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  #1  
Old 06-30-2015, 06:01 PM
flainn's Avatar
Always smells like diesel
 
Join Date: May 2012
Location: Los Lunas, NM
Posts: 101
W140 (300SD) odometers not working

Hi guys,

The odometers (mileage and trip) on my 93 300SD haven't worked since I got the car. I bought a set of replacement gears on Amazon and followed these instructions to replace them, but it unfortunately didn't correct the issue. They still don't do anything.

I'm wondering if there's a way to test the little motor that runs the odometers. Can you just put 12v to it and see if things start turning?

The odometer assembly:



And the motor and one side of the gears:

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'93 300SD
Past: '82 300SD, '83 240D, '83 300SD, '96 E300D
also a bunch of diesel Fords and one Dodge
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  #2  
Old 07-01-2015, 12:02 PM
formerly newtodiesel
 
Join Date: Feb 2014
Location: Jacksonville, Florida
Posts: 189
Usually its the rod that goes thru the gears that
Gets worn smooth. Follow one of the pictorials
To scuff the rod that the gears ride on.
Not sure about 12v, Im not that capable
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  #3  
Old 07-05-2015, 12:26 PM
oldsinner111's Avatar
love all animals
 
Join Date: Nov 2008
Location: bristol,tn
Posts: 5,447
I had the small pinon gear spining on its shaft,I super glue gel it,10 years ago
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usaf vet,dumb ass, Jerry Springer,and Maury 2020, no more unwed mothers
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  #4  
Old 08-10-2015, 05:57 AM
optimusprime's Avatar
Trevor Hadlington
 
Join Date: May 2014
Location: Worcestershire in England
Posts: 1,206
oldsiners so did i .Replace a few in the past but never done the 12 volt type more involved thats not in the view to the eye. I think you need to get it repaired or replace with another one with the same number as your head unit ,ie the number on the speedo head.must be the same ..
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