Inspecting The Crankshaft Alignment - PIAGGIO Carnaby 125 Service Station Manual

Carnaby 125 - 200
MODIFIED BY THE RADIUSES OF FITTINGS WITH THE
CRANKSHAFT BEARINGS.
N.B.
The crankshaft of the 200 cm³ version has two steel shim
washers. Take note of their fitting position.
Specific tooling
020262Y Crankcase splitting strip
Characteristic
Crankshaft bearings: Standard diameter: Cat.
2
29.000 ÷ 29.006
Crankshaft bearings: Standard diameter: Cat.
1
28.994 ÷ 29.000
Engine crankcase opening: Standard thick-
ness:
2.175 ÷ 2.225 mm
Width of the crankshaft with shim washers:
standard measurements
51.40 ÷ 51.45 mm
Engine crankcase opening: standard meas-
urements
55.75 ÷ 55.90 mm (125)
Radial connecting rod - crankshaft clearance
Standard clearance
0.036 ÷ 0.054 mm
Axial connecting rod - crankshaft clearance
Standard clearance
0.20 ÷ 0.50 mm
Axial crankshaft/crankcase clearance: Stand-
ard clearance
0.15 - 0.40 mm (when cold)

Inspecting the crankshaft alignment

To install the drive shaft on the support and to
measure the misalignment in the 4 points indicated
in figure.
- Check that the driving shaft cone, the tab seat,
the oil seal capacity, the toothed gear and the
threaded tangs are in good working order.
- In case of failures, replace the crankshaft.
Engine
ENG - 157