TO KEEP THIS POSITION OF THE BUSHINGS ON THE
CRANKCASE, FITTING IS FORCED ON STEEL RINGS IN-
SERTED IN THE CASTING OF BOTH CRANKCASE
HALVES.
Characteristic
Standard driving depth
1.35 ÷ 1.6
- 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.
- The standard bushing diameter after driving is variable on the basis of a coupling selection.
- The bushing housings in the crankcase are classified into 2 categories - Cat. 1 and Cat. 2 - just like
those for the crankshaft.
3 - The main bushings are subdivided into 3 thickness categories; see the table below:
NOTE
DO NOT TAKE THE MEASUREMENT ON THE TWO HALF-SHELL COUPLING SURFACE SINCE
THE ENDS ARE RELIEVED TO ALLOW BENDING DURING THE DRIVING OPERATION.
MAIN BEARINGS
Specification
Desc./Quantity
B Blue
C Yellow
E Green
Refitting the crankcase halves
- Fit the internal bulkhead by locking the two
screws to the prescribed torque.
Locking torques (N*m)
Locking torque 4 ÷ 6
Engine SPORTCITY ONE 125
ENG - 108
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