Disassembling Engine

NOTIFICATION 

Interchanged or dirty bucket tappets 

• Scoring on cylinder head 

  →Since the bucket tappets have been run in the fitting bores, do not interchange them.

  →Absolute cleanliness is essential.

Information 

Have a collection pan and some cloths ready before starting work on the engine block. Close off open hoses immediately after opening them using suitable stoppers. Residual fluid can leak out.

Information 

For many components, it is only necessary to partially disassemble the engine. The extent of disassembly depends on the damage and scope of repairs to be carried out.

When replacing the cylinder-head gasket, some add-on parts, such as the vacuum pump, injectors and exhaust manifolds, remain on the cylinder head. In this case, the cylinder head can be lifted off the crankcase with all add-on parts intact.

Information 

Detailed information on 

• tightening torque,
• tightening sequence,
• component allocations, classification,
• surface treatment,
• replacing parts,
• Applying sealant

can be found in the following documents: 

• > WM, 1X00IN TECHNICAL VALUES - V6 BITURBO
• > 2X00IN TECHNICAL VALUES
• > WM 3X00IN TECHNICAL VALUES, TRANSMISSION (EXCEPT CAYENNE, CAYENNE GTS, CAYENNE TURBO S, CAYENNE S, CAYENNE S E-HYBRID, CAYENNE TURBO, CAYENNE (3.0))

1. Remove brackets for engine mounts.
2. Remove drive belt and deflection rollers.

   > 137819 REMOVING AND INSTALLING DRIVE BELT

3. Remove air-conditioning compressor.

   > WM 873419 REMOVING AND INSTALLING ELECTRIC AIR-CONDITIONING COMPRESSOR (CAYENNE GTS, CAYENNE TURBO S, CAYENNE S E-HYBRID)

4. Remove exhaust manifold with turbocharger.

   > WM 261019 REMOVING AND INSTALLING EXHAUST MANIFOLD (CAYENNE)

   1. Remove turbocharger oil lines.
   2. Remove turbocharger coolant lines.
5. Remove generator.

   > WM 272219 REMOVING AND INSTALLING GENERATOR (CAYENNE S, CAYENNE TURBO)

6. Remove ignition coils.

   > WM 282020 REMOVING AND INSTALLING IGNITION COILS (CAYENNE S & CAYENNE GTS)

7. Remove spark plugs.

   > WM 287020 REMOVING AND INSTALLING SPARK PLUGS (CAYENNE)

8. Remove positive crankcase ventilation.

   > 105119 REMOVING AND INSTALLING POSITIVE CRANKCASE VENTILATION VALVE 

9. Remove high-pressure pump.

   > WM 246319 REMOVING AND INSTALLING HIGH-PRESSURE PUMP (CAYENNE)

10. Remove fuel lines.

    > WM 249019 REMOVING AND INSTALLING FUEL LINE (HIGH-PRESSURE) [CAYENNE S E-HYBRID & CAYENNE (3.0)]

11. Remove the intake-air distributor.

    > WM 244619 REMOVING AND INSTALLING INTAKE-AIR DISTRIBUTOR (CAYENNE)

12. Remove fuel injectors with fuel collection pipe.

    > WM 244020 REMOVING AND INSTALLING FUEL INJECTORS (V6) [CAYENNE S, CAYENNE (3.0)]

13. Remove engine wire harness.

    > WM 975219 REMOVING AND INSTALLING WIRE HARNESS FOR ENGINE

14. Remove secondary-air lines.
15. Remove the secondary-air pump.

    > 266519 REMOVING AND INSTALLING THE SECONDARY-AIR PUMP

16. Remove vacuum reservoir.

    > WM 245419 REMOVING AND INSTALLING VACUUM RESERVOIR (CAYENNE S & CAYENNE GTS)

17. Remove front coolant lines for engine.
18. Remove coolant pump housing and coolant pump.

    > 195019 REMOVING AND INSTALLING COOLANT PUMP

19. Remove thermostat housing.

    > WM, 195519 REMOVING AND INSTALLING COOLANT REGULATOR HOUSING

20. Remove pulley.

    > WM, 137619 REMOVING AND INSTALLING PULLEY

21. Remove belt tensioner.

    > WM, 137319 REMOVING AND INSTALLING BELT TENSIONER DAMPER

22. Remove cylinder head cover.

    > WM 158219 REMOVING AND INSTALLING CYLINDER HEAD COVER (V6) (CAYENNE GTS & CAYENNE S)

23. Remove pulse sender.

    > WM 287319 REMOVING AND INSTALLING CRANKSHAFT PULSE SENDER (CAYENNE S & CAYENNE GTS)

24. Remove oil pan.

    > 175019 REMOVING AND INSTALLING OIL PAN

25. Remove oil cooler.

    > WM, 174019 REMOVING AND INSTALLING OIL COOLER

26. Remove oil pipes and oil plate.
27. Remove oil pump drive for oil pump and accessories.

    > 172019 REMOVING AND INSTALLING OIL PUMP

28. Remove oil pressure regulator (oil pan).

    > WM 172619 REMOVING AND INSTALLING PRESSURE-REGULATING VALVE (CAYENNE S, CAYENNE TURBO, CAYENNE GTS, CAYENNE TURBO S)

29. Remove oil pressure sensor.

    > 170419 REMOVING AND INSTALLING OIL-PRESSURE SENDER

30. Remove oil guide housing.

    > WM 175019 REMOVING AND INSTALLING OIL GUIDE HOUSING (CAYENNE S, CAYENNE TURBO, CAYENNE GTS, CAYENNE TURBO S)

31. Remove the timing-case cover.

    > WM, 153319 REMOVING AND INSTALLING UPPER CHAIN HOUSING COVER

32. Remove timing chain.

    > 153519 REMOVING AND INSTALLING TIMING CHAIN

33. Remove camshaft controllers.

    > WM, 158419 REMOVING AND INSTALLING ACTUATOR FOR CAMSHAFT

34. Remove camshafts.

    > WM 150520 REMOVING AND INSTALLING CAMSHAFTS (V6) (CAYENNE S & CAYENNE GTS)

35. Remove cylinder head.

    > 157019 REMOVING AND INSTALLING CYLINDER HEAD

36. Remove knock sensor.

    > 287219 REMOVING AND INSTALLING KNOCK SENSOR

37. Remove starter.

    > WM 276019 REMOVING AND INSTALLING STARTER (V6) (CAYENNE GTS & CAYENNE S)

38. Remove lower part of crankcase.
    1. Group 10 - Crankcase:

       > WM, 1X00IN TECHNICAL VALUES - V6 BITURBO

39. Remove connecting rod with piston.

    > 131020 REMOVING AND INSTALLING PISTONS

40. Remove bearing shells and crankshaft