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Old 08-14-2016, 08:24 AM   #1
kendall
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Default dana41 rear pinion seal

hello fellas, I have a dana 41 that needs a new pinion seal, mac's has one but it doesn't look right. here is a picture of my seal and of mac's. what do you think? should I order it?




https://www.fordbarn.com/forum/attach...1&d=1471180930

https://www.fordbarn.com/forum/attach...1&d=1471180930
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File Type: jpg 64-19869.jpg (65.1 KB, 8 views)
File Type: jpg 100_3231.jpg (58.3 KB, 10 views)
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Old 08-14-2016, 08:37 AM   #2
19Fordy
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Default Re: dana41 rear pinion seal

You didn't say what type of vehicle but check out the pinion seals here.
https://www.google.com/search?q=dana...hrome&ie=UTF-8
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Old 08-14-2016, 08:39 AM   #3
kendall
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Default Re: dana41 rear pinion seal

its a 1949 F1 truck
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Old 08-14-2016, 08:47 AM   #4
19Fordy
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Default Re: dana41 rear pinion seal

Looks like it's the same one used in 49-51 Mercury.
http://cgfordparts.com/ufolder/cgcat...&searchnumber=

How about this.
http://www.oreillyauto.com/site/c/se...=F1&vi=1486988

Last edited by 19Fordy; 08-14-2016 at 08:57 AM.
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Old 08-14-2016, 09:05 AM   #5
kendall
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Default Re: dana41 rear pinion seal

here is some pics with the seal cleaned up

somhttps://www.fordbarn.com/forum/attachment.php?attachmentid=281350&stc=1&d=1471183 500e.

https://www.fordbarn.com/forum/attach...2&stc=1&d=1471

https://www.fordbarn.com/forum/attach...1&d=1471183500
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File Type: jpg 100_3235.jpg (60.2 KB, 1 views)
File Type: jpg 100_3234.jpg (65.2 KB, 5 views)
File Type: jpg 100_3233.jpg (70.6 KB, 4 views)
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Old 08-14-2016, 09:07 AM   #6
kendall
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Default Re: dana41 rear pinion seal

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the one from o'reilly looks close.
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Old 08-14-2016, 09:10 AM   #7
kendall
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Default Re: dana41 rear pinion seal

let me get some measurements, be right back.
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Old 08-14-2016, 09:18 AM   #8
kendall
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Default Re: dana41 rear pinion seal

looks like about 3.12

https://www.fordbarn.com/forum/attach...&d=14711842325 O.D
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Old 08-14-2016, 09:21 AM   #9
19Fordy
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Default Re: dana41 rear pinion seal

I would say the correct seal is #5778V from O'Reilly.
Here's some complete measurements. Buy this caliper and you will be "good to go".
http://www.ebay.com/itm/Digital-Elec...gAAOSwyLlXoApY

http://www.oreillyauto.com/site/c/de...rd=pinion+seal

Last edited by 19Fordy; 08-14-2016 at 09:26 AM.
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Old 08-14-2016, 09:27 AM   #10
rotorwrench
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Default Re: dana41 rear pinion seal

There were 2 different types of seals used in the Dana 41 & 44. You can convert to the later seal but you have to have the right combination of parts on the pinion input. I still see the NOS Chicago Rawhide seals now and then on flea-pay. These were leather so they can be rejuvenated if they are in fact 60 year old parts.
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Old 08-14-2016, 09:41 AM   #11
kendall
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Default Re: dana41 rear pinion seal

thanks guys, I have a caliber but I don't like the idea of not having the replacement seal on hand before I destroy the old one getting it out......so I'm just getting my ducks in a row. from what I can tell the o'reilly seal looks pretty close....I will use the caliber and eyeball some diameters with the old seal in place to get a better idea. I marked everything with a punch so I will try to get the preload on the bearings back to where it was...I hope
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