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Old 07-03-2016, 06:24 PM   #1
pklarkin
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Default Mrg part date for transmission case?

Hi All,

I'm in the middle of rebuilding the transmission and I can't seem to get the bearing for the main shaft to fit into the housing correctly - it sticks out too far by about 1/16th of an inch so that when I try to mount the bearing retainer the two aren't flush.

The housing I'm using is not original to the car. It doesn't have a groove for the snap ring in the main shaft bearing hole. I'm wondering if I have a housing from pre-Sept'29. If so, do I just skip the snap ring outright? Is there another part I should be using instead? I'm hoping there's a way to date the housing itself to tell if I should be using the snap ring or not. Thanks in advance for your help!
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Old 07-03-2016, 07:56 PM   #2
wrndln
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Default Re: Mrg part date for transmission case?

There 5 styles of transmission cases. There are cases that have a machined bearing stop for the front and rear ball bearings. These were the first cases used in model A's. The later style cases use a snap ring in the machined grooves. If I remember correctly, the bearings do stick out a little bit, but the bearing retainers should fit using the required gaskets. I suppose the bearings you have could be a little too thick. I saw that on a rearend I was helping rebuild a few months ago. The bearings are the same for all the cases.
Rusty Nelson
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Old 07-03-2016, 08:10 PM   #3
Tom Wesenberg
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Default Re: Mrg part date for transmission case?

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Also watch for the two different size oil slingers that fit against the insides of the two case bearings. These differences are described in the SERVICE BULLETINS.
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