Audi Q7 2007 Repair Manual page 9

Note
Maximum lateral run-out of steel brake rotor = 0.06 mm
♦
Measurement in installed brake rotor
♦
Use Dial Indicator Bracket - VAS 6079/1; Dial Indicator -
♦
0-10mm - VAS 6079.
Clean dirt and rust off the brake rotor.
♦
Measure 10 mm away from the outer edge of the brake rotor.
♦
⇒ "2 Front Brakes (PR- 1LT and 1LU)", page 50
Note
Hairline cracks on brake rotor friction surfaces are often ob‐
♦
served during brake repairs. Hairline cracks up to 10 mm long
Protected by copyright. Copying for private or commercial purposes, in part or in whole, is not
are not a technical flaw and are not cause for brake rotor re‐
permitted unless authorised by AUDI AG. AUDI AG does not guarantee or accept any liability
placement.
with respect to the correctness of information in this document. Copyright by AUDI AG.
Brake rotors with friction surfaces that have worn through
♦
should be replaced.
Production-relevant
number (PR number)
Brake caliper
Brake rotor ventilated
Brake rotor, thickness
Brake rotor, wear limit
Brake caliper, 8 pis‐
tons
Brake pad thickness
with backing plate
Brake pad wear limit
with backing plate
⇒ "3 Front Brakes (PR- 1LW and 1LN)", page 59
Note
Hairline cracks on the friction surface on ceramic brakes occur
during the manufacturing process and can be found on new
brakes in different stampings. Hairline cracks on the friction sur‐
faces are not a reason to exchange the ceramic brake rotors.
Rear Brakes (Disc Brakes 17" and 18")
Production Number.
PR-Nr
Ceramic Front Brakes
1LN / 1LW
Alcon 8K (20")
di‐
ame‐
ter
mm
mm
The wear value is the minimum
brake disc thickness during man‐
ufacturing and is stamped into
the brake disc cup.
di‐ 8 x diameter 30,2
ame‐
ter
mm
mm
mm
1KF
420
40
20
10
2EA
Audi Q7 2007 ➤
Brake System - Edition 03.2018
1. Brake Allocation of PR Codes
3