Drive belt adjustment nut/rod - PeachParts Mercedes-Benz Forum

erc22 · #1 11-28-2004, 08:41 PM

The drive belt adjustment rod (MB '87 190E-2.3), which has the nut threaded onto it, has either detached itself from I assume the tensioning roller or broken off from it. This is a very difficult area to get a view of how the rod is supposed to be attached. Can someone please explain what needs to be done to reattach the rod?

Thanks,

erc22

Gilly · #2 11-28-2004, 08:47 PM

What happened that it became attached? May be easier to tell you what to do.
Gilly

erc22 · #3 11-28-2004, 09:24 PM

Gilly,

If you give me your phone number I will call you.

erc22

Gilly · #4 11-28-2004, 09:34 PM

Like hell you will........

Gilly

erc22 · #5 11-28-2004, 10:10 PM

Sorry Gilly, misunderstood what you had written.

I noticed that the drive belt seemed to be loose so I tried to tighten the tension a little. I did loosen the large bolt first. When I tightened the adjustment nut it didn't seem to affect the tension and then the rod just seemed to detach itself or it was already broken or partially broken.

Thanks

Gilly · #6 11-29-2004, 05:04 AM

OH, I see where what I said could be misunderstood. Oh well, the number of times I've told someone to go to hell on the forums I can count on one finger (guess which one) Hee hee, just kiddin'.
OK, more than likely the part on the tensioner the rod clips in to broke off. There can be several reasons for this, but ultimately the reason would be because the tensioner has worn out (also this is why it didn't tighten up). There is an "L" at the end of the rod and it slips into and is clipped into a small protusion on the tensioner, the protrusion can break off if for example the nut on the rod runs out of thread (twists and breaks the protrusion) or the rod could have just popped out, but if you ran out of thread in this case, it's because the tensioner (again) is worn out, OR the tensoner itself may have hit a bolt or other obstruction on the front of the engine as you tightened it, which jammed the tensioner and again, the rod broke off this protrusion (like an "ear") that it slips in to or the rod popped out, but once again the reason the tensioner jammed up against something is because it's worn out.
So, you can try looking and seeing if the tensioner is broke or not (I'd just start taking the tensioner off, actually), but ultimately I'm really really sure you need a new tensioner, it's a common problem, not a fantastic design.
Gilly