NHTSA ID Number: 10173083
Manufacturer Communication Number: 122-Z2E3R-04
TSB/Document Date: 2020-04-02
Summary
Workshop campaign instructions for campaign WKF9, which seeks to rework threaded joints on the front and rear axle of affected vehicles.
Service
Technical Information
87/19
ENU
WKF9
4
WKF9 - Reworking Threaded Joints on Front and Rear Axle (Workshop Campaign)
Vehicle type:
911 GT3 (991)/911 GT3 RS (991)/911 GT2 RS (991)
911 Carrera S (992)/911 Carrera 4S (992)/911 Turbo S (992)
Model Year:
As of 2019 up to 2020
Subject:
Information:
There is a possibility that some threaded joints on the front and rear axle do not meet the
required specifications on the affected vehicles. This can cause increased play between the axle
components over the service life of the vehicle.
Remedial
Action:
Rework bolts on the front and rear axle.
Information
Please note that various screw positions on the front and rear axle will have to be reworked on the
affected vehicles.
Specific campaign scopes have therefore been defined for reworking the bolts. Every vehicle is clearly
assigned just one campaign scope.
To find out which scope is assigned to the vehicle, see PCSS Vehicle Information.
Scope 1: Reworking bolts securing upper longitudinal control arm to left wheel bearing housing
on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'.
Scope 2: Reworking bolts securing upper longitudinal control arm to right wheel bearing housing
on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Scope 3: Reworking bolts securing upper longitudinal control arm to left and right wheel bearing
housing on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Scope 4: Reworking bolts securing upper longitudinal control arm to left wheel bearing housing,
upper longitudinal control arm to left rear-axle carrier
side section and upper transverse
control arm to right side section on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
AfterSales
Mar 16, 2020
Page 1 of 33
4
Service
WKF9
ENU
Technical Information
87/19
Technical Information 'Reworking bolts securing upper longitudinal control arm to rear-axle carrier side
section on the rear axle (left and right)'
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 5: Reworking bolts securing upper longitudinal control arm to left wheel bearing housing
and upper transverse control arm to left side section on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 6: Reworking bolts securing upper longitudinal control arm to left wheel bearing housing
and upper transverse control arm to right side section on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 7: Reworking bolts securing upper longitudinal control arm to left wheel bearing housing
and lower transverse control arm to right wheel bearing housing on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Technical Information 'Reworking bolts securing lower transverse control arm to wheel bearing
housing on the rear axle'
Scope 8: Reworking bolts securing upper longitudinal control arm to right wheel bearing housing
and upper transverse control arm to right side section on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 9: Reworking bolts securing upper longitudinal control arm to left rear-axle carrier side
section.
Technical Information 'Reworking bolts securing upper longitudinal control arm to rear-axle carrier side
section on the rear axle (left and right)'.
Scope 10: Reworking bolts securing upper longitudinal control arm to right rear-axle carrier side
section.
Technical Information 'Reworking bolts securing upper longitudinal control arm to rear-axle carrier side
section on the rear axle (left and right)'
Scope 11: Reworking bolts securing lower longitudinal control arm to left bracket on the rear axle.
Technical Information 'Reworking bolts securing lower longitudinal control arm to bracket on the rear
axle (left and right)'
Scope 12: Reworking bolts securing lower longitudinal control arm to right bracket on the rear
axle.
Mar 16, 2020
Page 2 of 33
AfterSales
Service
Technical Information
87/19
ENU
WKF9
4
Technical Information 'Reworking bolts securing lower longitudinal control arm to bracket on the rear
axle (left and right)'
Scope 13: Reworking bolts securing lower longitudinal control arm to left wheel bearing housing
on the rear axle.
Technical Information 'Reworking bolts securing lower longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Scope 14: Reworking bolts securing lower longitudinal control arm to right wheel bearing
housing on the rear axle.
Technical Information 'Reworking bolts securing lower longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Scope 15: Reworking bolts securing lower longitudinal control arm to left and right wheel bearing
housing on the rear axle.
Technical Information 'Reworking bolts securing lower longitudinal control arm to wheel bearing
housing on the rear axle (left and right)'
Scope 16: Reworking bolts securing transverse control arm to left cross member on the front axle.
Technical Information 'Reworking bolts securing transverse control arm to cross member on the front
axle (left and right)'
Scope 17: Reworking bolts securing transverse control arm to right cross member on the front
axle.
Technical Information 'Reworking bolts securing transverse control arm to cross member on the front
axle (left and right)'
Scope 18: Reworking bolts securing upper transverse control arm to left side section on the rear
axle.
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 19: Reworking bolts securing upper transverse control arm to right side section on the rear
axle.
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 20: Reworking bolts securing upper transverse control arm to left and right side section on
the rear axle.
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 21: Reworking bolts securing lower transverse control arm to left wheel bearing housing.
Technical Information 'Reworking bolts securing lower transverse control arm to wheel bearing
housing on the rear axle'
Scope 22: Reworking bolts securing lower transverse control arm to right wheel bearing housing
on the rear axle.
Technical Information 'Reworking bolts securing lower transverse control arm to wheel bearing
housing on the rear axle'
AfterSales
Mar 16, 2020
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Technical Information
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Scope 23: Reworking bolts securing upper transverse control arm to left and right side section on
the rear axle.
Technical Information 'Reworking bolts securing upper transverse control arm to side section on the
rear axle (left and right)'
Scope 24: Reworking bolts securing upper longitudinal control arm to left wheel bearing housing
on the rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to rear-axle carrier side
section on the rear axle (left and right)'
Scope 25: Reworking bolts securing upper longitudinal control arm to right side section on the
rear axle.
Technical Information 'Reworking bolts securing upper longitudinal control arm to rear-axle carrier side
section on the rear axle (left and right)'
Scope 26: Reworking bolts securing lower longitudinal control arm to right bracket on the rear
axle.
Technical Information 'Reworking bolts securing lower longitudinal control arm to bracket on the rear
axle (left and right)'
Scope 27: Reworking bolts securing cross member to inner right side section on the rear axle.
Technical Information 'Reworking bolts securing cross member to inner side section on the rear axle'
Affected
Vehicles:
Only the vehicles assigned to the campaign (see also PCSS Vehicle Information).
Parts required
Information
Please note that various screw positions on the front and rear axle will have to be reworked on the
affected vehicles.
Specific campaign scopes have therefore been defined for reworking the bolts. Every vehicle is clearly
assigned just one campaign scope.
The part numbers of the parts required for the respective vehicle are specified in the relevant assigned
scope.
Parts Info:
Information
To find out which parts are required, depending on the assigned campaign scopes, see Technical Information 'Warranty processing'.
Mar 16, 2020
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AfterSales
Service
Technical Information
87/19
ENU
WKF9
4
Required tools
Tools:
•
•
•
•
•
Torque angle torque wrench, 20 – 400 Nm (15 – 296 ftlb.), e.g. Torque/torque angle wrench,
20-400 Nm (15-296 ftlb.)
Torque wrench, 150 – 800 Nm (111 – 592 ftlb.), e.g. Torque wrench 150 – 800 Nm (111 - 592
ftlb.)
9471 - Socket wrench
9796 - Socket wrench (vehicles with central wheel lock)
9794 - Assembly aid (vehicles with central wheel lock)
Reworking bolts securing upper longitudinal control arm to wheel bearing housing on the rear axle
(left and right)
Remedial Action: 1
Raise the vehicle on a lifting platform Workshop Manual '4X00IN Lifting the vehicle'.
2
Depending on which side of the vehicle is affected, remove the rear left and/or rear right wheel
Workshop Manual '4X00IN Removing and installing wheel'.
3
Replace fastening screw Reworking bolts securing upper longitudinal control arm to wheel
bearing housing -1- and nut Reworking bolts securing upper longitudinal control arm to wheel
bearing housing -2- on the front longitudinal control arm.
Information
For information on the tightening procedure and the correct tightening torque, always refer to the
model-specific Workshop Manual.
• 911 Carrera S (992)/911 Carrera 4S (992)/911 Turbo
S (992): Workshop Manual '42351951 Removing and
installing upper control arm (front)'.
Reworking bolts securing upper longitudinal
control arm to wheel bearing housing
AfterSales
Mar 16, 2020
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Service
WKF9
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Technical Information
87/19
Part No.
Designation
Number on
each side
9A700867700
Hexagon-head bolt, M12 x 1.5 x 80
1 ea.
N 90966402
Hexagon nut, M12 x 1.5
1 ea.
• 911 GT3 (991): Workshop Manual '423519 Removing and installing rear upper trailing arm'.
Part No.
Designation
Number on
each side
99907208601
Hexagon-head bolt, M12 x 1.5 x 75
1 ea.
99908444501
Hexagon nut, M12 x 1.5
1 ea.
4
Replace fastening screw Reworking bolts securing upper longitudinal control arm to wheel
bearing housing -3- on the rear upper longitudinal control arm on the rear axle.
For instructions, see Workshop Manual listed below for each vehicle type.
Information
For information on the tightening procedure and the correct tightening torque, always refer to the
model-specific Workshop Manual.
• 911 Carrera S (992)/911 Carrera 4S (992)/911 Turbo S (992): Workshop Manual '42351953
Removing and installing upper control arm (rear)'
Part No.
Designation
Number on
each side
9A700867700
Hexagon-head bolt, M12 x 1.5 x 80
1 ea.
• 911 GT3 (991): Workshop Manual '423519 Removing and installing rear upper trailing arm'.
Mar 16, 2020
Page 6 of 33
Part No.
Designation
Number on
each side
99907208601
Hexagon-head bolt, M12 x 1.5 x 75
1 ea.
5
Install wheel on the rear axle Workshop Manual '440519 Removing and installing wheel'.
6
Lower the vehicle and remove it from the lifting platform Workshop Manual '4X00IN Lifting the
vehicle'.
AfterSales
Service
Technical Information
87/19
ENU
WKF9
4
Reworking bolts securing upper longitudinal control arm to rear-axle carrier side section on the rear
axle (left and right)
Remedial Action: 1
2
Raise the vehicle on a lifting platform Workshop Manual '4X00IN Lifting the vehicle'.
Depending on which side of the vehicle is affected, remove the rear left and/or rear right wheel
Workshop Manual '440519 Removing and installing wheel'.
Information
For information on the tightening procedure and the correct tightening torque, always refer to the modelspecific Workshop Manual.
3
Replace fastening screw Reworking bolts securing longitudinal control arms to rear-axle carrier
side section -1- and nut Reworking bolts securing longitudinal control arms to rear-axle carrier
side section -2- on the front upper longitudinal control arm on the rear axle.
For instructions, see Workshop Manual listed below
for each vehicle type.
• 911 Carrera S (992)/911 Carrera 4S (992):
Workshop Manual '42351951 Removing and installing
upper control arm (front)'.
Reworking bolts securing longitudinal control arms to rear-axle
carrier side section
Part No.
Designation
Number on
each side
9A700867700
Hexagon-head bolt, M12 x 1.5 x 80
1 ea.
N 90966402
Hexagon nut, M12 x 1.5
1 ea.
• 911 GT3 (991): Workshop Manual '423519 Removing and installing front upper trailing arm'.
AfterSales
Mar 16, 2020
Page 7 of 33
4
Service
WKF9
ENU
Technical Information
87/19
Part No.
Designation
Number on
each side
99907208601
Hexagon-head bolt, M12 x 1.5 x 75
1 ea.
99908444501
Hexagon nut, M12 x 1.5
1 ea.
Information
For information on the tightening procedure and the correct tightening torque, always refer to the modelspecific Workshop Manual.
4
Replace fastening screw Reworking bolts securing longitudinal control arms to rear-axle carrier
side section -3- and nut Reworking bolts securing longitudinal control arms to rear-axle carrier
side section -4- on the rear upper longitudinal control arm on the rear axle.
For instructions, see Workshop Manual listed below for each vehicle type.
• 911 Carrera S (992)/911 Carrera 4S (992): Workshop Manual '42351953 Removing and installing
upper control arm (rear)'.
Part No.
Designation
Number on
each side
9A700867700
Hexagon-head bolt, M12 x 1.5 x 80
1 ea.
N 90966402
Hexagon nut, M12 x 1.5
1 ea.
• 911 GT3 (991): Workshop Manual '423519 Removing and installing front upper trailing arm'.
Part No.
Designation
Number on
each side
99907208601
Hexagon-head bolt, M12 x 1.5 x 75
1 ea.
99908444501
Hexagon nut, M12 x 1.5
1 ea.
5
Install wheel on the rear axle Workshop Manual '440519 Removing and installing wheel'.
6
Lower the vehicle and remove it from the lifting platform Workshop Manual '4X00IN Lifting the
vehicle'.
Reworking bolts securing lower longitudinal control arm to bracket on the rear axle (left and right)
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TSB/Document ID: 122-Z2E3R-04
Replacement Service Bulletin Number:
MFR Communication Date: 2020-03-16
MFR Internal Campaign ID/Software Version:
Communication Type: Service Bulletin/Repair Instructions
NHTSA Components: POWER TRAIN
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