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Home >> Porsche >> 2012 >> Panamera S >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> 13 - Engine - CRANKGEAR, Pistons -- PANAMERA (970) >> WM 131020 Removing And Installing Pistons (Except PANAMERA S E-Hybrid, PANAMERA S Hybrid, PANAMERA Executive, PANAMERA GTS, PANAMERA Turbo S, PANAMERA 4S Sport Edition, PANAMERA 4 Executive, PANAMERA Platinum Ed., PANAMERA 4 Platinum Ed.) >> Information >> Component Overview

Component Overview

Fig 1: Identifying Piston And Connecting Rod Components
G09804303Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Piston-ring set; oil with engine oil; TOP marking facing upwards; oil scraper ring down; ring gaps offset by 120°
  2. Piston; different on naturally aspirated and turbo engines; combustion chamber recess facing center of engine; left and right different; direction of travel arrow in direction of travel
  3. Piston-pin circlip (positioned at 6 o'clock or 11 o'clock)
  4. Piston pin; oil
  5. Connecting rod
  6. Connecting rod bolt; replace as it must be tightened in the plastic area; oil screw
  7. Connecting rod bearing shells; oil with engine oil
    Fig 2: Locating Connecting-Rod Bearing Shells
    G09804304Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. View A (identification area for connecting-rod number; fit connecting rod with identification area facing exhaust side; markings on rod and cap must be on the same side)
  2. View B (fit bearing shells flush and press in by hand)
  3. View C (fit bearing shells flush and press in by hand)
Fig 3: Identifying Piston Classification (Naturally Aspirated Engine)
G09804305Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Marking for dimension group (just one permitted per engine, in this case x)
  2. Porsche short numeric code without main or middle number
  3. Short numeric code (supplier)
  4. Marking area for weight group (just one permitted per engine, + or -)
  5. Cylinder bank identification (V6 1-3 and 4-6) (V8 1-4 and 5-8)
  6. Barcode 128 (short numeric code without main group or weight group)
  7. Arrow marking in direction of travel
  8. Identification for dimension group
  9. Arrow marking in direction of travel
  10. Inspection stamp (supplier)
Fig 4: Identifying Piston Classification (Turbo Engine)
G09804306Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Arrow marking in direction of travel
  2. Porsche short numeric code without main or middle number
  3. Short numeric code (supplier)
  4. Cylinder bank identification (V8 1-4 and 5-8)
  5. Marking area for weight group (just one permitted per engine, + or -)
  6. Barcode 128 (short numeric code without main group or weight group)
  7. Arrow marking in direction of travel
  8. Marking for dimension group (just one permitted per engine, in this case x)
  9. Marking area for weight group (just one permitted per engine, + or -)
  10. Inspection stamp (supplier)
Fig 5: Identifying Crankshaft Components
G09804307Courtesy of PORSCHE CARS NORTH AMERICA, INC.
  1. Crankshaft
  2. Straight pin, 6 x 20
  3. Spring, 5 x 6.5
  4. Thrust washer (grooves facing out)
  5. Main bearing shell, upper
  6. Main bearing shell, lower
  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 (four types) Y  Yellow; B  Blue, R  Red; N  Green => (example: YYYYY-BBBB; 5 main shaft bearings with yellow marking, 4 double (8) connecting rod bearings with blue marking) => For numbering, see A 
  1. Direction of travel (main bearing 1 is the first in direction of travel against output)
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