Porsche 911 2020, Руководство пользователя

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Wheels and Tires
311
Changing wheels
Fig. 248: Screw in an assembly aid for vehicles without
PCCB
Fig. 249: Screw in two assembly aids for vehicles with PCCB
1. For vehicles without PCCB: Remove one wheel
bolt and screw in an assembly aid.
– or –
1. For vehicles with PCCB: Remove two wheel bolts
and screw in two assembly aids A and B .
NOTICE
The brake disks can become damaged if wheels are
not changed properly, especially on vehicles with
PCCB.
e
When changing a wheel, screw in the assembly
aids.
2. Remove the remaining wheel bolts.
>
Please see chapter "Care of wheel bolts" on
page 310.
3. Remove the wheel.
>
Please see chapter "Caring for wheel attach-
ment faces" on page 310.
4. Fit a new wheel.
5. Insert wheel bolts and tighten in diagonally op-
posite sequence.
6. Remove assembly aids and screw in remaining
wheel bolts. Initially tighten bolts only slightly in
a diagonally opposite sequence so that the wheel
is centered.
7. Inflate the tires if necessary.
8. Lower the vehicle fully and remove the jack.
9. Tighten the wheel bolts in diagonally opposite
sequence. Do not use any power tools such as
impact wrenches.
10.After changing a wheel, immediately use a tor-
que wrench to check the specified tightening
torque of the wheel bolts (118 ftlb. (160 Nm)).
11. Update the Tire Pressure Monitoring System
(TPMS) settings.
> Please see chapter "Setting the Tire Pressure
Monitoring System (TPMS) in the PCM" on
page 303.
Changing wheels with a central
lock
WARNING
Special features of the
central lock
Changing a wheel with a central lock is very different
from changing a wheel with standard bolts.
Performing the wheel change incorrectly or using
unsuitable tools can result in damage or malfunc-
tions; the wheel may even come loose.
e
Follow the procedure described below exactly
when changing a wheel.
e
Only use the original socket when loosening or
tightening the central bolt.
e Use a torque wrench suitable for the high-tight-
ening torque of 442 ft lb (600 Nm) with a max-
imum tolerance of 15% of the target value.
WARNING
Working under the
vehicle
Owing to the high mounting forces, the vehicle can
roll away and slide off the jack.
e Whenever available, always use a lifting platform.
e Secure the vehicle to prevent it from rolling
away.
e Make sure that there is no one inside the vehicle
when jacking it up and changing the wheel.
e
Raise the vehicle only at the prescribed jacking
points on the vehicle underbody.
e
Never jack up the vehicle on a surface that slopes
up, down or to the side.