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  #1  
Old January 10th, 2019, 15:44
MickeyS MickeyS is offline
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Speedo gear leaking

231 case is leaking from the bottom of the speedo gear housing. did some searches and it seems people have this issue. some say there are two o rings. Where exactly do the two o rings go? there is one recessed in the housing that i see, and i see on multiple youtube videos, but i don't see two.

anyway, I replaced that oring and reinstalled. It's still leaking. what am i doing wrong? if i were to add RTV, where exactly should I seal?
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  #2  
Old January 10th, 2019, 17:10
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lazyxj lazyxj is offline
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Re: Speedo gear leaking

Having the same problem in the past, after replacing the o-ring, I used RTV silicone sparingly to seal the speedometer sender. It has stayed leak free for years.
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Old January 10th, 2019, 22:44
MickeyS MickeyS is offline
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Re: Speedo gear leaking

It seems to happen to people for some reason. So where exactly did you seal, between the t case lip and the speedo gear housing? Iím confused by people who say there are two orings.
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Old January 11th, 2019, 04:07
md21722 md21722 is offline
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Re: Speedo gear leaking

If you remove the speedo gear (held down with a fork and a 13 mm nut) there is an o-ring on it. Then if you remove the sensor from what you just pulled out, there is a 2nd o-ring. If you go down to NAPA and look at a speedo sensor, it becomes obvious where the 2nd o-ring goes.... The speedo sensor is actually 3 separate parts... the gear, the housing, and the sensor. The 2nd o-ring seals the sensor to the housing. The large o-ring that usually leaks is Mopar 6035709. I prefer using the Mopar part. I have had Crown owns leak shortly after install.
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