Disassembling The Final Drive Unit - APRILIA SL Mille Workshop Manual

SL mille
7.3.2 DISASSEMBLING THE FINAL DRIVE UNIT
Carefully read 0.4.1 (PRECAUTIONS AND GENERAL
INFORMATIONS).
• Remove the wheel, see 7.3.1 (REMOVING THE
WHOLE WHEEL).
NOTE
In the event only the sprocket is to be rernoved..
skip the operations described in the following eight
points.
• Use a cloth to clean both sides of the hub.
• Remove the left spacer (1).
When reassembling, the left spacer (1) must be posi-
............................ tioned with the side featuring the greatest diameter
fa~ing
the fork's left leg.
• Remove the seal (2).
• Remove the snap ring (3).
• Tap on an appropriate drift rested on the spacer (4) to
remove the following components in theqiven order:
- bearing (5) with spacer (6);
- bearing (7) with spacer (4).
• Slide the bearing (5) off the spacer (6).
• Slide the bearing (7) off the spacer (4).
The bearings must be checked and, if necessary,
changed every time they are disassembled.
• Thoroughly clean the inside of the hub.
NOTE
Wash all the .components with a clean deter-
gent.
When reassembling, use a drift with the same diame-
ter as' the outer race to insert the bearings.
Do not strike the balls and/or the inner race.
Make sure that the inner bearing (7) is perfectly in
contact.
• Slide off the five flexible coupling bushes (8).
If necessary, proceed as follows:
Sprocket holder nuts driving torque: 50 Nm (5.0 kgm).
• Unscrew and remove the five nuts (9).
After each disassembly, change the crown nuts (9)
with new nuts of the same type.
• Slide off the five screws (10).
• Remove the sprocket (11).
• Clean the seat of the sprocket (11) and sprocket holder
(12) thoroughly.
When reassembling, tighten the nuts (9) without the
sprocket holder (12) fitted on the wheel.
The tightening operation must be performed in two
phases, proceeding as illustrated.
1 0 phase (tightening)
=
A-B-C-D-E.
2 0 phase (checking)
=
F-G-H-I-L.
CHASSIS
Release 00/2001-05 - - - - - - - - - -
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47 -
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