Timing Components: Testing and Inspection

Valve timing, checking

Special tools and equipment






- T10068 camshaft ruler

Test sequence

- Remove noise insulation pan
- Removing cylinder head cover






- Adjust crankshaft at securing bolt of harmonic balancer in direction of engine rotation to TDC cyl. 1 marking (arrow).






- It must be possible to insert T10068 camshaft ruler into both shaft grooves.
If the camshaft ruler cannot be inserted:
- Turn crankshaft one more rotation in direction of engine rotation.

Note:

- If the camshaft ruler still cannot be inserted, turn crankshaft in direction of engine rotation until approximately 5 mm above the TDC position cyl. 1 (limited via tolerances of drive chains).
- Check adjustment markings of camshaft adjuster with the marking on the control housing:






- Markings -A- and -B- on the camshaft adjusters must match the notches (arrows) of control housing -C-.
- The milled tooth -1- or -2- from camshaft adjuster also points to the notch of control housing -C-.

Note:

- Illustration shows view with removed cover piece.
- If the markings to not match:
- Adjust valve timing.