VESPA GTS Super 300 ie 2008, Service Station Manual

Page: 167 / 317

- The solid half-bearing is intended to stand the
thrusts caused by combustion, and for this reason
it is arranged opposed the cylinder.
- To prevent shutters in the oil feeding channels,
the matching surface of the two half-bearings must
be perfectly orthogonal to the cylinder axis, as
shown in the figure.
- The oil feeding channel section is also affected
by the bushings driving depth compared with the
crankshaft axial clearance of the limiting surface.
N.B.
TO MEASURE WEAR LIMITS AND COUPLING CLEARANCES, SEE THE SPECIFICATIONS CHAP-
TER.
See also
Crankcase - crankshaft - connecting rod
Refitting the crankcase halves
- Fit the internal shield by locking the two screws
to the prescribed torque.
- Fit the oil filter fitting and tighten it to the prescri-
bed torque.
- Position the oil pre-filter element as shown in the
picture.
- Place a new gasket on one of the crankcase
halves, preferably on the transmission side, to-
gether with the alignment dowels.
- Lubricate the main bushings and insert the crank-
shaft in the transmission side crankcase half.
- Reassemble both crankcase halves.
- Fit the 10 screws and tighten them to the speci-
fied torque.
- Fit a new O-ring on the pre-filter and lubricate it.
- Insert the filter on the engine with the relative cap.
Tighten to the prescribed torque.
Locking torques (N*m)
Internal engine crankcase bulkhead (transmis-
sion-side half shaft) screws
4 to 6
Engine-crank-
case coupling screws
11 ÷ 13
Oil filter on
crankcase fitting
27 - 33
Engine oil drainage
plug/ mesh filter
24 to 30
Vespa GTS Super 300 ie (2008)
Engine
ENG - 167