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  #1  
Old 10-15-2007, 12:15 PM
sully627
 
Join Date: Oct 2007
Location: pittsburgh,pa
Posts: 3
560sl odometer not registering speedo works ok

driving this car and the speedo works fine however the odometer just quit registering,looked into the details and seen that there is a vehicle speed sensor located on the back of the speedo head, could this be the problem? i thought i would just replace the whole speedo head assembly use if i could find one. also the fuel gage only registers 1/2 tank when filling up also bounces to empty some times when driving. this is the first mercedes i've worked on so it's all pretty new to me, thanx for any help i can get, henry
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  #2  
Old 10-15-2007, 12:25 PM
david s poole
 
Join Date: Mar 2005
Location: dallas
Posts: 1,822
the vdo speedo has plastic gears and the plastic reverts to a very soft state and the gears chew themselves up.try speedometergears.com they can sell you the parts or fix it for you.
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  #3  
Old 10-15-2007, 12:30 PM
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Join Date: Sep 2006
Location: New Orleans LA
Posts: 93
speedo

IF you or someone else reset the trip od while moving you probably broke the plastic gears you can get a set for about 75.00 do a search on 126 speedo repair i can't find the link for the place that sell the gear set
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  #4  
Old 10-15-2007, 03:24 PM
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Join Date: Apr 2005
Location: Northern Louisiana
Posts: 448
Ooh, OOh! this happened to me this weekend; I thought it had something to do with trying the cruise control. I made about a 100 mile trip in the '86 420SEL; on the return I noticed the odo was not registering. I made a stop; when I resumed my return trip later, the odo worked again. Ghosts. I had tried the CC on the return trip to see if I could get it to work and it did, worked great all the way. Hummmm... randy
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  #5  
Old 10-15-2007, 08:28 PM
crhenkel's Avatar
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Join Date: Mar 2001
Location: Decatur, Illinois, USA
Posts: 616
odometer gears stripped or broken. Buy new gears, pull instrument cluster and replace. very common to happen, gears get soft and break. Not a hard fix.
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  #6  
Old 10-16-2007, 12:10 PM
sully627
 
Join Date: Oct 2007
Location: pittsburgh,pa
Posts: 3
odometer inop

i want to thank you all for your help i will look into replacing the odometer gears and see if that works
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  #7  
Old 10-16-2007, 06:23 PM
Bob's your uncle
 
Join Date: Aug 2007
Location: Charlotte, NC
Posts: 76
Look here: http://dieselgiant.com/repairyourodometer.htm
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  #8  
Old 06-05-2013, 03:32 AM
Doktor Bert's Avatar
Das Sturm Uberdoktor
 
Join Date: Jan 2005
Location: Palm Springs, CA.
Posts: 2,670
Hmmmmm....

All my plastic gears are good on my R107 unit and if I turn the pot metal gear by hand, both the Odo and Trip Odo advance, WTF????
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