83 240d throttle bushing install - PeachParts Mercedes-Benz Forum

benzedrine · #1 08-19-2011, 02:44 PM

Hello,
At the suggestion of a helpful member here, I just replaced the throttle bushing that mounts on the firewall of my 83 240d. The one thing that confused me is there are two mounting spots for the bushing right next to each other.

The original part was mounted on the mounting spot to the right. When I put the replacement part in the same spot, the linkage met the firewall at a funny angle, and didn't look right to me. I then mounted the new part on the left side mount- and it lined up perfectly straight.

What is the reason for the two mounting spots? Is it ok to use the mounting spot on the left? Hopefully the photo shows what I am trying to describe.

Thanks for any help!

Stretch · #2 08-19-2011, 02:48 PM

I get what you mean... the "problem" with these linkages is that there are several types out there for different engines, years, and global destinations...

Are you sure you got the correct on for your set up?

Does the new one look like the old?

benzedrine · #3 08-19-2011, 02:54 PM

Thanks for the quick reply. Yes the part looks identical.

Im not sure if it matters, but the original was in very rough shape- the white ball was completely broken/deformed and a previous owner had tried to rig it to still work.

Its possible they moved it to the right, when it was originally on the left. Just speculating, but I wouldn't be surprised at all.

benzedrine · #4 08-19-2011, 03:03 PM

Hmm starting to wonder, I just looked at several engine shots of 240d's and they are all mounted on the right.

Not sure what to think now. Without a doubt it fit in more straight and went together more easily on the left.

Biodiesel300TD · #5 08-19-2011, 04:34 PM

It probably doesn't matter as long as you are getting full movement of the linkages and the petal, as well as nothing binding up. Get in the car and push the petal down and have some one watch to make sure the linkages are moving through the whole range with the movement of the petal, and not leaving the idle high or not reaching max rpm.

benzedrine · #6 08-19-2011, 04:51 PM

Ok thats exactly what Im thinking, I appreciate the response. Really the only part of the linkage that seems at all affected is the the rod that goes back to the firewall. I'll follow your suggestion and see how it goes. Thanks

tangofox007 · #7 08-19-2011, 05:09 PM

Quote:

Originally Posted by benzedrine

Hmm starting to wonder, I just looked at several engine shots of 240d's and they are all mounted on the right.

Not sure what to think now.

Don't think anything. The original part was in the correct place to start with. Put the new part where the original part was and quit imagining things about "funny" angles.

benzedrine · #8 08-19-2011, 05:33 PM

Ok quick update, I tried out both sides and the right is definitely the correct one. HUGE improvement in pedal feel and ability to climb hills. Thanks for the help!

Quote:

Originally Posted by tangofox007

Don't think anything. The original part was in the correct place to start with. Put the new part where the original part was and quit imagining things about "funny" angles.

Its hard to know what is correct when I have never done the job before and it was obvious the previous owner had tinkered with it. In the correct spot- the rod is at an obvious slant. It turns out that is normal. I really appreciate all the help.

tangofox007 · #9 08-19-2011, 05:53 PM

Quote:

Originally Posted by benzedrine

Its hard to know what is correct when I have never done the job before and it was obvious the previous owner had tinkered with it.

Understand. Glad you got it fixed and can see the benefit. I know it wasn't exactly an inexpensive part, but the part is a lot cheaper than an accident resulting from a jammed accelerator linkage.

sokoloff · #10 08-20-2011, 11:32 PM

Just went out to look at my 240D - original owner, never messed with that bushing. Mine is in the other mounting hole, i.e. the one closest to the driver's side fender.