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  #1  
Old 06-01-2007, 03:45 PM
henrydupont
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where to find the how to on odo repair 126?? (slipping)

dieselgiant has one but his site is so weird. I can't find the hack that's for sure. anyone have a link??
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  #2  
Old 06-01-2007, 03:50 PM
vstech's Avatar
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just pull out your speedometer, you will have no trouble finding the problem.
John
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  #3  
Old 06-01-2007, 05:01 PM
henrydupont
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Quote:
Originally Posted by vstech View Post
just pull out your speedometer, you will have no trouble finding the problem.
John
ok. I tried that and I don't see what is wrong with the thing
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  #4  
Old 06-01-2007, 05:05 PM
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I'm betting the plastic gears are gone, every single one I've ever seen has had that problem..
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  #5  
Old 06-01-2007, 05:19 PM
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Henry what is the procedure for removing the speedo head....need to pull mine out.
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  #6  
Old 06-01-2007, 05:26 PM
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not hard to do

I've fixed two of them.
The gray pot metal gear is likely spinning on the shaft. The solution is to make that gear grab the shaft again.

Tools needed:
long nose pliers
toothpick or similar sized drill bit
scotch tape
locktite blue

Pull the instrument cluster
remove the center instruments (spedo and odometer)
remove the odometer component.
you'll see metal pin going through the numbers
put the scotch tape over the numbers to keep them aligned and from falling out.
There is a small metal disk on the side oposite the plastic drive gears. Using the long nose pliers, pull this off carefully by pushing the pin through it.
Just as you get the metal pin to out of this disk, follow the pin with the toothpick or drill bit. You don't have to completely remove the pin, just push it out about 1/2"
Now, the pin should stick out past the pot metal gear about 1/2".
Scuff up the pin (shaft) and put a drop of locktite blue on that scuffed up area.
push the pin back into the assembly.
Put the metal disk back on the shaft like it was before.
I spin the odometer using the white plastic gear for about 5 minutes to spread the loctite around.

You're done.

I hope this was helpful..
clint
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  #7  
Old 06-01-2007, 05:28 PM
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Clint hope you are talking about the electronic 126 speedo's. What screws remove the odometer head or otherwise allow it to be removed.
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  #8  
Old 06-01-2007, 05:56 PM
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Quote:
Originally Posted by TX76513 View Post
Clint hope you are talking about the electronic 126 speedo's. What screws remove the odometer head or otherwise allow it to be removed.
I'm pretty sure those are for a 123 odo. The failure I've always seen in the 126 ones is the plastic gears going bad..



you can kinda see which screws here,

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1981 Mercedes-Benz 300SD | Blown engine, rebuilding someday...
1981 Mercedes-Benz 300SD | Rear ended, retired in garage.
2009 Yamaha AR230HO | Das Boot

Excessive speeding? It ain't excessive till I redline!
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  #9  
Old 06-01-2007, 09:05 PM
henrydupont
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ok ok I got it. whilst searching for the problem the actual gear disintegrated in 4 pieces right there. how funny. that must have been engineered like that, no question about it. like no other?
and they all **** up around 265k? just when you really want your product to be off the high end market and into the dark circuit. wow.
anyway, I need to contact odometergears.com
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