Cayenne GTS (9PA) V8-4.8L (2008)
7 - Shaft sealing ring - Do not touch sealing ring lip! Clean crankshaft flange and oil lightly
8 - View of crankshaft flange
9 - Crankshaft bearing classification (example: YYYYY-BBBB; 5 main shaft bearings with yellow marking, 4 double (8) connecting rod bearings
with blue marking) - For numbering, see A
A - Direction of travel (main bearing 1 is the first in direction of travel against output)
Identification of pistons
Information
The piston is identified as a spare part by the following characteristics: one dimensional group X, Naturally aspirated or Turbo, cylinder bank 1 to 4 or
5 to 8.
The piston is installed as standard in two additional weight tolerances: + and -.
This information is all engraved on the piston crown. To identify the piston uniquely, the piston must be cleaned carefully (brass brush, ultrasound
bath).
Markings on piston crown: Replacement pistons are only available from dimensional group X and in two weight tolerances '+' and '-'.
Piston classification
1 - Inspection stamp (supplier)
2 - Arrow marking in direction of travel
3 - Porsche short numeric code without main or middle number
4 - Cylinder bank identification
5 - Marking area for weight group (weight tolerance)
6 - Marking area for dimension group
7 - Barcode 128 (short numeric code (without main group) and weight group)
8 - Direction of travel arrow
9 - Short numeric code (supplier)
1. In the event of repairs, the removed piston must be cleaned and identified. If the piston needs to be replaced, an X piston with the identified weight
tolerance + or - for the correct cylinder bank is ordered and installed as a spare part.
Removing pistons
Information
Note the association between the connecting-rod big end and the connecting-rod bearing cap as the cracked connecting rods only fit in one