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Minor Repairs
261
There is a risk of damage to brake disks on
vehicles with Porsche Ceramic Composite Brake
(PCCB).
f
Do not tilt the wheel when removing it.
8.
Remove wheel carefully.
9.
Check that the toothed locking bolt
C
moves
smoothly.
When you press the bolt into its element, it
must return firmly to its original position
without catching.
The toothing on the locking bolt
C
must not be
damaged.
The cone ring
A
must turn easily in the central
bolt.
10.
There must be a generous coating of grease
on the thread of the central bolt and wheel hub.
Whenever wheels are changed, apply some
aluminium paste to the trapezoidal thread on
the wheel hub.
Always grease the
conical area A
(45° area)
of the
central bolt
and the
cylindrical part B
of the wheel hub with a
light coating
of
aluminum paste before fitting the central bolt.
Make sure that no dirt sticks to the
components.
All other parts must be free of grease.
Deferring inspection, maintenance and
replacement measures can result in accidents.
Carry out a visual inspection of all parts before
fitting the wheel.
The central bolt and central bolt lock are safety-
related
components. Always check them for signs
of wear and damage.
f
The affected parts must be replaced by your
authorized Porsche dealer if they are damaged
or if you suspect that they are not in perfect
working order.
f
There must be no scratches or cracks on the
cone area, thread or inner teeth of the bolt.
f
The cone ring must turn easily in the central
bolt.
f
There must be a generous coating of grease
on the thread of the central bolt and wheel hub.
f
Only brake disks that were approved for the
central lock may be fitted.
f
All contact surfaces on the wheel, wheel hub
and brake disk as well as the thread in the
wheel hub must be free of abrasion, sand, dust
or shavings.
f
The central bolt lock C prevents the
central bolt from being lost and must not
therefore be removed from the wheel hub.
There is a risk of damage to brake disks on
vehicles with Porsche Ceramic Composite Brake
(PCCB).
f
Do not tilt the wheel or place it against the
brake disk when mounting it.
11.
Fit the wheel carefully.
NOTICE
Damaged, missing,
soiled or incorrectly
greased central wheel
lock components
WARNING
h
NOTICE
14_991_Turbo_21.book Seite 261 Mittwoch, 9. April 2014 2:19 14
Содержание 911 Turbo 2014
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