12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

Speedometer Quit

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  #1  
Old 03-19-2008, 09:47 PM
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Default Speedometer Quit

ok guys had the clutch replaced and now the speedometer dont work, plug is conected and it works, i pulled the sensor from the t-case and spun the gear buy hand and the sppedometer works. stick it back in the t-case and it doesnt work, i stick my finger in the t-case and the gears feel fine. cant figure it out
 
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Old 03-19-2008, 09:54 PM
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if it is anything like my auto which it should be, the gear is held in with a forked piece of metal that pushes it in the hole when it is bolted up with one bolt. if you look there are 6 or 8 (i believe) places that the fork to be able to hold the speedometer gear in position. what that does is it allows for the gear to be moved farther and closer away from the gear in the tranny if you change rearend gears and change the speedo gear to recalibrate it (each speedo gear is different in diameter so there have to be some adjustability). the gear is offset from the center on that plug in so twisting it one way makes it get closer and twisting it the other way makes it get farther away from internal gear. BEWARE if you make the gears mesh too hard they will eat each other up and will leave a bunch of plastic bits in the tranny to be cleaned out. i hopes this helps. if need be tomorrow i can crawl under my truck and take pics to show what i'm talking about.
 
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Old 03-19-2008, 11:11 PM
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i know exactly what you is talking about i will try turning that hole plug to see if i can get it to work i just remember which angle it went at
 
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Old 03-20-2008, 10:39 AM
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alright. please post back up when you try that and let us know how it went.
 
  #5  
Old 03-20-2008, 05:07 PM
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got it working i guess there is a sweet spot for that the last position i tried was the right one thanks benjamin, any any luck on that ram3500 emblem yet
 
  #6  
Old 03-22-2008, 02:45 AM
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naw looked tonight and couldn't find the other one..... it looks like a tornado hit the shop only on the inside. there's 5 4-wheelers, 1 3 wheeler, 1 motorcycle that's getting dropped and raked, one minibike-deathtrap, 3 motors 2 trannys, sandblaster, oven, bandsaw, and that's all in 1 bay (it's the only bay but that is the main work area.) gotta get it cleaned up SOON. i'll let u know if i find it though
 
  #7  
Old 03-22-2008, 10:22 AM
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thanks for the help and dont worrie about that emblem i just ordered one off ebay this morning, tired of looking at one side of the truck ram3500 and the other side of the truck ram2500, i didnt know that the cummins part came off so i stuck the one you sent me on my tall gate
 
  #8  
Old 03-22-2008, 10:24 AM
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this is what it looks like, i like it
 
Attached Thumbnails Speedometer Quit-cummins.jpg  
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