Air-Jack System - Porsche 2012 911 GT3 CUP Technical Manual

9.5.

Air-jack system

The exhaust valve must always be open (pulled out) to ensure

that the air-jack cylinders are completely retracted when the car
is running
 Never work under the car when the car is raised on the air-jack
system without the air-jacks being blocked with 'safeties'
 To prevent damage to the air-cylinder end stops never operate
the system without the full weight of the car as resistance.
To let down the car slowly a service valve is mounted to the rear

right air-jack.
Max pressure. Operating pressure approximately 35-38

bar
 Never use mineral oil based cleaning agents
Never open the air jacks: There is residual pressure in the

system even when jacks are retracted!
 Porsche Motorsport recommends that the system is overhauled
after 2000 lifts or two years
 The torque setting for the grooved nut (air-jack fixed mount) must
be checked during the standard maintenance procedure
Torque setting grooved nut rear
Torque setting grooved nut front
See picture below for position of rear air-jack in the mounting
tube
45 ± 5 Nm
45 ± 5 Nm
62 - 63 mm
124