28Q29U Plymouth Forum

General Category => General Discussion => Topic started by: Rusty on March 03, 2018, 04:53:11 PM

Title: Rear axle bearing
Post by: Rusty on March 03, 2018, 04:53:11 PM
I remove the wheel today to fix a flat..  Found that I have 4 loose spokes, gear oil is on the inside of the drum.  It looks like there is grease mixed gear oil.  There looks like a outer seal , grease seal.  Is there a inner oil seal?  Or does the wheel bearing ride in oil?  Where would I look for such seals?  Brake shoes are light coated in a grease/oil goo.  Never a easy simple job!
Title: Re: Rear axle bearing
Post by: Crazydave on March 03, 2018, 07:31:32 PM
I recall just packing the axle bearings with grease and there being a felt inner seal to hold the gear lube back. See pictures below.

These are my local guys that can seemingly find any bearing or seal if it exists. https://www.cutter-sales.com/ Not sure where you are located. 

(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140803_212742.jpg?m=1515893856)
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140805_200407.jpg?m=1515893892)
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140809_143048.jpg?m=1515893922)
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140809_143705.jpg?m=1515893916)
Title: Re: Rear axle bearing
Post by: Rusty on March 03, 2018, 08:38:51 PM
I think the inner felt seal is bad. How hard was it to pull the axle shaft? It looks like my outer seal has been replaced.
Title: Re: Rear axle bearing
Post by: Rusty on March 03, 2018, 08:42:41 PM
I live South Dakota.  I make trips to the twin cities a few times a year.  I will need to pull the seals and take them on my next trip. 
Title: Re: Rear axle bearing
Post by: Rusty on March 03, 2018, 11:35:11 PM
Did you replace the bearings and races?  How hard was it to pull the races?
Title: Re: Rear axle bearing
Post by: Crazydave on March 04, 2018, 11:03:00 AM
Yes, I had to replace the drivers side. When I got the car the outer bearing was toast, literally jacked it up and was able to pull the axle out with one hand. I used a slide hammer to pull the inner race out, outside one was gone. There were a few shims behind it. The seal you are after is called the "axle drive shaft oil washer assembly" Page 3-1 call out 26 group 3-F Part numbers 43049 & 600475 in the Plymouth Master Parts List. I had to have a machine shop press the new bearing on the axle. I pounded the new races in the axles tubes with a piece a wood I cut to fit. (precise I know) Slammed it back together until it felt and looked good.

Old one.
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140805_200947.jpg?m=1515893913)
Shims
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140805_200353.jpg?m=1515893874)
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140805_200347.jpg?m=1515893880)
Bearing Part numbers
(http://www.1948plymouth.info/galley/var/resizes/Crazydave/-Plymouth/20140809_143058.jpg?m=1515893923)
Title: Re: Rear axle bearing
Post by: Carson on March 04, 2018, 08:46:56 PM
the rear axle has an oil seal and a grease seal.the grease seal is available but not the oil seal.  I used a National Seal #204027.this seal is slightly oversize so I had a friend take .021 off the seal and it fit nice. I bought the seal from Motion Industries.  Hope this of some value.  regards Carson
Title: Re: Rear axle bearing
Post by: 29plycoop on March 06, 2018, 12:45:04 AM
Thanks for the replacment seal info. Another trick for the books.
Title: Re: Rear axle bearing
Post by: Rusty on March 07, 2018, 01:15:12 AM
I have a question crazydave, what did you do for the shims?  Those look in bad shape.
Title: Re: Rear axle bearing
Post by: Crazydave on March 09, 2018, 01:51:38 PM
Quote from: Rusty on March 07, 2018, 01:15:12 AM
I have a question crazydave, what did you do for the shims?  Those look in bad shape.

I think I put them back in (didn't try and find replacements) Couldn't imagine how they would make much of a difference, they are extremely thin. And since I had no way to check depth I didn't get too concerned about. Maybe someone knows the proper method.

Sometimes I just stop and think, how would the owner have made the repair back in the 30's? Then assume I'm doing it as well or better  :)