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  #1  
Old 08-14-2011, 07:05 PM
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83 240d valve adjustment- linkage

Hello,
Im hoping to do my first valve adjustment on my 83 240d. Ive read up and looked at the instructions on diesel giant. The linkage on my 240d seems to be different- and Im confused how to disconnect the area by the manual engine stop lever.

There is a rod that goes straight back to the firewall, and I dont see how to easily separate it from the valve cover. The diesel giant instructions suggest disconnecting the bare minimum linkage and then resting the valve cover on the fender.

Hopefully the photos show what I am trying to describe.

My car is definitely overdue for a valve adjustment, Id really appreciate any help getting started on this. Thanks!

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83 240d valve adjustment- linkage-img-20110814-00033.jpg   83 240d valve adjustment- linkage-img-20110814-00035.jpg  
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  #2  
Old 08-14-2011, 07:48 PM
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Solved!

Here's a solution posted by Govert70227 at benzworld-

Disconnect the securing pin at red arrow #1. Disconnect the socket at red arrow #2.

Now move the rod in the direction of the green arrow #1, it should come out of the rubber piece on the firewall. Now move rod in the direction of blue arrow #2. Perhaps you'll need to remove a clip, but I cannot see it in the picture.

And you'll probably have to disconnect at blue arrow #3.
Attached Thumbnails
83 240d valve adjustment- linkage-83-240d-valve-adjustment-linkage-img-20110814-00033.jpg  
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  #4  
Old 08-15-2011, 07:48 AM
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Thanks! Thats the black rubber mounted on the firewall, correct? Just curious, how could you tell it needs to be replaced? Im sure you're right, Im just wondering how its supposed to look.
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  #5  
Old 08-15-2011, 08:39 AM
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Quote:
Originally Posted by benzedrine View Post
Just curious, how could you tell it needs to be replaced?
That piece of bent wire supporting the linkage rod wasn't installed in Stuttgart.
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  #6  
Old 08-15-2011, 12:32 PM
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Its funny I wasn't sure what to make of that when I saw it. I assumed it was there to catch the rod if the rubber part failed.

I'll take a look at it this afternoon. The wire is mounted on a little tab that looked factory to me. It looks like it has been there for decades, if not the life of the car.
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  #7  
Old 08-15-2011, 12:48 PM
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Quote:
Originally Posted by benzedrine View Post

I'll take a look at it this afternoon. The wire is mounted on a little tab that looked factory to me. It looks like it has been there for decades, if not the life of the car.
I can absolutely assure you that the wire is shadetree engineering, not Mercedes engineering. The tab is original equipment, but that is not its intended purpose.

Quote:
Originally Posted by benzedrine View Post
I assumed it was there to catch the rod if the rubber part failed.
The part that typically fails is the nylon "ball joint" on the rear side of the component. They turn to powder after 20 or so years and just disappear.

Last edited by tangofox007; 08-15-2011 at 01:08 PM.
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  #8  
Old 08-15-2011, 01:05 PM
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Quote:
Originally Posted by tangofox007 View Post
The part that fails is the nylon "ball joint" on the rear side of the component. They turn to powder after 20 or so years and just disappear.
Yes you definitely need a new throttle bushing.

I've had the rubber part tear apart too. But it looks like his nylon ball is gone.
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Old 08-15-2011, 01:39 PM
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Thanks for the advice! I went ahead and ordered the part. Is replacing it pretty straightforward?
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Old 08-15-2011, 01:48 PM
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Quote:
Originally Posted by benzedrine View Post
Thanks for the advice! I went ahead and ordered the part. Is replacing it pretty straightforward?
One hitch pin. Two screws. Three minutes.
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  #11  
Old 08-15-2011, 02:02 PM
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Great. I was hoping you'd say something like that. Thanks again!

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