Speedometer cable leaking - Page 2 - JeepForum.com
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post #16 of 22 Old 07-16-2013, 03:10 PM
TomI
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1978 CJ7 
 
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On a serious note, although I've never seen it happen, I can see how a seal could be dead in the auto transmission (If that's what you have) and it could be pumping fluid up the cable and out behind the speeder meter. I'll probably get shut down on this, and maybe rightfully so. I normally work with manual transmissions. Not much experience with autos other than getting rid of them.


Tom I.
'78 CJ7 (A 360 V8 powered mixed bag of parts)
'80 CJ7 (98% original and gonna stay that way)
'12 CTD 3500 Dodge (Tow rig and daily driver)
'05 Western Star/Cottrell Auto hauler (Big tow rig and means of paying for the Jeep habit)
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post #17 of 22 Old 07-16-2013, 03:26 PM
Rproject
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I just happen to be on the phone with my ASE Master Mechanic buddy on a separate issue and mentioned this thread. His response: "oh yeah, I've seen that before. It's the seal at the speedometer cable." There's an inner and an outer seal and when you pulled the speedometer to do the SYE you likely scored one of the seals or one of them didn't make it back in.

1996 White ZJ
1987 Maroon YJ (sideways build)
1996 Forest Green XJ

The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/
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post #18 of 22 Old 07-16-2013, 03:28 PM Thread Starter
GootsYJ1990
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It has an ax-5 manual transmissions, but the speedometer cable connects to the cone on the transfer case. There is also a slight leak there too.

"The only easy day is yesterday."
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post #19 of 22 Old 07-16-2013, 03:33 PM
Rproject
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Yup. The cone - AKA tail housing - is where the speedo gear connects. There is an o-ring on the speedo gear itself as well as one inside the assembly where the speedo gear is inserted. My buddy said that the inner seal is likely either scored or missing. The fluid will get sucked up the cable like a straw because the cable is always spinning, anytime the vehicle is moving. The o-rings where the speedo gear connects to the t-case is where you need to be looking.

1996 White ZJ
1987 Maroon YJ (sideways build)
1996 Forest Green XJ

The "sideways" build thread: http://www.jeepforum.com/forum/f22/r...hread-2164793/
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post #20 of 22 Old 07-16-2013, 03:34 PM Thread Starter
GootsYJ1990
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Quote:
Originally Posted by Rproject
I just happen to be on the phone with my ASE Master Mechanic buddy on a separate issue and mentioned this thread. His response: "oh yeah, I've seen that before. It's the seal at the speedometer cable." There's an inner and an outer seal and when you pulled the speedometer to do the SYE you likely scored one of the seals or one of them didn't make it back in.
This sounds like what it is. I will look into finding that seal, but i will probably end up getting a new speedometer cable because I doubt they sell the seal by itself. It wouldn't hurt to look for one though. Thanks

"The only easy day is yesterday."
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post #21 of 22 Old 07-16-2013, 03:37 PM Thread Starter
GootsYJ1990
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Quote:
Originally Posted by Rproject
Yup. The cone - AKA tail housing - is where the speedo gear connects. There is an o-ring on the speedo gear itself as well as one inside the assembly where the speedo gear is inserted. My buddy said that the inner seal is likely either scored or missing. The fluid will get sucked up the cable like a straw because the cable is always spinning, anytime the vehicle is moving. The o-rings where the speedo gear connects to the t-case is where you need to be looking.
Ok thanks I have an O ring kit ill replace it and look at the other seal to see if it's missing or just damaged.

"The only easy day is yesterday."
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post #22 of 22 Old 07-16-2013, 07:15 PM
Old4X
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It has been a while since I had a cable adapter out of the tailshaft, but IIRC, there are 2 O-rings. One on the clockable insert and one on the gear assembly itself. When you take it back apart it should be obvious.

On the plus side, now your cable is fully lubed.

418 miles on 19 gallons of gas. Can't beat the BBD !
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