Does it look like  a large-ish bolt with  a locking hex nut on the end of
it, parallel to the ground?

On Sun, Aug 9, 2009 at 7:30 AM, Rolf Martin-Hoster <r...@winmutt.com> wrote:

> I adjust mine with the engine running.
>
> The rack dampener is just a bandaid fix, uneven idle is a sign that it is
> time to have the IP on the bench. Of course that costs money and anyone can
> adjust a rack dampener :D
>
> -Rolf
>
>
> harry watkins wrote:
>
>> From Mac, Aug, 2008
>>>
>>
>> The rack damper bolt is only part of the equation with respect to getting
>> the idle 'right', or as right as it can be.
>>
>> First, the adjustment has to be done with the engine as hot as you can get
>> it, so if you are able to work in a place near a stretch of highway all
>> the
>> better (mine have always run roughest right after a highway drive). This
>> means you have about 10 minutes in which to work, before the engine cools
>> off too much at idle.
>>
>> Second, as these engines age (by which I mean at higher mileages) they
>> seem
>> to each have their own 'sweet spot'. Some run very well at low idle RPMs.
>> Three out of the four I have had did not. You have to adjust the idle
>> speed
>> as well as the rack damper - you may not be able to get a smooth idle at
>> your current idle speed point.
>>
>> The third point is the injectors, but you have seen to that (I can't find
>> your original post now, but I am assuming you had them professionally
>> cleaned).
>>
>> Good luck
>>
>> Mac
>>
>>
>> ----- Original Message ----- From: "andrew strasfogel" <
>> astrasfo...@gmail.com>
>> To: "Mercedes Discussion List" <mercedes@okiebenz.com>
>> Sent: Saturday, August 08, 2009 1:52 PM
>> Subject: [MBZ] Adjusting the W123 injection pump dampener screw
>>
>>
>>  The use to be a link to an explanation on how to adjust the injection
>>> pump
>>> dampener on a W123 turbodiesel to cure 'the shakes" at idle.  Does anyone
>>> have a live link to this article?
>>> Andrew
>>> W123 300cd and 300 td (2)
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>>
>>
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>
>
> _______________________________________
> http://www.okiebenz.com
> For new and used parts go to www.okiebenz.com
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