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AH08 - Replacing Fastening Screws for Camshaft Controllers (Recall Campaign)

Vehicle Type:

Cayenne S (92A)/Cayenne Turbo (92A)

Model Year:

As of 2011 up to 2012

Country/market:

•
•

Subject:

Fastening screws for camshaft controllers

Information:

Due to influencing factors during the camshaft controller assembly process, the threaded
connections can become strained to such an extent that the function of the camshaft controller
cannot be guaranteed over the service life of the vehicle.

Remedial
action:

•
•

USA
Canada

Replace fastening screws for camshaft controllers.
Also replace one or both camshaft controllers if necessary.

Information
If you see from the vehicle’s workshop history, for example, that both camshaft controllers on the vehicle
were already replaced by components with Part No. 948.105.051.22 or a higher index before carrying
out the campaign, the fastening screws must not be replaced.

Affected
Vehicles:
Installation
position:

•

The campaign must not therefore be carried out on the vehicle.

•

This must be documented accordingly in PQIS. The campaign must be marked as cannot be
carried out with the reason “Campaign scope already carried out on the vehicle prior to
starting the campaign”. The “Warranty relevance” flag must be activated in order to be able to
set a warranty claim and close the campaign.

•

A warranty claim must be submitted for the campaign in which 0 TU is entered as the specified
working time and no material items are specified.

Only the vehicles assigned to the campaign (see also PIWIS Vehicle information). This recall campaign
affects 19,809 vehicles in North America.

Information
The following illustrations in this document show the V8 Turbo engine as an example.
The position of the individual components and the procedure for the V8 naturally aspirated engine are
identical to the description provided here.

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Overview of threaded joint for camshaft controllers
– Fastening screws on camshaft controllers (replace)
– Camshaft controllers for intake camshafts

Required parts and materials
Important:

Parts Info:

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Ordering Required Parts:
Parts for this campaign will be automatically allocated for up to 50% of the vehicles that are serviced at
your dealership.
IF CAMSHAFT CONTROLLER (PART NUMBER - 94810505123) IS REQUIRED, PLEASE ORDER
VIA PTEC/PAV.

Part No.

Designation
– Use

Qty.

99906780330

 Cheese head bolt, M7 x 21
– Camshaft controller

8 ea.

94810514600

 Hexagon round-head bolt
– Ignition rod modules

8 ea.

94810743720

 Seal
– Oil mist separator

1 ea.

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94810743820

 Seal
– Oil mist separator

1 ea.

94810593501

 Seal for cyl. 1-4
– Cylinder head cover, left

1 ea.

94810593601

 Seal for cyl. 5-8
– Cylinder head cover, right

1 ea.

94810593702

 Inner seal
– Cylinder head cover, left/right

8 ea.

94810593800

 Seal for actuator
– Cylinder head cover, left/right

2 ea.

99907390531

 Oval-head screw, M6 x 30
– Cylinder head cover, left/right

23 ea.

99907390831

 Oval-head screw, M8 x 35
– Cylinder head cover, left/right

3 ea.

WHT005204

 Cheese head bolt, M10 x 80
– Torque support to spring strut dome

1 ea.

WHT004595

 Cheese head bolt, M10 x 90
– Torque support to cylinder head cover

1 ea.

WHT004635

 Hexagon nut, M10
– Torque support

2 ea.

99907391431

 Oval-head screw, M6 x 55
– Secondary-air pump to cylinder head cover

2 ea.

AH08

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Also for vehicles with anti-theft protection for engine control module (I-no. KE2):
N 91146801
Materials:

 Shear bolt, M6 x 16

3 ea.

Required materials (usually already available in the Porsche dealership):
Part No.

Designation
– Use

Qty.

00004330547

 Drei Bond sealing compound Silikon 2210
– Cylinder head cover

30g tube
As much as required
(approx. 10 grams
required per vehicle)

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Required tools
Tools:

•

Tamper Proof Torx socket-wrench insert T45 > Torx socket-wrench insert -1- with a length > Torx
socketwrench insert -A- of approx. 125 mm for the threaded joint on the camshaft controllers, e.g.
Hazet socket-wrench insert 992SLG-T45

Torx socket-wrench insert
•
•
•
•
•
•
•
•
•
•
•
•

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9768 - Electronic torque wrench, 2 - 100 Nm (1.5 - 74 ftlb.)
Torque wrench, 2 – 10 Nm (1.5 – 7.5 ftlb.), e.g. V.A.G 1783 - Torque wrench, 2-10 Nm (1.5-7.5
ftlb.)
Torque wrench 6 – 50 Nm (4.5 – 37 ftlb.), e.g. V.A.G 1331 - Torque wrench, 6-50 Nm/4.5-37
ftlb.
VAS 6935 - Pole terminal puller
3122 B - Spark plug wrench
9701 - Assembly sleeve
9714 - Socket-wrench insert
9824 - Flexible-head socket wrench, a/f 8
9824/1 - Flexible-head socket wrench, a/f 10
9824/2 - Torx Micro Bit T30
9824/3 - Torx Micro Bit T45
Water-resistant marker for marking the threaded joint on the camshaft controllers

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Preparatory work
Work
Procedure:

Information
Depending on vehicle equipment, it may be necessary to disconnect individual lines in order to
access the fastening screws for the cylinder head cover.
There is no need to remove any other components (e.g. coolant reservoir or hydraulic unit). The
specified working time already includes the time required for partially loosening the lines.
1

Remove both wiper arms  Workshop Manual '922519 Removing and installing wiper arm'.

2

Remove engine compartment trim panel at the left and right  Workshop Manual '700219
Removing and installing front trim panel (engine compartment)'.

3

Remove rear profile seal for front lid  Workshop Manual '553319 Removing and installing front lid
seal'.

4

Remove cowl panel cover  Workshop Manual '664419 Removing and installing cowl panel cover'.

5

Remove DME control unit  Workshop Manual '247019 Removing and installing DME control unit'.

6

Remove torque support  Workshop Manual '103719 Removing and installing torque support'.

7

Remove secondary-air pump  Workshop Manual '266519 Removing and installing secondary-air
pump'.

8

Remove cross panel in engine compartment at the left and right  Workshop Manual '508119
Removing and installing cross panel'.

9

Remove engine cover on both cylinder banks  Workshop Manual '108319 Removing and installing
engine cover'.

10 Remove bar ignition modules on both cylinder banks  Workshop Manual '282020 Removing and
installing bar ignition modules'.
11 Remove oil mist separator on cylinder bank 5-8  Workshop Manual '105519 Removing and
installing oil separator'.
Information
The space available for loosening and tightening the fastening screws for the cylinder head
cover may be restricted depending on vehicle equipment.
Always use the tools recommended in the Workshop Manual for carrying out repairs.

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12 Remove cylinder head covers on both cylinder banks  Workshop Manual '158219 Removing and
installing cylinder head cover'.
13 Remove spark plugs on both cylinder banks  Workshop Manual '287020 Removing and installing
spark plugs'.

Replacing fastening screws for camshaft controllers
Work
Procedure:
NOTICE
Loosening several fastening screws on the camshaft controller at the same time
•

Damage to the camshaft controller

•

Adjustment of valve timing for camshaft drive

•

Damage to the valve drive



Replace fastening screws for the camshaft controller individually, one at a time
1

Replace fastening screws  Fastening screws for
camshaft controller on cyl. 1-4 -1- for the camshaft
controller on cylinder bank 1–4  Fastening screws
for camshaft controller on cyl. 1-4 -2-.

Fastening screws for camshaft
controller on cyl. 1-4

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Use the tool 9714 - socket-wrench insert
to turn the engine at the vibration balancer
in rolling direction until one of the fastening
screws  Turning engine to assembly
position, cyl. 1-4 -1- for the camshaft
controller  Turning engine to assembly
position, cyl. 1-4 -2- on cylinder bank 1–4 is
at the same height as the flattened area on
the mounting saddle for the intake camshaft.

Turning engine to assembly
position, cyl. 1-4
Information
For easy access and to prevent damage to the cylinder head or valve drive, the threaded
joint on the camshaft controllers must be loosened and tightened using the prescribed Torx
socket-wrench insert. The use of this Torx socket-wrench insert ensures that the tool can be
fitted correctly on the screw heads.
1.2

Cover the contact surface  Covering
contact surface -A- on the camshaft with
adhesive tape or a clean, lint-free cloth
to prevent damage to the camshaft when
replacing the fastening screws using the Torx
socket-wrench insert  Covering contact
surface -1-.

Covering contact surface

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1.3

Unscrew and remove fastening screw 
Replacing fastening screw on cyl. 1–4 -1for the camshaft controller  Replacing
fastening screw on cyl. 1–4 -2- using the
prescribed Torx socket-wrench insert.
Information
If one or more fastening screws for the
camshaft controller have already become
loose and can be unscrewed and removed
by hand, the camshaft controller must be
replaced.
Replacing fastening screw on cyl. 1–4