Porsche 911 Turbo 2014, Руководство пользователя

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258
Minor Repairs
Wheels with Central Lock
Racing technology for the road.
Wheels with a central lock are perfectly normal in
motor sport, but are not common on normal roads.
Instead of the central lock nuts conventionally
used in motor sport, the wheel has an
encapsulated central bolt, which is used to fasten
it to the wheel hub.
Driving on a race circuit (e.g. sports
driving school, club sport events)
Wheels are subjected to
significantly higher
stresses during extremely sporty driving –
particularly when driving on race circuits –
compared to driving on public roads. For this
reason, all the instructions specified below must
always be noted and followed for driving on race
circuits.
f
Always make enquiries with your authorized
Porsche dealer about any other driving and
maintenance instructions before driving on
race circuits.
The central lock, like all chassis components,
requires greater attention while driving on race
circuits.
f
Check the tightening torque of the central bolts
before, if necessary during and after driving on
a race circuit.
f
Whenever wheels are changed, apply some
aluminum paste to the trapezoidal thread on
the wheel hub or have a second set of greased
screws on hand.
f
Never drive the vehicle without a central lock
bolt in the hub.
f
All central wheel lock components, such as the
central bolt, wheel, wheel hub, wheel hex and
brake disk must always be checked for wear
and replaced if necessary after driving on a
race circuit.
f
Axis components subject to high loads
must be replaced at
intervals specified by
Porsche . Always make enquiries with your
authorized Porsche dealer about the current
stipulations before driving on race circuits.
f
Other parts such as ball joints, rubber mounts,
etc., where wear may result in modified vehicle
handling, must be checked and if applicable
replaced without delay.
Deferring inspection, maintenance and
replacement measures can result in accidents.
This is particularly true if
you are clocking up
high mileage on race circuits .
We recommend that you get an authorized
Porsche dealer to carry out these measures.
Components can break or become damaged.
Unsuitable wheel sizes or incorrectly dimensioned
components in the hub area of accessory
wheels , the use of spacers, etc. can impair the
overall function of the wheel mounting.
f
Only use wheel/tire combinations approved by
Porsche.
f
Under no circumstances should spacers be
used.
Central Bolts
The central bolt and central bolt lock are safety-
related components. Always check them for signs
of wear and damage.
f
The conical surface, trapezoidal thread and
inner toothing of the central bolt must not be
scratched or cracked.
f
Replace damaged central bolts.
Only use the genuine Porsche central bolts
allocated specifically to this vehicle model.
f
The conical surface and trapezoidal thread on
the central bolt must be perfectly clean.
Tightening torque for central bolts: 443 ftlb.
(600 Nm).
Changing a Wheel
f
Get an authorized Porsche dealer to change
the wheel.
Information
The tools required for changing a wheel (e.g. jack,
torque wrench) are not supplied as standard with
the car. Your authorized Porsche dealer will be
pleased to advise you.
Deferred inspection,
maintenance and
replacement measures
Inadequate screw
connections when using
unapproved
components and wheels
WARNING
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WARNING
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14_991_Turbo_21.book Seite 258 Mittwoch, 9. April 2014 2:19 14