No. 74-23-1

Service
Technical Information
73/23
ENU
WPG4
6
WPG4 - Replacing Rear Wing Circlips (Workshop Campaign)
Model Line:
911 GT3 RS (992)
Model Year:
As of 2023 up to 2024
Concerns:
Rear Wing
Cause:
On the affected vehicles, the corresponding circlips securing the rear spoiler bearing pins may
not have been installed according to specifications.
In such a case, the rear spoiler bearing pin is not secured sufficiently axially in the bearing block and
may slip out of the bearing block over the service life of the vehicle. This may cause noticeable rear end
vibrations when the vehicle is in operation.
Action:
Replace rear wing circlips.
Affected
Vehicles:
Only vehicles assigned to the campaign (see also PCSS Vehicle Information).
Replacing rear wing circlips
Work Procedure: 1
Remove side covers from the left and right wing struts.
For instructions, see:  Workshop Manual '66721933 Removing and installing spoiler drive (cover)'
2
Remove left and right outer wing covers.
For instructions, see:  Workshop Manual '66581931 Removing and installing rear spoiler (wing
plate)'
3
Replace circlips on left and right wing struts and outer left and right wing.
A total of 14 circlips must be replaced.
Information
For better accessibility to the circlips, adjust the position of the additional wing accordingly via
Porsche Communication Management (PCM).
3.1
Replace circlips at the marked positions using a suitable tool. On each wing strut, 6 circlips
must be replaced.
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Circlip installation positions - left wing strut shown
Information
After installing the new circlips, it is essential to check that the installation is done correctly.
The circlips must be in the groove.
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Example: Correct circlip installation
3.2
Replace circlips on the left and right outer wing. One circlip must be replaced on each outer
side of the wing.
Circlip installation position - right side cover shown
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Information
After installing the new circlips, it is essential to check that the installation is done correctly.
The circlips must be in the groove.
Example: Correct circlip installation
If one or both bearing pins are missing from the side covers, retrofit the corresponding
bearing pins and circlips. Invoice the bearing pins via a reimbursement claim.
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4
Install left and right outer wing covers.
For instructions, see:  Workshop Manual '66721933 Removing and installing spoiler drive (cover)'
5
Install side covers on the left and right wing struts.
For instructions, see: Workshop Manual '66721933 Removing and installing spoiler drive (cover)'
6
Enter the campaign in the Warranty and Maintenance booklet.
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Technical Information
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Warranty processing
Scope 1:
Replacing circlips - without pins
Labor time:
Labor time: 78 TU
Replacing rear wing circlips
Includes:
Removing and installing left and right wing strut cladding
Removing and installing left and right outer wing cover
Required parts:
9GT898533
 Circlip repair kit (14 pieces per set)
1 set
 Damage number WPG4 066 000 2
Important Notice: Technical Bulletins issued by Porsche Cars North America, Inc. are intended only for use by professional automotive technicians who have attended Porsche service training
courses. They are written to inform those technicians of conditions that may occur on some Porsche vehicles, or to provide information that could assist in the proper servicing of a vehicle. Porsche special
tools may be necessary in order to perform certain operations identified in these bulletins. Use of tools and procedures other than those Porsche recommends in these bulletins may be detrimental to the
safe operation of your vehicle, and may endanger the people working on it. Properly trained Porsche technicians have the equipment, tools, safety instructions, and know-how to do the job properly and
safely. Part numbers listed in these bulletins are for reference only. The work procedures updated electronically in the Porsche PIWIS diagnostic and testing device take precedence and, in the event of a
discrepancy, the work procedures in the PIWIS Tester are the ones that must be followed.
© 2023 Porsche Cars North America, Inc.
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