Brake System; Replacing The Piston Seal Rings - Porsche 911 GT3 Cup 2018 Techical Manual

Maintenance
7.4.6.1
7.4.6.2
7.4.7.1
911 GT3 Cup (991 II)
394

7.4.6 Brake system

Brake pad wear limit:
NOTE
The wear limit is reached when the pad has been worn down to the bottom of the slot
(7.4.6.1).
Brake Disk Wear Limit:
The wear limit is reached when the disk has been worn down to the bottom of the slot
(7.4.6.2). The disk should also be replaced if there are cracks up to the edge of the
disk.

7.4.7 Replacing the piston seal rings

NOTE
Dismounting
 Remove the caliper from the wheel carrier
 Place a piece of wood in the caliper to prevent the piston from falling out
MY 2018
Removing brake piston
Damage of piston seal
Clean the piston before they move back

Cleaning Brake system
Damage of piston seal and brake fluid reservoir
Do not use brake cleaner, cleaning benzene, cleaning
solvents, all spray oils (e.g. WD 40).
Use isopropanol or ethanol for cleaning

Version: 4/20/2018