APRILIA ATLANTIC 500, Workshop Manual

Page: 156 / 170

Cycle parts
chap. 7
7-33
7
Release 00 2002-09
Atlantic 500
CHECKING THE BRAKE DISC
This check must be done with the brake disc
installed on the wheel.
Make a visual check of the brake disc surface.
If there are any lines or signs of wear, replace the
disc, see (REMOVING THE BRAKE DISC).
Check the brake disc for wear by measuring the
minimum thickness in different points using a mi-
crometer.
If the minimum thickness is less than the limit value,
even in a single point, replace the disc.
Minimum brake disc thickness value: 0.137 in (3.5 mm)
Use a dial indicator to check that disc oscillation does
not exceed tolerance levels and if it does, replace the
disc.
Brake disc oscillation tolerance: 0.004 in (0.1 mm)
CAUTION
REMOVING THE BRAKE DISC
Read carefully (PRECAUTIONS AND GENERAL
INFORMATION).
Remove the front wheel, see (REMOVING THE
FRONT WHEEL).
Unscrew and remove the five brake disc screws (7).
NOTE
Screw in the screws manually and tighten
them up in diagonal order, in the following sequence:
A-B-C-D-E. Check the disc rotation direction.
When refitting, apply LOCTITE ® 270 to the brake
disc screw threads.
Remove the brake disc.
CAUTION
REAR BRAKE
For general information, see (BRAKE FLUID).
For information about the following:
Brake system parts, see (BRAKING SYSTEM).
Brake pad wear checks, see (CHECKING THE WEAR
OF THE BRAKE PADS).
Bleeding the brake system, see (BLEEDING THE
BRAKING SYSTEM).