Suzuki XL7 2007 Service Manual page 1300

4B-28 Front Brakes:
8. After refinishing the brake rotor, use the following
procedure in order to obtain the desired non-
directional finish:
a. Follow the brake lathe manufacturer's
recommended speed setting for applying a non-
directional finish.
b. Using moderate pressure, apply the non-
directional finish:
– If the lathe is equipped with a non-directional
finishing tool, apply the finish with 120-grit
aluminum oxide sandpaper.
– If the lathe is not equipped with a non-
directional finishing tool, apply the finish with a
sanding block and 150-grit aluminum oxide
sandpaper.
c. After applying a non-directional finish, clean
each friction surface of the brake rotor with
denatured alcohol, or an equivalent approved
brake cleaner.
9. Remove the lathe from the vehicle.
10. Measure the assembled LRO of the brake rotor.
Refer to "Brake Rotor Assembled Lateral Runout
Measurement: ".
11. If the brake rotor assembled LRO measurement still
exceeds the maximum allowable specification, refer
to "Brake Rotor Assembled Lateral Runout
Correction: ".
12. If the brake rotor assembled LRO is within
specification, install the brake caliper and depress
the brake pedal several times to secure the rotor in
place before removing the J 45101-100 and the lug
nuts.
Brake Rotor Refinishing
Special tool
J 41013 Rotor Resurfacing Kit
J 42450-A Wheel Hub Resurfacing Kit
WARNING
!
Refer to "Brake Dust Caution: ".
NOTE
• The disc brake rotors do not require
refinishing as part of routine brake system
service. New disc brake rotors do not
require refinishing.
Do not refinish disc brake rotors in an
attempt to correct the following
conditions:
– Brake system noise - squeal, growl,
groan
– Uneven and/or premature disc brake pad
wear
– Superficial or cosmetic corrosion/rust of
the disc brake rotor friction surface
– Scoring of the disc brake rotor friction
surface less than the maximum
allowable specification
• Before refinishing a brake rotor, the rotor
MUST first be checked for adequate
thickness to allow the rotor to be
refinished and remain above the minimum
allowable thickness after refinish
specification. Refer to "Brake Rotor
Thickness Measurement: ".
Disc brake rotors should only be
refinished if they have adequate thickness
to be refinished and if one or more of the
following conditions exist:
– Thickness variation in excess of the
maximum allowable specification
– Excessive corrosion/rust and/or pitting
– Cracks and/or heat spots
– Excessive blueing discoloration
– Scoring of the disc brake rotor surface
in excess of the maximum allowable
specification
• Disc brake rotors may need to be
refinished as part of the process for
correcting brake rotor assembled lateral
runout (LRO) that exceeds the maximum
allowable specification.
NOTE
If the vehicle is equipped with cross-drilled
rotors, use a lathe with positive rake tooling.
This setup requires less cutting pressure,
which will result in less vibration, and a
better surface finish. Also, use a vibration
dampener when cutting. Otherwise, refinish
according to the following instructions.
NOTE
Whenever the brake rotor has been separated
from the hub/axle flange, clean any rust or
contaminants from the hub/axle flange and
the brake rotor mating surfaces. Failure to do
this may result in increased assembled
lateral runout (LRO) of the brake rotor, which
could lead to brake pulsation.
1. Using the J 42450-A, thoroughly clean any rust or
corrosion from the mating surface of the hub/axle
flange.
2. Using the J 41013, thoroughly clean any rust or
corrosion from the mating surface and mounting
surface of the brake rotor.
3. Inspect the mating surfaces of the hub/axle flange
and the rotor to ensure that there are no foreign
particles or debris remaining.