Cylinder Head Overview

Fig 1: Cylinder Head, Assembly Overview

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

1. Bolt
   • 10 Nm
2. Cylinder Head Cover
   • With the pressure regulator valve for the crankshaft housing ventilation.
   • Tightening sequence, refer to Fig 2.
   • Removing and installing, refer to CYLINDER HEAD COVER .
3. Cylinder Head Cover Gasket
   • Replace if damaged or leaking.
4. Crankcase Ventilation Hose
   • To the intake manifold.
5. Cap
6. Gasket
   • Replace if damaged or leaking.
7. Bolt
   • 10 Nm
8. Wire Bracket
9. Seal
   • Removing and installing, refer to TIMING CHAIN COVER SEAL .
10. Wire Bracket
11. Timing Chain Cover
    • Removing and installing, refer to TIMING CHAIN COVER .
12. Bolt
    • 2 Nm
13. Camshaft Adjustment Valve 1 -N205-
    • Check using the vehicle diagnostic tester.
14. O-ring
    • Replace if damaged.
15. Bolt
    • 10 Nm
16. Camshaft Position Sensor -G40-
17. Transport Strap
18. Bolt
    • 25 Nm
19. Cylinder Head Gasket
    • Always replace.
    • After replacing, replace the entire amount of coolant.
20. Cylinder Head
    • Removing and installing, refer to CYLINDER HEAD .
    • Checking the cylinder head for warpage, refer to Fig 3.
    • It is not permitted to rework the sealing surface.
    • With the coolant pipe connection pressed in.

      -- If necessary, remove any coolant deposits with a brass wire brush or with a fine sandpaper (minimum 100 grit).

      -- If the pipe connection is worn, replace it using liquid locking fluid D 000 600 A2.

21. Cap
    • Only on engines with Secondary Air Injection (AIR).
    • AIR system overview. Refer to SECONDARY AIR INJECTION SYSTEM OVERVIEW .
22. Gasket
    • Always replace.
23. Bolt
    • 40 Nm + an additional 180° (1/2) additional turn.
    • Always replace.
    • Follow the loosening and tightening sequence. Refer to CYLINDER HEAD .
24. Wire Bracket
    • For the heated oxygen sensor -G39-.

Fig 2: Cylinder Head Cover Bolts Removal Sequence

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

Fig 3: Checking Cylinder Head For Distortion

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

-- Check the cylinder head at multiple points for distortion, using a straight edge and feeler gauges.

• Maximum permissible distortion: 0.05 mm

If this value is exceeded, the cylinder head must be replaced. It is not permissible to rework the sealing surface.