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What's inside of the new updated chain tensioner....

DougD

New member
I'm replacing the timing chain tensioner on my 2011 gti and allowed the plunger to come out of the unit. While looking on the shop floor for the spring and plunger i also found a ball bearing. I'm wondering if it belongs in the tensioner unit like a check ball, or if it doesn't belong at all.....?
 

BudgetPhoenix

Autocross Champion
Good question I haven't seen a pic of a new one cut open yet. I do know there's a check ball in the cam bridge assembly though. I've heard of them breaking apart in the past and the bearing falling out but its usually only the screen that gets damaged.

Edit* looking at cutaways of other manufacturers tensioners on google a few of them do incorporate a check ball in the design.
 
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