APRILIA 8140172, Service And Repair Manual

Page: 146 / 279

ENGINE
RSV mille
3 - 63
ASSEMBLY
◆ Clean the diameter of the main bush housing and the
lubrication hole between the bush housings inside the
clutch cover.
◆ Determine the driving shaft bushes size group based
on the coloured markings (5) on the clutch cover.
NOTE
The size group of the main bushes is also
marked with a coloured dot.
◆ If the coloured marking applied on the clutch cover is no
longer clearly legible, calculate the diameter based on
the average of a number of different measurements.
a
CAUTION
Take a number of measurements, especially in the di-
rection of the axis of both cylinders.
◆ Heat the engine casing to approx. 130 °C (266 °F).
◆ Coat the main bushes and the bush housings in the
clutch cover with MOLYKOTE
®
G-N.
NOTE
Have the appropriate special tools
&
to hand:
– (6) cod. 0277727 (clutch cover driving shaft bush in-
serter pad);
– (7) cod. 0277729 (main countershaft bush inserter
pad).
◆ Place the driving shaft and countershaft main bushes
on the inserter pads (6 - 7), using a suitable O-ring (8)
to hold them in place.
◆ Line up the contact surface of the main bushes with the
previously applied coloured marking (3).
◆ With due care, insert the main bushes on a press until
the installer punch touches.
a
CAUTION
In order to insert the bushes, the clutch cover must
be supported around the bush housing.
◆ Remove the O-ring (8) before the installer punch
makes contact.
– The driving shaft main bushes must be flush with the
thrust-bearing surface (9).
– The countershaft bushes are assembled 1.0 mm fur-
ther down with respect to the thrust-bearing surface
(10).
a
CAUTION
Once disassembled, the bushes must not be reused.
M = MOLYKOTE
®
G-N.
Hole in the clutch
cover
Bush cover
marking
Clutch cover
marking
Ø32.921 - Ø32.930
mm
red red
Ø32.930 - Ø32.940
mm
blue blue
Ø32.940 - Ø32.951
mm
yellow yellow