APRILIA ETX 125 - 1998 Manual page 47

a
The vehicle may fall down.
Provide for balancing the vehi-
cle, in order to prevent it from
falling down.
Make sure that the vehicle is stable.
Place a support (7) under the tyre, in such
a way as to keep the wheel in the correct
position after releasing it.
Rotate the left chain adjuster cam (8)
completely clockwise (end of stroke).
Rotate the right chain adjuster cam (9)
completely anticlockwise (end of stroke).
c
Lower the drive chain (10) out-
side the crown gear (11).
a
Do not introduce your fingers
between the chain and the crown
gear.
Move the wheel completely forward;
release the drive chain from above, ro-
tating the rear wheel anticlockwise.
c
Upon reassembly, introduce the
drive chain from below, rotating
the rear wheel in the travelling direc-
tion.
Unscrew and remove the wheel nut (4)
and take the washer (12).
Remove the left chain adjuster cam (8).
c
To facilitate the extraction of the
wheel pin, slightly raise the
wheel.
Hold the rear wheel and manually with-
draw the wheel pin (3).
Take the spacer ring (13).
Take the right chain adjuster cam (9).
Withdraw the wheel from the rear fork
from behind, carefully withdrawing the
disc from the brake caliper.
a
Never pull the rear brake lever
after removing the wheel, other-
wise the caliper piston may go
out of its seat, thus causing the outflow
of the brake fluid. In this case consult
your aprilia Official Dealer, who will
carry out the proper maintenance oper-
ation.
c
Check the arrangement of the
spacer rings (14) and (15), in
order to be able to reassemble them
correctly.
Take the left spacer ring (14).
Take the right spacer ring (15).
Upon reassembly:
Moderately grease the outer seats of the
wheel hub.
Fit the spacer rings (13) (14) (15) with
the longer diameter towards the outside
of the vehicle.
Make sure that the slot (16) in the brake
caliper support plate (17) is correctly
located in the lug (18) on the inside of
the rear fork left leg.
Uniformly apply a moderate quantity of
grease on the wheel pin (3).
a
After reassembly, pull the rear
b r a k e l e v e r r e p e a t e d l y a n d
check the correct functioning of
the braking system.
Check the wheel centering.
Have the driving torques, centering and
balancing of the wheel checked by your
aprilia Official Dealer, in order to avoid
accidents that may be harmful for you
and/or other people.
use and maintenance ETX 125 47