Ti, 1010 Crankcase/Pistons/Piston Rings Need To Be Replaced - Mixed Installation Is Not Permitted (25/13)

Information 

This Technical Information replaces the TI dated May 8, 2013.

Changes/additions  compared to the previous Technical Information:

Section 'Situation - Spare parts requirements' for pistons and piston rings  :

Text changed to "now available again  ".

Model year 

From 2008

Vehicle Type: 

Cayenne S (9PA)/Cayenne Turbo (9PA)/Cayenne Turbo S (9PA) 

Cayenne S (92A)/Cayenne Turbo (92A) 

Panamera/Panamera S/Panamera Turbo/Panamera Turbo S 

Concerns: 

Cylinder liner in crankcase 

Information: 

If piston rings/pistons or the crankcase need to be replaced, a mixed installation can damage the cylinder liner. 

Due to

• modified production methods  during the manufacture of the crankcase => from smooth honing to structural honing 
• and the use of a different coating on the piston rings  (now DLC-coated)

only the combinations specified below are permitted. 

=> Before carrying out any other work, check whether the cylinder liners are smooth-honed or structurally honed:

1. A) Cylinder liners are smooth-honed  (> Figure 1  , old - crankcase no longer available)

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   • Spare parts requirements:  One or more pistons and piston rings (old type without DLC coating => now available again) 

   => All pistons with piston rings can be replaced again in the usual way. 

   • Spare parts requirements:  Crankcase (old type, smooth-honed - no longer available)

   => All pistons with piston rings and the crankcase must be replaced with new components.

   * When replacing the crankcase, refer to TI 24/13

   > 135900 CRANKSHAFT SEALING RING (TRANSMISSION SIDE) NEEDS TO BE REPLACED: CHECKING PRESS-IN DEPTH (24/13)

2. B) Cylinder liners are structurally honed  (> Figure 2  , new type)

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

• Spare parts requirements:  One or more pistons and piston rings

=> Only replace the required piston(s). 

• Spare parts requirements:  Crankcase

=> Only replace the crankcase. 

* When replacing the crankcase, refer to TI 24/13

> 135900 CRANKSHAFT SEALING RING (TRANSMISSION SIDE) NEEDS TO BE REPLACED: CHECKING PRESS-IN DEPTH (24/13)

Date of Introduction: 

Only engines with structurally honed cylinder liners are used in vehicles as of the following engine numbers:

References: 

> 100137 DISASSEMBLING AND ASSEMBLING ENGINE