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PostPosted: Tue Jul 02, 2019 9:20 pm 
1 BBL (New)

Joined: Mon Jul 01, 2019 9:54 pm
Posts: 1
Car Model*: 1965 Plymouth Valiant Signet convertible
Dried up output seal and resulting fluid leak led me to my latest adventure, replacing the output shaft seal on my 1965 Valiant's a904. This seal (TF6 CT6392 12925A or # 12925A), didn't last long and I thought I'd give this seal (National 472466 Oil Seal) a try. Cheap and easy solution is what I strive for. Trunnion boot was ripped and so I thought this was a good opportunity to get that fixed up as well. I can't speak for anyone else's experiences, but all this talk I've run into about needing a press to disassemble the Trunnion joint seems silly. I found that it has a bearing surface and simply pushed out with a small vice. Removed the pin and replaced the old cracked boot with a new style CV boot, it needed modification but ended up working perfectly. Simply trimmed it with a razor blade. (All Balls 19-5008 Black 17mm x 60mm x 81mm Long CV Boot Kit) ... hDbYAX241F
Total spent: $18.28

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PostPosted: Wed Jul 03, 2019 3:54 am 
SL6 Racer & Moderator
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Joined: Sat Oct 19, 2002 12:06 pm
Posts: 7318
Location: Silver Springs, Fl.
Car Model*:
Thanks. I'm going to try this on my 64 Valiant 3 speed stick. I usually convert to a "normal" U-joint, but don't have the funds right now. Don't like to use NOS boots, as they are so old the rubber doesn't last.

65 Valiant 100 2dr post 170 turbo
66 Valiant Signet 225 nitrous
64 Valiant Signet
64 Valiant 4dr 170

PostPosted: Wed Jul 03, 2019 8:05 am 
Turbo Slant 6
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Joined: Fri Dec 30, 2005 2:49 pm
Posts: 886
Location: Houston, TX
Car Model*:
Glad to see there's another good manufacturer P/N for that '65 output seal (National 472466). I used an SKF 14858 when I did the rear seal in my '65 A904.

Somehow I ended up owning three 1964 slant six A-bodies. I race one of them.
Escape Velocity Racing

PostPosted: Sat Jul 06, 2019 2:43 pm 
2 BBL ''SuperSix''

Joined: Wed May 23, 2018 1:28 pm
Posts: 13
Location: RPV, CA
Car Model*: Dodge Dart Convertible 1964
Thanks for the trunnion boot tip. Ordered one up, hope it fits my 64 270, looks like it will. I got a "stock" one a while ago and it disintegrated very quickly.

Cheers, Bill.
Smoke em of you got em.

PostPosted: Fri Dec 06, 2019 11:34 pm 
3 Deuce Webber

Joined: Tue Apr 05, 2011 11:34 am
Posts: 90
Car Model*:
I can vouch for this. As a result of reading this thread, I just installed a National 472466 seal in my 65 Valiant and it fit perfectly and sealed it tight. No more leaking from the output shaft, ending literally years of puddles under my car.

In order to replace the seal, I had to make a tool to hold the flange in place while I wrenched that huge serrated nut and washer off with a large cheater bar.

The seal I removed was the stock, factory seal. At the tender age of 55, it is no wonder why it was leaking uncontrollably. As you can see, the replacement is a little thinner than the stock part, but it works just fine. The tool made it possible to remove the flange without the danger of damaging the park mechanism. Big thanks to 225bigblock for finding this part.

I have also purchased one of the boots discussed in this thread, but I haven't had a chance to actually get down and dirty replacing the crusty remains of my trunnion boot yet. I will report back when I do, but I fully expect that to be a success as well.

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1961, 1962, 1963 and 1965 Valiant 200. The `65 is a `vert.
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