VESPA GTS Super 125 i.e. Service Station Manual page 21

Vespa GTS Super 125 i.e.
Crankcase - crankshaft - connecting rod
- Measure the diameter of bushings «A» in the
three directions shown in the figure.
- Measure the diameter of the crankshaft bearings
«B».
- Check that the diametral clearance «A-B» is be-
tween the pre-set interval.
Characteristic
Diameter clearance
0.023 - 0.041 mm
If value «A-B» is above the limit, check that value «B» is within the admissible values of the categories.
Specification
Category 1
Category 2
If the crankshaft is within the set limits, replace the crankshaft half-bearings mounting the crankcase
so as to suit the specified couplings. The crankcase halves can be mounted with four types of crankshaft
half-bearings identified by letters- B (blue), C (yellow), E (green).
Specification
Category 1
Category 2
CRANKCASE - CRANKSHAFT COUPLING / CRANKSHAFT HALF-BEARINGS
Specification
Crankshaft category 1 - Crankcase category 1
Crankshaft category 2 - Crankcase category 1
Crankshaft category 1 - Crankcase category 2
Crankshaft category 2 - Crankcase category 2
C
RANKSHAFT
CRANKCASE
Characteristics
Desc./Quantity
28.998 to 29.004
29.004 to 29.010
Desc./Quantity
32.959 - 35.965
32.953 to 32.959
Desc./Quantity
E+E
C+C
C+C
B+B
CHAR - 21