52
use and maintenance RS 125
REAR WHEEL
The disassembly and
reassembly of the rear wheel
may be difficult for unskilled
operators. If necessary, contact an
aprilia Official Dealer.
If you want to perform these operations
personally, keep to the following
instructions.
Carefully read page 43
(MAINTENANCE).
Before carrying out the following
operations, let the engine and the silencer
cool down until they reach room
temperature, in order to avoid burns.
While disassembling and
reassembling the wheel, be
careful not to damage the brake
pipe, the disc and the pads.
To remove the rear wheel it is
necessary to use the appropriate
rear support stand
-.
DISASSEMBLY
u
Position the vehicle on the appropriate
rear support stand, see page 47
(POSITIONING THE VEHICLE ON THE
FRONT SUPPORT STAND J).
Brake caliper screw (13) driving torque:
22 Nm (2.2 kgm).
u
Unscrew and remove the two screws (13)
that fasten the rear brake caliper (11).
u
Withdraw the brake caliper from the disc,
leaving it attached to the pipe (11).
Wheel nut (1) driving torque:
100 Nm (10 kgm).
u
Loosen and remove the nut (1), taking
the washer.
u
Put a support (2) under the tyre, in such
a way as to keep the wheel in its position
after loosening it.
u
Withdraw the wheel pin (3) from the right
side.
Check the arrangement of the
right (4) and left (5) chain
tighteners, in order to be able to
reassemble them correctly.
u
Take the right (4) and left (5) chain
tighteners.
Lower the drive chain (6) outside
the crown gear (7).
u
Make the wheel advance and release the
drive chain (6) from the crown gear (7).
u
Withdraw the wheel from the rear fork
from behind, carefully withdrawing the
disc from the brake caliper.
Never pull the rear brake lever
after removing the wheel,
otherwise the caliper pistons
may go out of their seats, thus causing
the outflow of the brake fluid. In this
case consult your aprilia Official
Dealer, who will carry out the proper
maintenance operation.
Check the arrangement of the
spacer rings (8) and (9), in order
to be able to reassemble them correctly.
13
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