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  #1  
Old 12-23-2020, 09:43 PM
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Location: Westminster, SC
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W123 accelerator firewall pivot

Iím looking for a 123-300-13-40 Accelerator linkage pivot mount for a 1985 300TD. It bolts to the firewall with two screws and connects the accelerator pedal linkage to the engine accelerator shaft. Appears to be unobtanium these days, even from MB Classic center.

Anyone have a stash or a source?

Many thanks!

-Dan

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  #2  
Old 12-23-2020, 10:08 PM
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Quote:
Originally Posted by 54dan View Post
Iím looking for a 123-300-13-40 Accelerator linkage pivot mount for a 1985 300TD. It bolts to the firewall with two screws and connects the accelerator pedal linkage to the engine accelerator shaft. Appears to be unobtanium these days, even from MB Classic center.

Anyone have a stash or a source?

Many thanks!

-Dan
What is wrong with yours. If it is just the rubber piece there might be a fix for that. If it is the plastic ball falling apart that is a different issue.

Note this part was had to find 4 months ago. Some people managed to get what was left in stock.

I also noticed that some places back at that time had more then one Ad for them and some of there Ads said they were in stock and others ads from the same company said out of stock.

Used on eBay or of course a Junk Yard.
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Last edited by Diesel911; 12-23-2020 at 10:19 PM.
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  #3  
Old 12-23-2020, 10:19 PM
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At least the rubber part is smooshed out and causing the loss of about 1/2 of the throttle. I have not removed to see about the plastic ball on the back, but will shortly.

-Dan
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  #4  
Old 12-23-2020, 10:25 PM
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Quote:
Originally Posted by 54dan View Post
At least the rubber part is smooshed out and causing the loss of about 1/2 of the throttle. I have not removed to see about the plastic ball on the back, but will shortly.

-Dan
You can likely scrape of the old rubber and get a flat piece of rubber and rough up all surfaces to be glued and superglue them together.
I don't know how much heat superglue can take but when I measured the under the hood temp in 80 degree F weather at idle at a so stop the under the hood temp goes up to around 190 degrees F. When you start moving the under the hood temp quickly falls to with in 5 degrees of the outside temperature.
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  #5  
Old 12-24-2020, 01:38 PM
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As kind of a shot in the dark, Iíve ordered a 123-300-23-25-MBZ from pelican parts and a metal ball from eBay.

In the theatre of my mind, the two can go together to make something like the original.

Will update this thread as I progress.

https://www.pelicanparts.com/More_Info/1233002325.htm?pn=123-300-23-25-MBZ&gclid=Cj0KCQiAlZH_BRCgARIsAAZHSBmTn8xN7tFLz39kD7z3PFr3Jrp1kCX29pD10KALhvD0ZpACCJ4TeNEaAvPTEALw_wcB

https://www.ebay.com/itm/NEW-Repair-Kit-W123-Accelerator-Linkage-Pivot-for-A1233001340-A1233001540-used-/303797668513?_trksid=p2349624.m46890.l49292
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  #6  
Old 12-24-2020, 01:47 PM
t walgamuth's Avatar
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I think I have one but not from an 85.
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..I also have a 427 Cobra replica with an aluminum chassis.
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  #7  
Old 12-25-2020, 01:17 AM
Grom
 
Join Date: Mar 2020
Location: San Diego, CA
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Thereís a guy on Facebook thatís taking old cores and replacing the ball with stainless steel and selling them for $150 - if that interests you
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  #8  
Old 12-25-2020, 03:04 AM
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Originally Posted by imgolden View Post
Thereís a guy on Facebook thatís taking old cores and replacing the ball with stainless steel and selling them for $150 - if that interests you
The original ball has a cut back on the front that forms a collar and a flat rear. If the seller is cutting the collar on a stainless steel ball more power to him.

See post 1 for pics

https://www.peachparts.com/shopforum/diesel-discussion/394694-firewall-throttle-linkage-84-300d.html
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  #9  
Old 12-25-2020, 09:29 PM
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mmmmmm Diesel...
 
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When I had my w123, I had to replace the rubberized plastic bushing. The hard plastic was fine.
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91 W124 300D Turbo replaced, Pressure W/G actuator installed. 188K

90 Dodge D250 5.9 Cummins/5 speed. 400K
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  #10  
Old 12-26-2020, 04:29 PM
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Post W123 Accel Pivot Repair

There you go : https://www.pelicanparts.com/More_Info/1233002325.htm?pn=123-300-23-25-MBZ&gclid=Cj0KCQiAlZH_BRCgARIsAAZHSBmTn8xN7tFLz39kD7z3PFr3Jrp1kCX29pD10KALhvD0ZpACCJ4TeNEaAvPTEALw_wcB

https://www.ebay.com/itm/NEW-Repair-Kit-W123-Accelerator-Linkage-Pivot-for-A1233001340-A1233001540-used-/303797668513?_trksid=p2349624.m46890.l49292
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If you're on a budget and only have the bonded rubber part failing, look at the pictures at Pelican Parts, there are two dimples in the metal, jig the whole thing up in a vise (clamp it to both metal parts are aligned, they tend to twist as the rubber ages out) then carefully drill out two through holes using the dimples, when finished tap them with 10 X 1.0 MM threads and use low profile head screws, you can add lock nuts on the back if you wish .

I had a used car come in with this repair and it was fine and dandy, I could feel slight vibrations in my foot so I replaced it with a N.O.S. part .

I've seen two W123's with large corks carefully trimmed to suit, they worked perfectly but I doubt would last long .

I'm quite surprised Uro doesn't make the simple molded plastic ball piece .

(HINT)
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  #11  
Old 12-27-2020, 07:52 PM
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Quote:
Originally Posted by imgolden View Post
Thereís a guy on Facebook thatís taking old cores and replacing the ball with stainless steel and selling them for $150 - if that interests you

do you know what his facebook URL is?
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  #12  
Old 12-27-2020, 10:46 PM
Grom
 
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Location: San Diego, CA
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Quote:
Originally Posted by merc lover View Post
do you know what his facebook URL is?
I can't find his listing, but here's his profile: https://www.facebook.com/hector.correa1/

You can send him a message about it, looks like a good piece.
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  #13  
Old 12-27-2020, 11:28 PM
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Skateboard wheel see post 1.

FSM question, firewall accelerator linkage answer

Something wit PVC Pipe.
WTB: W123 Accelerator Linkage Bushing

"I used a pvc pipe fitting I had in the garage, using the metal bracket outside, ID worked, OD had hex? to hold in center, cut off to fit length, probably cost .69 cents.
All it has to do is center the throttle shaft in the bracket and not bind.
5 years no noticeable wear.?
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Last edited by Diesel911; 12-28-2020 at 10:51 AM.
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  #14  
Old 01-02-2021, 01:10 PM
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Years ago, the rubber split in my 1985 300D. I wondered why flooring it only allowed 30 mph and slow acceleration. As a temp fix, I wired it tight with re-bar tie wire. Today, I would my the thinner stainless wire from Harbor Freight for a purty look. I later replaced with a good one from the junkyard, plus have a bag of a few more. I grab critical "not avail" parts like that when at the junkyard. Other owners might hate me, but at least I saved parts from being scrapped. M-B went to extremes to shield rich owners from the bothers of the road, like a shaky pedal, driveshaft vibrations, or blowing cold air on your face, but most of these impact long-term reliability.

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