Installing Timing Chain

→ Mark running direction of timing chains.

Information 

• If the tensioning element was removed from the chain tensioner, check installation position. The bore in the floor of the housing must be facing the chain tensioner. The piston must be facing the tensioning rail. 
• Replace screws that are tightened to an additional torque angle. 

1. Place the left timing chain on the drive sprocket according to the markings made during removal and guide it up to the cylinder head.

   Press the guide rail on the chain tensioner for the left timing chain down and lock the chain tensioner with the locking pin -T40071-  .

   Fig 1: Identifying Left Locking Pin

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
2. Install timing chain.
   1. 2.1. Place the right timing chain on the drive sprocket according to the markings made during removal and guide it up to the cylinder head.
   2. 2.2. Install drive sprocket.
   3. 2.3. Tighten screw -1-  for the bearing pin for the drive sprocket.

      Information 

      Disregard arrow.

   4. 2.4. Locking pin -T40071-  can now be removed.
      Fig 2: Identifying Timing Drive Mechanism

      Courtesy of PORSCHE CARS NORTH AMERICA, INC.
3. Install chain tensioner on the right cylinder head. Tighten screws -1-  and -2-  .
   Fig 3: Identifying Right Chain Tensioner With Screws

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.
4. Further installation is performed in reverse order.