Chain Tensioner Cap Fell into Engine
Embarrassing post but I went to replace my chain tensioners, and after the passenger side was smooth, the driver side was a complete b****. The tensioner fought coming out and going in. And at the end of it all the cap from the new tensioner fell into the timing chain compartment.
Any ideas on how I can take it out? Any tools that are thin enough to get in there? It's a really tight fit.
Let's say I left it there...what can happen? I can just use a cap from the old tensioner I took out.
Here's a picture for reference.
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I even had an air compressor to blow in the compartment to see if it would rise out, but it ended up moving the cap to a more favorable position for me to pull it out!




There is a cheap flexible tool with three prongs that come out when operator press on button.
Let me look around Amazon inventory...
at your door step tomorrow... $12
this popular grabber even has 4-claws!
happy fishing
🤞
Last edited by CaliBenzDriver; Jun 7, 2024 at 01:25 AM.
There is a cheap flexible tool with three prongs that come out when operator press on button.
Let me look around Amazon inventory...
at your door step tomorrow... $12
this popular grabber even has 4-claws!
happy fishing
🤞




I would not leave that piece of plastic roaming around your engine... once it gets chewed up by the chain sprockets then hundreds of chunkies will be competing to get wedged into your oil galleries.
> Surgeon practitioner:
perhaps you can practice picking up the cap of passenger tensioner before actual surgery.
🤞
> PLAN B.... glue
How about a drop of crazy-glue on a stick... wait 10sec for glue to react with oily plastic cap... there you have it !!




I know the location of the green plastic cap.............. but it is not engine block side but timing cover side.
It is sitting on the coolant path round port, where the o-rings ( 1 per bank , so total 2 ) I will want to replace and its a nightmare job.




Estimated depth of the green plastic cap, based on cylinder head to block interface in green line.
Quite deep based on your available working room, but a hose can enter for sure like your boroscope
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It is light and should want to fly out easily even if you cant see it --- DOUBLE CHECK THE CAPTURE BAG before not believing you have it.
We all need to learn with our thinking cap, specially on diverse mixed issues. We let experience teach us best and bull s....t walk.
Without everyone clapping together we woukd.go anywhere. Every great solution is interesting learn about the best German Mercedes system.
Lets see what is gonna do better in how long ??
Last edited by CaliBenzDriver; Jun 8, 2024 at 02:12 AM.

One test to do is hold hand under tygon blocking it off to make sure that the vacuum doesnt drop its suction ball internally. For some reason some of the newer ones will do that and lose suction. Really annoying.





I would NOT use any pneumatic device, as the air can blow (or suck) the cap anywhere. You want a positive touch tool that will stick once it makes contact.
Last edited by DFWdude; Jun 11, 2024 at 08:59 AM.

I would NOT use any pneumatic device, as the air can blow (or suck) the cap anywhere. You want a positive touch tool that will stick once it makes contact.
I even had an air compressor to blow in the compartment to see if it would rise out, but it ended up moving the cap to a more favorable position for me to pull it out!
Last edited by DeanMassy; Jul 5, 2024 at 01:17 PM.





