PIAGGIO 2005 XEVO 400ie, Workshop Manual

Page: 155 / 376

- Check the inside diameter of the main bushings
in the three directions indicated in the diagram.
- Repeat the measurements for the other bushing
half. see diagram.
N.B.
DO NOT TAKE THE MEASUREMENT ON THE TWO HALF-
SHELL COUPLING SURFACE SINCE THE ENDS ARE RE-
LIEVED TO ALLOW BENDING DURING THE DRIVING
OPERATION.
Before assembling, check that the clearance between the engine crankcase bushing and the crankshaft
is within the predetermined limits.
Characteristic
Crankshaft-bushing maximum clearance admitted:
0.08 mm
- The standard bushing diameter after driving is variable on the basis of a coupling selection.
- The crankcase bushing seats are classified into 3 categories while the crankshaft ones, into 2 cate-
gories.
- Bushings are subdivided into 4 categories according to their thickness (see the table).
CHECK THE BENCH BUSH
Name Description Dimensions Initials Quantity
Type A - Red 1.971 ÷ 1.974
Type B - Blue 1.974 ÷ 1.977
Type C - Yellow 1.977 ÷ 1.980
Type D - Green 1.980 ÷ 1.983
Coupling chart
The following kinds of bushings indicated in the table must be used according to the kind of coupling
between the crankshaft and the crankcase.
XEVO 400ie
Engine
ENG - 155