PIAGGIO PORTER 1.3 16V 2008, Service Manual

Page: 309 / 892

Connecting rod replacement
Wash connecting rods using solvent.
Connecting rod bushing selection
1. Read the category of the connecting rod.
- BE CAREFUL TO PROTECT EYES WITH PROTECTIVE
GOGGLES.
2. Measure the diameter of each connecting rod
pin in four directions, distanced 90° one from the
other, at the points indicated in the figure.
The values indicated are in millimetres.
- THE LARGER VALUE MEASURED DEFINES THE CON-
NECTING ROD PIN DIAMETER. NEVERTHELESS, IF THE
DIFFERENCE AMONG ALL THE VALUES MEASURED EX-
CEEDS 0.044 MM, REPLACE THE CRANKSHAFT.
3. Select the connecting rod bushings according the following table.
CONNECTING ROD HEAD TYPES
Name Description Dimensions Initials Quantity
Category 5 50.000 - 49.995 1
Category 5 49.994 - 49.989 2
Category 5 49.998 - 49.983 3
Category 5 49.982 - 49.976 4
Category 5 49.975 or less -
Category 6 50.000 - 49.995 2
Category 6 49.994 - 49.989 3
Category 6 49.998 - 49.983 4
Category 6 49.982 - 49.976 5
Category 6 49.975 or less -
Category 7 50.000 - 49.995 3
Category 7 49.994 - 49.989 4
Category 7 49.998 - 49.983 5
Category 7 49.982 - 49.976 6
Category 7 49.975 or less -
Category 8 50.000 - 49.995 4
Category 8 49.994 - 49.989 5
Category 8 49.998 - 49.983 6
Category 8 49.982 - 49.976 7
Category 8 49.975 or less -
PORTER 1.3 16V
Engine
EN - 309