If the camshaft drive chain tensioner fails
I have got now for the
second time the same phenomenon. The chain tensioner lost the automatic
tensioning efficacy and fails.
The eye of the tensioning spring is pulled out, with the result of a
totally motor failure.
Everybody who dismounts his engine should pay attention on hinds of
abrasion around the spring of the chain tensioner.
Symptoms :
First a light noise (`tickern`) ( also exchangeable with the valve play ) .This
noise increases and ends in a
vehement `hacking`, which you can feel.
This development can last about
10.000km. Attention!! Waiting till the end results in capital motor damages.
Consequences:
First the spring, which is responsible for the tensioning function of the
tensioner, pulls out.
The tensioner totally looses the tensioning efficacy ,the chain can flash over
and the valve timing will be out of adjustment.
Side-view of the chain tensioner
Abrasion ( arrow ) in front of the spring eyelet.
Spring eyelet ( arrow ) is worn out.
Take care, that the spacer is mounted in the correct way: