Camshaft, Lifters and Push Rods: Locations

Valvetrain, assembly overview





1 - 8 Nm plus an additional 1/4 turn (90°)

2 - Bearing bracket
^ With integrated camshaft bearings
^ Clean sealing surface, reworking is not permitted.
^ Remove old sealant residue.

3 - Chain sprocket
^ For exhaust camshaft

4 - 60 Nm plus an additional 1/4 turn (90°)
^ Replace

5 - 60 Nm plus an additional 1/4 turn (90°)
^ Replace

6 - Camshaft adjuster
^ For intake camshaft

7 - Seals
^ For camshaft adjuster
^ Note installation position

8 - Timing chain

9 - Cylinder head
^ Do not re-grind valve seats, only hand-lapping is permitted.

10 - Hydraulic valve play balancing element
^ Do not interchange
^ Lubricate contact surface

11 - Valve keepers

12 - Top valve spring retainer

13 - Valve spring

14 - Valve stem seal

15 - Valve guide

16 - Intake valve
^ Do not rework, only lapping is permitted

17 - Exhaust valve
^ Do not rework, only lapping is permitted

18 - Sealing plugs
^ Replace

19 - Intake camshaft
^ Check radial clearance using Plastigage(R) (roller rocker lever removed)
- Wear limit: 0.1 mm
^ Run-out: max. 0.035 mm
^ Axial clearance: max. 0.17 mm

20 - Exhaust camshaft
^ Check radial clearance using Plastigage(R) (roller rocker lever removed)
- Wear limit: 0.1 mm
^ Run-out: max. 0.035 mm
^ Axial clearance: max. 0.17 mm