Service

Technical Information

88/20

ENU

3734

3

Complaint - Oil Leaks on Double Clutch Transmission (Porsche Doppelkupplung (PDK)):
Observe Specified Procedure (88/20)
Revision:

This bulletin replaces bulletin Group 3 88/20, dated September 8, 2020.

Model Year:

As of 2020 up to 2024

Model Line:

911 Carrera (992)

Equipment:

8-speed automatic transmission (I-no. G1F)
8-speed automatic transmission for all-wheel drive (I-no. G1G)

Subject:

Double clutch transmission (PDK)

Information:

Oil leaks on double clutch transmission.

Remedial
Action:

Find oil leaks and carry out the relevant repair measure.

Contents:

•
•
•
•
•
•
•
•

Preparatory work, see  Technical Information 'Preparatory work'
Leaks in the area (right side of transmission), see  Technical Information 'Leaks in the area (right
side of transmission)'
Leaks in the area (left side of transmission), see  Technical Information 'Leaks in the area (left side
of transmission)'
Leaks in the area (upper side of transmission), see  Technical Information 'Leaks in the area (upper
side of transmission)'
Leaks in the area (lower side of transmission), see  Technical Information 'Leaks in the area (lower
side of transmission)'
Leaks in the area (rear side of transmission), see  Technical Information 'Leaks in the area (rear
side of transmission)'
Leaks in the area (front side of transmission), see  Technical Information 'Leaks in the area (front
side of transmission)'
Concluding work, see  Technical Information 'Concluding work'

AfterSales

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Technical Information

88/20

Preparatory work
Work
Procedure:

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Page 2 of 41

Information
•

Oil leaks must be clearly identifiable and reproducible

•

Engine oil and coolant must have reached operating temperature during a test drive

•

If oil is leaking from the final drive or hydraulic chamber breather, disconnect both hoses to find the
exact location of the leak

1

Remove rear cover, see  Workshop Manual '519419 Removing and installing rear cover'.

2

Take photos of the problem for PQIS.

3

Clean the transmission.

4

Spray possible leak points with leak-locating spray.

5

Perform a test drive.

6

Find oil leaks.

7

Take photos of the leak points found for PQIS.

AfterSales

Service

Technical Information

88/20

ENU

3734

3

Leaks in the area (right side of transmission)

Right side of transmission
Position

 Right
side of
transmission -1-

 Right
side of
transmission -2-

Leak area

Differential cover
1A - 1C

Rear transmission housing
seal
2A - 2B

Possible cause(s)

Repair measure

Sealing ring damaged (A)

Replace sealing ring, see 
Workshop Manual '391555 Replacing
flanged-shaft sealing ring'.

Screw loose (B)

Replace screws, see  Workshop
Manual '391555 Replacing
flanged-shaft sealing ring'.

O-ring damaged (C)

Replace O-ring, see  Workshop
Manual '391555 Replacing
flanged-shaft sealing ring'.

Screw loose (A)
Seal damaged (B)

AfterSales

Replace double clutch transmission, see

 Workshop Manual '373419 Removing
and installing double clutch transmission'.

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Page 3 of 41

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Service
3734

 Right
side of
transmission -3-

 Right
side of
transmission -4-

ENU

Technical Information

88/20

Front transmission housing
seal
3A - 3B
Central connector at the left

Screw loose (A)

Replace double clutch transmission, see

 Workshop Manual '373419 Removing

Seal damaged (B)

and installing double clutch transmission'.

Sealing ring damaged (A)

Replace wire harness, see  Workshop
Manual '387719 Removing and installing
transmission control mechanism'.
Tighten screws to 3 Nm (2 ftlb.).

4A - 4B

Connector leaking (B)

Screw plug

Sealing ring damaged

Replace screw and tighten to 27 Nm
(20 ftlb.). Re-use spring and sleeve
during installation.

Oil filler screw

Sealing ring damaged

Replace screw and tighten to
27 Nm (20 ftlb.).

Sealing ring damaged (A)

Replace sealing ring, see  Workshop
Manual '392255 Workshop Manual
'392255 Replacing sealing ring
for right halfshaft flange - double
clutch transmission'.'

Right halfshaft flange
damaged (B)

Replace halfshaft flange, see 
Workshop Manual '392519 Workshop
Manual '392519 Removing and
installing right halfshaft flange - double
clutch transmission'.'

Screw loose, leaking (C)

Replace screw, see  Workshop Manual
'392519 Workshop Manual '392519
Removing and installing right halfshaft
flange - double clutch transmission'.'

 Right
side of
transmission -5-

 Right
side of
transmission -6-

 Right
side of
transmission -7-

Parts Info (1A 1C):

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Page 4 of 41

Right halfshaft flange
7A - 7C

Parts required (for differential cover):
Part No.

Designation
– Use

Qty.

0DT301179

 Sealing ring
– Differential housing cover

1 ea.

0DT301225

 O-ring
– Differential housing cover

3 ea.

xxx

 Aluminium screw, M8 x 25
– Differential housing cover

16 ea.

AfterSales

Service

Technical Information

88/20

0DT311152

 Circlip
– Flanged shaft

1 ea.

PAF009145

 Internal hexagon round-head
bolt with O-ring
– Flanged shaft

1 ea.

WHT008727

 Cheese head bolt
– Drive shaft

12 ea.

9A740735700

 Plate
– Drive shaft

6 ea.

PAF008673

 Hexagon-head bolt
– Rear axle carrier

2 ea.

PAF008735

 Hexagon-head bolt
– Rear axle carrier

2 ea.

WHT007957

 Hexagon self-clinching nut
– Connecting link

2 ea.

ENU

3734

3

or
9A700781900

 Hexagon nut
– Connecting link (PDCC)

2 ea.

PAF909664

 Hexagon collar nut
– Lower trailing arm

2 ea.

PAF008674

 Hexagon flange bolt
– Lower trailing arm

2 ea.

WHT008676

 Hexagon-head bolt
– Strut

4 ea.

0DT321176

 Shaft sealing ring
– Flanged shaft

1 ea.

0DT321243

 Shaft sealing ring
– Flanged shaft

1 ea.

Also use for all-wheel drive
PAF911439

Invoicing (1A 1C):

 Cheese head bolt
– Cardan shaft

4 ea.

For documentation and warranty invoicing, enter the labor operations, PQIS coding and relevant part
numbers specified below in the warranty claim:

AfterSales

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Technical Information

88/20
I No.

APOS

Labor operation

39155556

Replacing flanged-shaft sealing ring

37341905

Removing and installing double clutch transmission (Coupé, without PDCC)

37341907

Removing and installing double clutch transmission (Coupé, with PDCC)

37341915

Removing and installing double clutch transmission (Targa/Cabriolet, without PDCC)

37341917

Removing and installing double clutch transmission (Targa/Cabriolet, with PDCC)
Choose PQIS coding based on the cause defined above:
1A – 1C

Parts Info (2A 2B):

Fault location (FES5)

39200

Cover for final drive

Damage category (SA4)

3013

Damaged

Parts required (for rear transmission housing seal):
Part No.

Designation
– Use

Qty.

0DT300041BX

 Transmission (I-no. G1F)

1 ea.

or
0DT300043BX

 Transmission with differential lock (I-no. G1F)

1 ea.

or
0DT300061BX

 Transmission (I-no. G1G)

1 ea.

or
0DT300063BX

 Transmission with differential lock (I-no. G1G)

1 ea.

Additional parts required

Jan 29, 2024