There are no selection classes for the countershaft bushings, there is only one type.
CRANKSHAFT BUSHINGS - CONNECTING RODS
Three types of semi-bushing are available:
•
Blue
•
Red
•
Yellow
There are no dimension classes for the crank pins or the connecting rods. As a result, only the two
semi-bushing combinations are possible:
1. BLUE - BLUE (recommended solution)
2. YELLOW - RED (if combination 1 is not possible)
In combination 2, the YELLOW semi-bushing must be installed on the connecting rod shank and the
RED semi-bushing must be installed on the cap.
CRANKSHAFT BUSHING REPLACEMENT PROCEDURE
When replacing the big end bushings, make sure that the tang of the semi-bushing is correctly housed
in the corresponding notch in the connecting rod shank or cap
Bearing fitting
BALANCING COUNTERSHAFT BEARING INSTALLATION
FLYWHEEL-SIDE
•
Heat up the crankcase to 150°C (302°F).
•
Prepare the following tools:
Specific tooling
020364Y 25 mm Adaptor
020359Y 42 x 47 mm punch
020376Y Adapter handle
Engine TUONO V4 R
ENG - 330
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