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134 rear main seal; Leak
Topic Started: Aug 27 2013, 06:26 PM (934 Views)
wellcraft17
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Parked my 55 3B Fri nite, came out Sat and had the much discussed and dreaded 4-5" spot of oil under the bellhousing. First time that has happened as it has been relatively leak free since I got it back on the road several mo. ago. Unless it gets better I guess I'll be dropping the pan and replacing the seal. This is an unmolested motor and had never been apart until I reringed, new valves and rod bearings it several months ago so I'm guessing it has the original seal and I'm looking for some advice as to where to get a seal from and which one to put back in. I've read alot of write ups on this issue but was looking for the lastest advice from the group here, thanks for any input.
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MoonRaker
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I would recommend getting a copy of AERA TB-2025 . The wrong seal in an F-134 rear main seal replacement can get real expensive. Oil leaks, not so bad, locked up crankshaft, bad news. Good luck.
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wellcraft17
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Thanks for the information, read through a lot of the information on the net and was thinking some one on here must have had sucess in replacing their main seal and what process did they go throuh and what parts worked best.
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jyotin
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I always use Fel-Pro for a rear main seal. I'm not in love with their F head rebuild gasket kit in general, but I always use the Fel-Pro for the rear main.

It's just my luck that something good is going to happen to me today.
54 - 3B - down on the farm
67 - cj6 - former state of Alabama vehicle
?? - cj5 T98a - made from spare parts - Ford tractor blue
?? - cj5 T98a - made from spare parts - Jeep green
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spm1us
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From what I've been able to learn, there is a seal on ebay that the seller, Matt Fox aka "WCFR4", swears is the correct part for the F-134 - see ebay #290833361849. There is also one of the MV/Jeep parts dealers that claims to have the correct seal made exclusively for him. I can't recall if it's Ron Fitzpatrick, George Bizal or Peter DeBella - I may have to research the suvbject on the G503 site again. There have been a lot of problems evidently with the reproductions as of late.
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oldtime
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About two years ago I bought a new Felpro rear main seal and it was undersized.
I also bought one od Matt Fox's seals and it was also too tight.
I suggest that you locate a Victor Reintz JV687.

See: http://z4.invisionfree.com/CJ3B_Bulletin_Board/ar/t3985.htm
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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wellcraft17
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Thanks Oldtime, what a cluster, there doesn't seem to be one definitive answer for a realative simple issue. I have worked on a ton of old motors mostly in the 50s era and they pretty much all had the rope seal and I never had a problem with them.
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oldtime
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You can certainly install a rope type seal if you want.

Remember to inspect...
The condition of the seal journal may be in question.

I think I have a couple pairs of the neoprene type seals.
I'll check tonight.
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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wellcraft17
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Oldtime, If you have one please let me know.
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oldtime
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I know I have a couple extra of the neoprene types but forgot to check.

I'll write myself a note.
HEY ME ... CHECK ON REAR MAIN SEALS !
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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oldtime
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Rear main seals are listed in the CJ-3B related Buy / Sell Posts
Currently building my final F-134 powered 3B .
Rock Crawler using factory parts from the Willys Motors era (1953-1963)

http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new
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