightening the two
screws to the prescribed torque.
N.B.
FIT THE BELLEVILLE WASHER SO THAT ITS
OUTER RIM TOUCHES THE PULLEY. MAKE
SURE THAT THE PUMP TURNS FREELY.
Locking torques (N*m)
Screws fixing oil pump to the crankcase 5 - 6
Oil pump control crown screw 10 ÷ 14 Oil pump
cover screws 0.7 ÷ 0.9
Removing the oil sump
- Remove the oil filler plug, the transmission cover,
the complete driving pulley assembly with belt and
the sprocket wheel, as described in the "Trans-
mission" chapter.
- Drain the oil as described previously.
- Remove the seven screws, shown in the dia-
gram, and the two rear brake fluid pipe fixing
brackets.
MP3 125
Engine
ENG - 61