Rack Damper Bolt ID (Pic) - Page 2 - PeachParts Mercedes-Benz Forum

Diesel911 · #16 06-14-2010, 10:09 PM

Quote:

Originally Posted by TomJ

Well..., really sorry, but when something is COMMONLY called a "rack damper bolt" because it..., let's see, by your own definition DAMPENS THE RACK!! Then I'll continue to call it a rack damper, even if it's German designation (we all know how accurate their parts designations are!) is a Governor Idle Adjust Pin.

Furthermore, by your own def, it does NOTHING to effect idle so again, we see how accurate THEIR naming is ("Idle Adjust Pin").

Also, since it does absolutely nothing for idle (as you claim), I will run right out this very day and get my ears checked as every time I turned it in I notice (imagined of course) that the idle get's rougher and it lopes, smooths out when it's out far enough that it just touches the rack (sorry, there's that abominable word again).

So, it's just my imagination that it smooths the idle and that it dampens the rack (hence "rack damper"). Thanks for clarifying.

Yes that bolt has at least 2 different names on internet part places and on the Fourms the name gets bent a little.
I dislike the term "Hard Lines" that is used on this Forum to indicate the Steel Fuel Injection Tubing but that is what you guys use and so that is what I use.

I also agree that the Idle Adjustment Screw is on the Throttle Lever side of the Governor and that the Bolt/Pin is a different part.

Diesel911 · #17 06-14-2010, 10:13 PM

What I had to do to get rid of the my vibration/shaking:

Raise the Idle speed within the normal range (this helped some as it was around 700rpm)

I bought a new Rack Damper Bolt but it did not help much.

Rebuilt my Injectors with $16 each brand X Spray Nozzles (This took away most of the shaking)

Doing a Valve Adjustment (took away some more shaking)

Changed Motor and Transmission mounts (took away some more vibration)

Found that I had a small air leak that showed up when the Engine was hot due to hard fuel inlet lines that did not seal even with the clamps tight.

Finally was able to use the Rack Damper Bolt to tune out a little more shake. (I believe that, that bolt was made to reduce the shake on a new engine; not to compensate for a bunch of worn and out of spec parts).

jkubica · #18 06-15-2010, 12:57 PM

Quote:

Originally Posted by Dcraig

My parts shop online calls it a "injection pump idle adjuster screw"

Hi
FWIW - ******** AZ calls it "adjustment bolt at rear of injector pump"
Joseph