Porsche CARRERA GT-2004 Manual page 155

A - Arrow for loosening the central nut
Central nut
Warning!
Risk of wheel separation, resulting in severe
personal injury or death.
f Follow all instructions concerning the central
nut.
The wheels are bolted to the wheel hub by a
special central nut.
The central nuts have right-hand thread on the left
side of the vehicle and left-hand thread on the right
side of the vehicle.
To avoid mixing them up, the central nuts are
color-coded:
left side of vehicle – red
right side of vehicle – blue
Tightening torque
Tightening torque of central nut:
550 Nm (407 ftlb.)
Loosening the central nut
The direction used to loosen the each nut is
displayed by an arrow (A) on the central nut.
The central nut can only be loosened or
tightened with a special tool as well as a
special socket.
f Always clean the central nuts before fitting.
f After pushing on the wheel, spray the cone and
thread surfaces of the rim, hub, and central nut
exclusively with Mc Lube Sailkote High
Performance Dry Lubricant.
Never grease any parts.
Warning!
Risk of damage and accident when the rim,
hub, and central nut are maintained
improperly.
f Only spray the rim, hub, and central nut when
the wheel is pushed on.
Contact surfaces between the rim and hub
must not be sprayed.
f Only spray with Mc Lube Sailkote High Per-
formance Dry Lubricant.
If you use greases and lubricants other than
the spray authorized by Porsche, your vehicle
may no longer perform safely.
f When fitting the first time, or when replacing
the central nut, rim, or wheel nut, the central
nut must be tightened and loosened three
times with the prescribed torque before the
final tightening.
f Replace damaged central nuts.
Only use the original central nuts specially
designed for this vehicle type.
Note on operation
f The Porsche torque multiplier can also be used
to loosen and tighten the central nut.
Your authorized Porsche dealer will be pleased
to advise you.
Practical Tips, Emergency Service
155