APRILIA SCARABEO 500 2008 Service Station Manual page 27

SCARABEO 500
•
Measure the diameter of bushings «A»
at the three positions indicated in the
figure.
•
Measure the diameter of crankshaft
bearings «B».
•
Check that diametral clearance «A-B»
is within the pre-set gap.
Characteristic
Diametral clearance
0.025 ÷ 0.043 mm
If value «A-B» exceeds the limit value, check that value «B» is within the values allowed for the cate-
gories.
Specification
Type 2
Type 1
If the crankshaft is within the set limits, replace the crankshaft half-bearings arranging the crankshaft
so as to match the specified couplings. The crankcase halves can be equipped with four types of
crankshaft half-bearings identified by letters A (red), B (blue), C (yellow) and D (green).
Specification
Type 1
Type 2
Type 3
CRANKCASE - CRANKSHAFT COUPLING / CRANKSHAFT HALF-BEARINGS
Specification
Crankshaft Type 1 - Crankcase Type 1
Crankshaft Type 2 - Crankcase Type 1
Crankshaft Type 1 - Crankcase Type 2
Crankshaft Type 2 - Crankcase Type 2
Crankshaft Type 1 - Crankcase Type 3
Crankshaft Type 2 - Crankcase Type 3
CRANKSHAFT
CRANKCASE
Characteristics
Desc./Quantity
40.026 ÷ 40.032
40.020 ÷ 40.026
Desc./Quantity
43.974 ÷ 43.980
43.980 ÷ 43.986
43.986 ÷ 43.992
Desc./Quantity
B + B, A+C
A+A
C + C, B+D
B + B, A+C
D+D
C + C, B+D
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