VESPA PX 150 USA, Workshop Manual

Page: 14 / 138

Crankcase - crankshaft - connecting rod
CONNECTING ROD - CRANKSHAFT. ASSEMBLY CLEARANCE «E» BETWEEN BIG END
AND HALF CRANKSHAFT ON FLYWHEEL-SIDE
Name Description Dimensions Initials Quantity
Connecting Rod A= 15,4 +0 -0,05 E 0,15 ÷ 0,46
Washer (2) G= 0,5 +0,05 -0,03 E 0,15 ÷ 0,46
Half-crankshaft clutch-
side
C= 11,1 -0 +0,05 E 0,15 ÷ 0,46
Half-crankshaft fly-
wheel-side
D= 11,1 -0 +0,05 E 0,15 ÷ 0,46
Spacer tool H= 38,95
CONNECTING ROD - CRANKSHAFT. ASSEMBLY CLEARANCE «F» BETWEEN BIG END
ROLLER CAGE AND HALF CRANKSHAFT ON FLYWHEEL-SIDE
Name Description Dimensions Initials Quantity
Connecting Rod B= 15,6 -0,1 -0,2 F 0,05 ÷ 0,41
Washer (2) G= 0,5 +0,05 -0,03 F 0,05 ÷ 0,41
Half-crankshaft clutch-
side
C= 11,1 -0 +0,05 F 0,05 ÷ 0,41
Half-crankshaft fly-
wheel-side
D= 11,1 -0 +0,05 F 0,05 ÷ 0,41
Spacer tool H= 38,95
−
Connecting rods and roller cages are subdivided into 4 categories (indicated by markings on big end
and outer cage rim, respectively)
−
Mate connecting rod with cage of same category ; if such assembly results to be excessively noisy,
use a roller cage from next category .
−
For the wrist pin, fitted with 0 clearance, the maximum allowable play after use must be 0.02 mm.
Characteristics
Vespa PX 150 USA
CHAR - 14