Version: 16.12.2014 - Porsche 2015 911 GT3 Cup Technical Manual

Installation
• The brake fluid can be used as assembly lubricant; wet pistons and seals
with brake fluid
• When inserting the pistons into the holes, a slight resistance is caused by
the seals (normal)
• Place the piece of wood again in the caliper
• Pressurize the brake caliper with low air pressure a few times to ensure
that the seals are properly seated
• Mount the caliper again on the wheel carrier
• Vent the brake system
Brake system cooling channels
Carry out a visual inspection for damage and remove any impurities and foreign
particles in the channels.
Brake fluid
• It is recommended venting the system after each practice and changing the
fluid after each race
• Use the brake fluid from Performance Friction Brakes, Racing Brake Fluid-
325° (DOT 4)
• Three persons are required.
• Fill quantity: approx. 1,000 ml (1.06 qt)

Version: 16.12.2014

Maintenance
911 GT3 Cup (991)
MY 2015
309