Chain Length, Checking

CAUTION:

This procedure contains mandatory replaceable parts. Refer to component overview prior to starting procedure.

Mandatory Replacement Parts

NOTE:

If due to complaints (for example noises) an elongated camshaft timing chain is suspected, the chain length can be checked as described as follows.

-- Remove the plug -arrow-. The plugs must be replaced.

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-- Turn the vibration damper in direction of engine rotation until the chain tensioner piston is maximally driven out in direction of -arrow-.

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-- Count the visible piston threads.

NOTE:

The visible threads are all of the threads that are located to the right of the chain tensioner housing -arrow-.

If six or fewer threads are visible: the camshaft timing chain does not need to be replaced.
If seven or more threads are visible: the camshaft timing chain must be replaced. Refer to CAMSHAFT TIMING CHAIN, REMOVING AND INSTALLING .