Removing Camshaft Controller

Information 

• Always check all components, such as timing chains, sprockets, locking pins and chamfers for wear or damage. Always replace faulty components. 
• Always replace all fastening screws for the sprockets. 
• Before removing the timing chains, mark the running direction with a coloured pen. 
• Maintain the same timing chain running direction during re-installation. 
• Never use a prick punch or file for marking. 

Information 

Fix camshaft in place

• To loosen the fastening screws on the camshaft controller, counter the relevant camshaft with an open-ended wrench (a/f 27). 
• To prevent damage, remove the camshaft guide  .
  Fig 1: Overview Of Timing Chains

  Courtesy of PORSCHE CARS NORTH AMERICA, INC.

1. Timing chain housing
2. Fastening screw
3. Timing chain
4. Outlet camshaft controller
5. Sealing ring
6. Oil pump
7. Fastening screw
8. Tensioning rail
9. Chain tensioner for timing chain
10. Sealing ring
11. Bearing pin
12. Sprocket
13. Sprocket
14. Fastening screw
15. Chain tensioner for drive chain
16. Drive gear wheel for drive chain
17. Drive chain
18. Guide rail for drive chain
19. Bolt
20. Fastening screw on guide rail for timing chain
21. Fastening screw on guide rail for timing chain
22. Fastening screws for camshaft controllers
23. Guide rail for timing chain
24. Drive gear wheel for high-pressure pump
25. Intake camshaft controller
26. Valve for outlet camshaft controller
27. Valve for intake camshaft controller
28. Guide rail

1. Relieve the timing chain.
   1. 1.1. Unscrew the chain tensioner -9-  → Checking the timing  .
   2. 1.2. Detach upper guide rail -23-  by unscrewing the fastening screw -21-  . Do not remove the guide rail.
   3. 1.3. Lift up the timing chain at the camshaft controllers and remove it from the camshaft controllers -4 and 25-  .
2. Remove camshaft controllers.
   1. 2.1. Remove outlet camshaft controller -4-  by unscrewing the fastening screw -22-  . Counter the camshaft at the hexagon with an open-ended wrench when doing this.
   2. 2.2. Remove intake camshaft controller -25-  by unscrewing the fastening screw -22-  . Counter the camshaft at the hexagon with an open-ended wrench when doing this.
   Fig 2: Removing Camshaft Controllers

   Courtesy of PORSCHE CARS NORTH AMERICA, INC.