Installing Camshafts

1. Install camshafts -2-  .
   1. 1.1  Insert camshafts -2-  into the camshaft bearing frame at the required positions.

      Make sure that the gaps on the plain compression rings -5-  are facing up or down, never to the side.

      Make sure that the plain bearing -1-  is fitted as far as it will go against the cylinder head cover.

      Make sure that the thrust washer -6-  is inserted.

   2. 1.2  Make sure that each camshaft bearing cover -4-  is fitted with two tensioning sleeves -3-  .

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Positioning camshafts

2. Position camshaft bearing covers -1 to 4-  .
   1. 2.1  Position camshaft bearing covers -1 to 4-  according to the marking. > Marking for camshaft bearing covers  Make sure that the tensioning sleeves engage in the bores of the cylinder head cover.

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Marking for camshaft bearing covers

3. Fit camshaft bearing covers -1 to 4-  .
   1. 3.1  Replace camshaft bearing cover screws -Arrows-  .
   2. 3.2  Fit and tighten new  camshaft bearing cover screws -Arrows-  .
   • Tightening torque 9 Nm (6.5 ftlb.) 
   Fig 1: Camshaft Bearing Covers Screws Tightening Sequence

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.

   Camshaft bearing covers

4. Secure locking tools.

   Information 

   The camshaft clamp must be easy to insert and must not be fitted using a striking tool. 

   1. 4.1  Align camshafts -1-  and insert > T40331 - camshaft clamp /1,/4 and/5  with the inscription "A" facing away from the engine.
   2. 4.2  Secure > T40331 - camshaft clamp /1,/4 and/5  with > T40331 - camshaft clamp /9. 
   3. 4.3  Screw in > T40331 - camshaft clamp /9  by hand.
   4. 4.4  Tighten screws on the camshaft clamp -2-  to 9 Nm (6.5 ftlb.). 

Courtesy of PORSCHE CARS NORTH AMERICA, INC.

Camshaft clamp