VESPA LX 4T USA Workshop Manual page 15

LX 4T USA
Crankcase - crankshaft - connecting rod
END PLAY BETWEEN DRIVING SHAFT AND CONNECTING ROD
Name
Transmission side half
shaft
Flywheel side half shaft
Connecting rod
Spacing tool
Slot packing system
N.B.
MEASUREMENT "A" TO BE TAKEN IS A VALUE OF PISTON RE-ENTRY, IT INDICATES BY HOW
MUCH THE PLANE FORMED BY THE PISTON CROWN FALLS BELOW THE PLANE FORMED BY
THE TOP OF THE CYLINDER. THE FURTHER THE PISTON GETS INSIDE THE CYLINDER, THE
THINNER THE HEAD GASKET TO BE APPLIED SHOULD BE (TO RECOVER THE COMPRESSION
RATIO) AND VICE VERSA.
Characteristic
Shimming system to control the compression ratio
CR: 11.1 ÷ 12.9
Name
shimming_1
shimming_2
Description Dimensions
14 +0 -0.005
16 +0 -0.005
14.8 +0.05 -0
45,00 / assembly
games D = 0,15 ÷ 0,30
PISTON PROTRUSION CHECK
Measure A
0.05 ÷ 0.25
0.25 ÷ 0.40
Characteristics
Initials Quantity
A
B
C
E
Thickness
0.35
0.25
CHAR - 15