APRILIA 8140172, Service And Repair Manual

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SERVICE AND SETTING UP
2 - 32
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Carefully read 0.2.1 (PRECAUTIONS AND GENERAL
INFORMATIONS).
The brake control lever is positioned ergonomically dur-
ing the assembly of the vehicle.
If necessary, it is possible to adjust the brake control lever
clearance:
◆ Remove the lower fairing, see 7.1.32 (REMOVING
THE LOWER FAIRING).
◆ Tighten the lock nut (1).
◆ Unscrew the pump control rod (2) to ensure a minimum
clearance of 0.5 – 1 mm between the rod and the pump
piston.
a
CAUTION
Make sure that there is a certain idle stroke in the
movement of the lever, to prevent the brake from re-
maining applied and the consequent untimely wear of
the braking elements.
Lever (3) idle stroke:
4 mm (measured at the lever end).
◆ Lock the pump control rod by means of the lock nut (1).
a
CAUTION
After the adjustment, make sure that the wheel ro-
tates freely with released brake.
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The wear of the disc brake pads depends on the use, on
the kind of drive and on the road.
NOTE
The following information refer to a single brak-
ing system, but are valid for both.
To carry out a rapid checking of the wear of the pads, pro-
ceed as follows:
◆ Position the vehicle on the side stand on firm and level
ground.
◆ Carry out a visual check between the disc and the
pads, proceeding:
– from below, on the front part, for the front brake cali-
pers (4);
– from below, on the rear part, for the rear brake caliper
(5).
a
CAUTION
The excessive wear of the friction material would
cause the contact of the pad metal support with the
disc, with consequent metallic noise and production
of sparks from the caliper; braking efficiency, safety
and soundness of the disc would thus be negatively
affected.
◆ If the thickness of the friction material (even of one pad
only) has reduced to about 1 mm (or if even only one of
the wear indicators is not visible any longer), change
both pads.
– Front pad (6), see 7.5.1 (CHANGING THE BRAKES
PADS).
– Rear pad (7) see 7.6.1 (CHANGING THE BRAKE
PADS).
6
7
1mm
1mm
1mm
1mm