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AMA3 - Reworking Various Threaded Connections on the Chassis (Recall Campaign)

Model line:

911 (992)
718 (982)

Model Year:

As of 2020 up to 2021

Concerns:

Hexagon clamping nut M12 x 1.5 on various threaded connections on the chassis

Information:

There is a possibility that clamping nuts, on which the thread was not manufactured
according to specifications, were installed on various threaded connections on the chassis
on the affected vehicles.
As a result, the required tightening torque was reached before the threaded connection was actually
tightened fully when installing the clamping nuts. There is therefore no guarantee that the affected
threaded connections will remain sufficiently tight over the service life of the vehicle.

General
Information
on Warranty
Processing:

The scopes listed below for this measure do not include published labor time and they only provide
the minimum number of parts for reworking the respective vehicles. For this unique business
case all labor and any additional parts that may be required depending on the result of a campaign scope
check must be submitted as a subsequent credit appeal to the initial paid campaign line. Any additional
parts and labor added to the initial AMA3 campaign line that is not a part of the published scope will result
in a system error preventing the claim from processing. Due to this unique business case, the campaign
scope must be submitted and paid first, then a credit for additional parts and labor thereafter.

Action required: Rework threaded connections on the front and rear axle.
On vehicles that have already been delivered to customers, the screwed components must also be
checked for damage.
Information
Please note that different screw positions on the front and rear axle must be reworked on the affected
vehicles.
The following specific campaign scopes have therefore been defined for reworking the threaded
connections. Every vehicle is clearly assigned just one campaign scope.
The relevant M12 x 1.5 fastening nuts must be replaced on all affected vehicles, depending on the
assigned scope.
In addition, the relevant fastening screws must also be replaced.
On vehicles on which a component is screwed at the relevant screw point (e.g. actuator or
connecting link), depending on the assigned scope, the thread on the relevant component must be
checked and the component may also have to be replaced, depending on the result of the check.

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On vehicles that have already been delivered to customers, the components that are screwed
together must also be checked for damage caused by relative movements while driving as fittings,
contact surfaces or bores on the individual components may have been damaged.
The relevant components may also have to be replaced, depending on the result of the check.
Example of a damaged thread on the actuator:

 Damaged thread on actuator

Damaged thread on actuator
Example of damage caused by driving:  Damage to
component caused by driving
For an overview of each of the assigned scopes, see list
below.
The scope that is clearly assigned to an affected vehicle is
shown in the PCSS vehicle information for this campaign.
Scope 1:  Technical Information 'Scope 1: Reworking
threaded joints on the rear axle'
•

•

Reworking bolts securing connecting link
(suspension/stabilizer) to left and right wheel
bearing housing on the rear axle
Reworking bolts securing spring strut clamps to
left and right wheel bearing housing on the rear
axle

Scope 2:  Technical Information 'Scope 2: Reworking
threaded joints on front and rear axle'
•

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Damage to component caused by driving

Reworking bolts securing lower trailing arm to front-axle cross member at the left and right
on the front axle

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•

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Reworking bolts securing connecting link (suspension/stabilizer) to left and right wheel
bearing housing on the rear axle
Reworking bolts securing spring strut clamps to left and right wheel bearing housing on the
rear axle

Scope 3:  Technical Information 'Scope 3: Reworking threaded joints on the rear axle'
•
•
•

Reworking bolts securing lower front longitudinal arm to left and right wheel bearing housing
on the rear axle
Reworking bolts securing lower front longitudinal arm to left and right control arm bracket on
the rear axle
Reworking bolts securing lower trailing arm to left and right wheel bearing housing on the
rear axle

Scope 4:  Technical Information 'Scope 4: Reworking threaded joints on the rear axle'
•
•

Reworking bolts securing (front) upper longitudinal arm to left and right rear axle carrier
Reworking bolts securing (rear) upper trailing arm to left and right rear axle carrier

Scope 5:  Technical Information 'Scope 5: Reworking threaded joints on the front axle'
•

Reworking bolts securing spring strut clamps to left and right wheel bearing housing on the
front axle

Also on vehicles with Porsche Dynamic Chassis Control (PDCC, I-no. 1P7):
•

Reworking bolts securing connecting link (PDCC actuator) to left and right wheel bearing
housing on the front axle

Scope 6:  Technical Information 'Scope 6: Reworking threaded joints on the front axle'
•

Reworking bolts securing lower trailing arm to left and right front-axle cross member

Scope 7:  Technical Information 'Scope 7: Reworking threaded joints on front and rear axle at the left'
•
•
•

Reworking bolts securing connecting link (suspension/stabilizer) to left wheel bearing
housing on the front axle
Reworking bolts securing lower front longitudinal arm to left wheel bearing housing on the
rear axle
Reworking bolts securing lower front longitudinal arm to left control arm bracket on the rear
axle

Scope 8:  Technical Information 'Scope 8: Reworking threaded joints on front and rear axle'
•
•

Reworking bolts securing connecting link (PDCC actuator) to right wheel bearing housing on
the front axle
Reworking bolts securing lower trailing arm to left and right wheel bearing housing on the
rear axle

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Scope 9:  Technical Information 'Scope 9: Reworking threaded joints on front and rear axle'
•
•
•

Affected
Vehicles:

Reworking bolts securing connecting link (PDCC actuator) to right wheel bearing housing on
the front axle
Reworking bolts securing lower front longitudinal arm to left wheel bearing housing on the
rear axle
Reworking bolts securing lower front longitudinal arm to left control arm bracket on the rear
axle

Only vehicles assigned to the campaign (see also PCSS Vehicle Information). This campaign affects 395
vehicles.

Parts required
Parts Info:

Clamping nuts required for all affected vehicles:
Part No.

Designation

Qty.

PAF909664

Lock nut, M12 x 1.5

Scope-specific

Information
Due to the different screw positions to be reworked on the front and rear axle of each vehicle, the required
fastening nuts and screws are listed in the relevant scope.
All additional parts that are required must be determined independently in accordance with the Porsche
Electronic Parts Catalogue (PET).

Required tools
Tools:

General tools:
•

Torque wrench, 2–10 Nm (1.5–7.5 ftlb.), e.g. VAG 1783 Torque wrench, 2-10 Nm (1.5-7.5
ftlb.)

•

Torque wrench, 6–50 Nm (4.5–37 ftlb.), e.g. VAG 1331A Torque wrench, 6-50 Nm (4.5-37
ftlb.)
Torque wrench, 40–200 Nm (30–148 ftlb.), e.g. VAG 1332A Torque wrench, 40-200 Nm
(30-148 ftlb.)
Electronic torque angle torque wrench, 2-100 Nm (1.5-74 ftlb.), e.g. 9768 - Electronic torque
wrench, 2 - 100 Nm (1.5 - 74 ftlb.)
Electronic torque angle torque wrench, 20-400 Nm (15-296 ftlb.), e.g. VAS 6942 Torque angle
torque wrench, 20-400 Nm (15-296 ftlb.)

•
•
•

All other required (special) tools in accordance with the linked Workshop Manuals depending on the
relevant assigned scope.

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Scope 1: Reworking threaded joints on the rear axle
Parts Info:

Parts required for this scope:
Part No.

Designation
– Use

Qty.

PAF909664

 Lock nut, M12 x 1.5
– Spring strut clamp to wheel bearing housing
– Connecting link to wheel bearing housing

4 ea.

9A700867700

 Hexagon-head bolt, M12 x 1.5 x 80
– Spring strut clamp to wheel bearing housing

2 ea.

Information
For all other parts that may be required, see Porsche Electronic Parts Catalogue (PET).
Work Procedure: 1

Raise the vehicle using a lifting platform  Workshop Manual '4X00IN Lifting the vehicle'.

2

Remove rear wheel at the left and right  Workshop Manual '440519 Removing and installing
wheel'.

3

Replace the following threaded connections on the rear axle at the left and right:
•
•

Clamped connection between spring strut and wheel bearing housing
Bolts securing connecting link to wheel bearing housing

Also only for vehicles that have already been delivered to customers: After removing the
relevant bolts, perform a visual inspection for signs of damage caused by driving in the area
around the relevant screw points.
The relevant components may also have to be replaced, depending on the result of the check.
3.1

Support the wheel bearing housing using a suitable engine and gearbox jack.
On vehicles with PCCB brake discs, make sure not to damage the brake disc.

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3.2

Loosen and unscrew fastening nut  Spring
strut to wheel bearing housing -6- for the
spring strut clamp, then remove the
clamping screw  Spring strut to wheel
bearing housing -2- from the wheel bearing
housing.

3.3

Install new clamping screw  Spring strut to
wheel bearing housing -2- and screw on and
tighten new fastening nut  Spring strut to
wheel bearing housing -6-.
Initial tightening 50 Nm (37 ftlb.)
Final tightening +180°

Spring strut to wheel bearing housing

3.4

Loosen and unscrew fastening nut  Spring strut to wheel bearing housing -5- on the
connecting link  Spring strut to wheel bearing housing -3-. Counter at the flat surface of
the connecting link  Spring strut to wheel bearing housing -Arrow- while doing this.

3.5

Pull connecting link out of the wheel bearing housing and check the thread of the connecting
link.
To do this, screw a nut (M12 x 1.5, e.g. square nut, Part No. WHT002305) fully onto the
thread. If the nut can be screwed on and off easily, the connecting link does not have to
be replaced.
If the thread of the connecting link is damaged, a new connecting link must be
installed. For instructions, see:
 Workshop Manual '429119 Removing and installing connecting link for anti-roll bar'

3.6

Secure connecting link with a new fastening nut  Spring strut to wheel bearing housing -5on the wheel bearing housing.
Initial tightening 50 Nm (37 ftlb.)
Final tightening +180°

3.7

Lower the engine and gearbox jack and remove it.

3.8

Repeat the procedure on the other side of the vehicle.

4

Install rear wheel at the left and right  Workshop Manual '440519 Removing and installing wheel'.

5

Lower the vehicle and remove it from the lifting platform.

6

Enter the campaign in the Warranty and Maintenance booklet.
End of action required
For warranty processing, see General information on warranty processing and Scope 1 under
 Technical Information '440519 Warranty processing'.

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Scope 2: Reworking threaded joints on front and rear axle
Parts Info:

Parts required for this scope:
Part No.

Designation
– Use

Qty.

PAF909664

 Lock nut, M12 x 1.5
– Lower trailing arm to front-axle carrier
– Spring strut clamp to wheel bearing housing
– Connecting link to wheel bearing housing

6 ea.

9A700867700

 Hexagon-head bolt, M12 x 1.5 x 80
– Spring strut clamp to wheel bearing housing

2 ea.

Additional parts required for 718 Cayman GT4/718 Spyder vehicles:
99907287601

 Hexagon-head bolt, M12 x 1.5 x 95
– Lower trailing arm to front-axle carrier

2 ea.

Additional parts required for 718 Cayman/718 Boxster vehicles (excluding 718 Cayman
GT4/718 Spyder):
9A700820900

 Hexagon-head bolt, M12 x 1.5 x 90
– Lower trailing arm to front-axle carrier

2 ea.

Information
For all other parts that may be required, see Porsche Electronic Parts Catalogue (PET).
Work Procedure: 1

Raise the vehicle using a lifting platform  Workshop Manual '4X00IN Lifting the vehicle'.

2

Remove all wheels  Workshop Manual '440519 Removing and reinstalling wheel'.

3

Replace the following threaded connections on the front axle at the left and right:
•

Bolts securing lower trailing arm to front-axle cross member

Also only for vehicles that have already been delivered to customers: After removing the
relevant bolts, perform a visual inspection for signs of damage caused by driving in the area
around the relevant screw points.
The relevant components may also have to be replaced, depending on the result of the check.
3.1

Remove front underbody panelling  Workshop Manual '519219 Removing and installing
cover for front underbody'.

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3.2

If installed, loosen the ball joint of the level
sensor linkage  Ball joint on level sensor -1from the lower trailing arm.

Ball joint on level sensor

4

3.3

Loosen and unscrew fastening screw
securing lower trailing arm to front-axle cross
member  Lower trailing arm to front-axle
cross member.
Counter at the fastening nut while doing this.

3.4

Install new fastening screw on the front-axle
cross member and secure with a new
fastening nut.
Initial tightening 70 Nm (52 ftlb.)
Final tightening +180°

3.5