APRILIA 8140172, Service And Repair Manual

Page: 127 / 279

ENGINE
RSV mille
3 - 44
NOTE
Have the appropriate special tools
&
to hand:
– (12) cod. 0277725 (driving shaft bush inserter pad);
– (13) cod. 0277537 (countershaft bush inserter pad).
◆ Heat the engine casing to approx. 150° C (302° F).
◆
Coat the main bushes and bearing housings inside the
engine casing with MOLYKOTE
®
G-N.
◆ Place the driving shaft and countershaft main bushes
on the assembly pads (12 - 13) and fasten them with
an O-ring (14) suitable for the purpose.
◆ Line up the contact surface of the main bushes with the
previously applied coloured marking (7).
◆ With due care, insert the main bushes on a press, work-
ing from the inside out, until the installer punch touch-
es.
◆ Remove the O-ring (14) before the installer punch
makes contact.
a
CAUTION
In order to insert and remove the main bushes, the
engine casing must be supported by applying a spac-
er tube around the main bush housing.
◆ The lower main bush of the driving shaft, flywheel side,
features a lubrication hole (11).
Once assembled, make sure the lubrication hole (11) on
the main bush is lined up with the engine casing.
◆ The main bushes (1) of the driving shaft are fitted so
that they are 2.0 mm further down than the thrust-bear-
ing surfaces (3 - 4).
◆ The main bushes (2) of the countershaft are fitted so
that they are 1.5 mm further down than the thrust-bear-
ing surface (5).
a
CAUTION
Should the main bushes be assembled incorrectly,
they must be removed using the disassembly punch,
as described above.
Disassembled main bushes must not be reused.
M = MOLYKOTE
®
G-N.