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Re: Ultramatic Rebuild
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Home away from home
 
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I'm just about to pull the ultramatic out of my 53 Patrician parts car to rebuild for my 53 Cavalier. They are identical, correct? 🤔
Posted on: 9/14 15:10
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Re: Ultramatic Rebuild
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Home away from home
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Yes and even the Clipper's was identical outside the rear yolk being smaller on the junior model.
Posted on: 9/14 15:14
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Re: Ultramatic Rebuild
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Home away from home
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Thank you! I would hate to go to all the work of pulling it out, only to find out that it had some variation from my Cavalier.
Posted on: 9/14 15:42
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Re: Ultramatic Rebuild
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Forum Ambassador
 
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There were some running changes made in the DD clutch which may or may not be in either unit so you might want to look thru the service articles. Another is a possible difference in the valve body and governor that you might pay particular attention to. An improved timing kit was made available and is detailed in the service counselor article on page 40. I believe it was factory installed in late 53 units and continued into 54 before the gear start arrived. It was also made available for retrofit in earlier Ultras and possibly one of your units or even both might have it. Important thing would be careful and not swap any valve body parts between the two.
Posted on: 9/14 16:29
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Howard
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Re: Ultramatic Rebuild
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Home away from home
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My Cavalier is 2672-10903 (8903 of 10799)
My Patrician parts car is 2652-3034 (1034 of 7456) Would that indicate my Cavalier is more likely to have any upgrades? I wasn't planning on swapping any parts from one to the other. The idea was to rebuild the transmission from the parts car over the winter so I could just swap them out in the spring. I spent the afternoon digging through decades worth of Alberta dirt and oil! Transmission is just about ready to come put of the parts car, but the u-joint is going to need some heat, it's stuck!  
Posted on: 9/15 0:12
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Re: Ultramatic Rebuild
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Webmaster
 
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If I remember doing my 54, once the u-clips are removed and smack with a mallet loosen the up. Then are not pressed in like the once on my '37, we're.
A good penetrator soak make also help.
Posted on: 9/15 6:43
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-BigKev
1954 Packard Clipper Deluxe Touring Sedan -> Registry | Project Blog 1937 Packard 115-C Convertible Coupe -> Registry | Project Blog |
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Re: Ultramatic Rebuild
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Home away from home
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Quote:
I've had the drive shaft off my Cavalier when I rebuilt the front joint and replaced the output shaft seal on my transmission. Those were like you said, a few taps and then they would turn and you could work them out. These ones not so easy! As opposed to my Cavalier, I think my parts car spent much of it's life outside.
Posted on: 9/15 8:39
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Re: Ultramatic Rebuild
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Home away from home
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Quote:
Howard, with regards to the redesigned timing valve it looks like this was to improve transmission performance when shifting from low to high. Considering there is little reason to use low gear I don't think I should be too concerned if my transmission has this update. Does that make sense? I'm going to have peruse the other SC's and see if I can find anything else.  This is supposed to be a winter project, but now I want to jump into it!
Posted on: 9/15 8:55
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Re: Ultramatic Rebuild
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Home away from home
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The service manual mentions marking the flywheel and converter. What is the reason? Are they balanced together or something like that? If I'm swapping transmissions, should I be swapping the flywheels as well?
 
Posted on: 9/15 9:49
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