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Removing Valve Tappets Of Cylinder Bank 1 - 3

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  1. Move camshafts to basic position The groove in the camshaft must face outward toward the cylinder head cover.
    Fig 1: Locating Groove In Camshaft - Cylinder Bank 1-3
    G03092499Courtesy of PORSCHE OF NORTH AMERICA, INC.

    View from the flywheel side

  2. Turn engine on assembly support until cylinder bank 1 - 3 faces upwards.
  3. Unscrew chain tensioner of cylinder bank 1 - 3.
    Fig 2: Unscrewing Chain Tensioner - Cylinder Bank 1-3
    G03092500Courtesy of PORSCHE OF NORTH AMERICA, INC.
  4. Detach and remove oil extraction pump at cylinder head 1 - 3 on flywheel side.
    Fig 3: Removing Oil Extraction Pump At Cylinder Head 1-3
    G03092501Courtesy of PORSCHE OF NORTH AMERICA, INC.
  5. Unscrew hexagon-head bolts M6 x 20 (2 ea.). Remove closure cap from tensioning element (VarioCam).
  6. Remove cylinder head cover. Loosen hexagon-head bolts from the outside to the inside.
  7. Fasten special tool 9611, holding-down device for camshafts, with auxiliary screws M6 x 45.
    Fig 4: Installing Special Tool 9611, Holding-Down Device For Camshafts - Cylinder Head 1-3
    G03092502Courtesy of PORSCHE OF NORTH AMERICA, INC.
  8. Relieve camshaft tensioning element with special tool, tensioning screw 9632.
    Fig 5: Relieving Camshaft Tensioning Element With Tensioning Screw (9632)
    G03092503Courtesy of PORSCHE OF NORTH AMERICA, INC.
    NOTE:
    • Screw in tensioning screw only so far as to slightly relieve the chain.
  9. Unscrew three fastening screws (M6 x 95) for tensioning element.
  10. Affix auxiliary chain tensioner (screw in by approx. 3 turns). Undo four hexagon-head bolts (M6 x 15) on the chain sprocket. Remove auxiliary chain tensioner again.
    Fig 6: Locating Hexagon Bolts On Chain Sprocket
    G03092504Courtesy of PORSCHE OF NORTH AMERICA, INC.
  11. Remove drive plate. Connect sprocket wheel and chain with a tie wrap (installation position). With a second tie wrap suspend the sprocket wheel and chain to the side under slight tension.
    Fig 7: Identifying Sprocket Wheel & Chain
    G03092505Courtesy of PORSCHE OF NORTH AMERICA, INC.
  12. Detach two bearing saddles. Lever bearing saddles out of the guide sleeves.
  13. Remove holding-down device (special tool 9611) from the camshafts.
  14. Carefully lift the complete unit, camshafts with chain and tensioning element out of the cylinder head. The chain must not jump over.
    Fig 8: Identifying Chain And Tensioning Element
    G03092506Courtesy of PORSCHE OF NORTH AMERICA, INC.
  15. Lift out valve tappets with a magnet.
  16. Detach guide for valve tappets. Undo the pan-head screws (15 ea.) from the outside to the inside, and remove the guide.
Fig 9: Locating Guide For Valve Tappet Pan Head Screws
G03092507Courtesy of PORSCHE OF NORTH AMERICA, INC.
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