Crankshaft Classes; Main Bushings - APRILIA DORSODURO 1200 ABS - ATC Service Station Manual

Manuals by Motomatrix / www.motomatrix.co.uk / The Solution For Lost Motorcycle Coded Keys.
DORSODURO 1200 ABS - ATC
There are three crankshaft classes selectable for
each bearing:
•
4 - 5 - 6 for the flywheel side;
•
7 - 8 - 9 for the clutch side;
The class is stamped on the outer face of the
crankshaft counterweight.
NOTE
TWO DIFFERENT CRANKSHAFT CLASSES MAY BE POS-
SIBLE ON THE TWO BEARINGS.

Crankshaft classes 4 - 7

Crankshaft classes 5 - 8
Crankshaft classes 6 - 9
Once the categories below are checked:
•
crankcase
•
flywheel side main journal
•
clutch side main journal
choose the bushings used for assembly from the following table
See also
Removing the flywheel cover
Main journal
Class 4 main journal (l.v.)
Class 5 main journal (l.v.)
Class 6 main journal (l.v.)
Class 7 main journal (l.f.)
Class 8 main journal (l.f.)
Class 9 main journal (l.f.)
Crankcase class (internal marking on first gen-
eration crankcases)
Two different crankcase classes (A or B) are avail-
able, selected in relation to the centre-to-centre
distance between the primary reduction gears.
The class is indicated on the clutch side crankcase
half near the front cylinder area.
NOTE
IN THE EVENT OF CRANKCASE REPLACEMENT, THE PRI-
MARY REDUCTION GEAR IS SUPPLIED READY MESHED.
email: info@motomatrix.co.uk
C
RANKSHAFT CLASSES
Specification

MAIN BUSHINGS

Semi-bushing type E (green)
Semi-bushing type E (green)
Desc./Quantity
Main journals - diameter: 49.978 - 49.984 mm (1.9676 - 1.9679
Main journals - diameter: 49.972 - 49.978 mm (1.9674 - 1.9676
Main journals - diameter: 49.984 - 49.990 mm (1.9679 - 1.9681
Crankcase class 1
Semi-bushing type A (red)
Semi-bushing type B (blue)
Semi-bushing type A (red)
Semi-bushing type B (blue)
Characteristics
in)
in)
in)
Crankcase class 2
Semi-bushing type B (blue)
Semi-bushing type C (yellow)
Semi-bushing type A (red)
Semi-bushing type B (blue)
Semi-bushing type C (yellow)
Semi-bushing type A (red)
CHAR - 55