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Member
Posts: 19
| I had another rear transmission seal put in my '55 Plymouth, which has leaked pretty much consistently for decades. The transmission shop informed me that they could not fix the leak due to a groove cut by the old seal, and they didn't have a way to fix that. I've seen that there are sleeves to repair such problems, but have no idea where to find the correct sleeve. Any suggestions? I would like to start driving it again, but the parking brake keeps grabbing while driving due to the oil soaking everything. This was first repaired in the late '70s, and the seal has been replaced many times. |
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Expert
Posts: 3034
  
Location: N.W. Fla. | Call Rock Auto, also, maybe..Bernbaum, Roberts Auto Parts. Might be a generic type part like the ones that fit the dampers that fit a lot of things & maybe not... |
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Regular
Posts: 53
| Napa, O'Reilly Auto Parts, and other auto parts stores have what is called a Speedi-sleeve or Redi-sleeve for repairing wear grooves in shafts. Try part number 99156 on the NAPAonline.com website to see what they look like. They are a little pricey, but if it keeps you from having to replace seals it's worth it. |
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Regular
Posts: 85
Location: River Falls, WI | Stevie Exit;
I had a persistant pinion seal leak on a '60 Dart rear, and I was able to position a new seal in a slightly different place in the housing so the wearing surface was not in the groove. When you put the new seal in, just don't drive it all the way 'home'. You will need to look carefully at how much room you have there; you won't want the hub of your drum to contact the seal. Measure carefully and it should work. It worked for me. Did the same with a pitman arm seal, as well.
Paul H |
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Board Moderator & Exner Expert 10K+
Posts: 13050
Location: Southern Sweden - Sturkö island | Try to check industrial lip seals. Sometimes we use double lip seals - the two lips is normally in other position than the cut groove in the shaft. |
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Member
Posts: 19
| Here it is two years later, and I'm finally around to fixing this. I have a couple of questions hopefully some of you can answer.
1. The brake shoes are anchored at the top, but can move around at the bottom. So during normal operation, it looks like the brake shoe would shift and contact the drum. Probably not a problem if there is no oil on the brake shoes, but it looks to me that it would be an unnecessary source of friction. There is a brake support grease shield spring that keeps things centered, but it doesn't take much to move the shoes at the bottom. (See diagram at link)
2. The transmission flange washer and shake proof washer, used to hold the drum on, were missing. Is this just a regular washer and locknut?
3. There is a neoprene seal on the backing plate called the brake support. Can I just add RTV to make this fit tightly again? The support plate moves quite a bit due to the looseness of the seal. Thanks!
http://i959.photobucket.com/albums/ae73/stevie_exit/55plymouthparki... |
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1955 Plymouth Powerflite Rear Seal cut groove
