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trans main shaft roller bearings, how many?


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Posted

I tore apart my 47 Plymouth 3 speed, needed to replace the seal and clean up the rust in the bottom of the case. I only found 9 of the roller bearings in the main shaft connection. They are in great shape, but when I put them back in there is a large gap, seems like there should be a few more in there. Does anyone know how many of the rollers there should be? The book doesn't say anything. If I need a few more, does anyone have a source?

Posted

If you mean the main shaft pilot bearings where it fits into the front input shaft, there appears to be about 15 or 16 roller berings. Your best bet would be to scavenge them from another trans.

Posted

Okay, I hang my head in shame for bothering you guys. I swear I dug around and even ran a magnet through the muck in the bottom of my parts tank and I thought I had them all. But alas after you confirmed my fears, and search of the garage, I tackled the tank again. Magnet could not get them but my sensitive fingers finally located them all. It may be time to clean out the parts washer.

Posted

Look in the yellow pages for a bearing supply. They can sell you new bearing rollers and balls too for that matter. Not expensive. I bought some loose ball bearings 5/8 in diameter and they were only $3 apiece. Small ones like you need go for under a $1 buck. They may be able to get new races if you need them.

Posted

14 roller bearings fit in the end of the 3 speed input shaft!

Posted

Don,

I know the number because I too have been on my knee's looking for those missing rollers! After losing a few during a trans rebuild over the years you learn to have 14 of them on the clean white cloth on the bench ready to install into the input shaft along with the rest of the countershaft rollers!

15 of them suckers are used on the M-5 and M-6 transmissions BTW.

Bob

Posted
Don,

I know the number because I too have been on my knee's looking for those missing rollers! After losing a few during a trans rebuild over the years you learn to have 14 of them on the clean white cloth on the bench ready to install into the input shaft along with the rest of the countershaft rollers!

15 of them suckers are used on the M-5 and M-6 transmissions BTW.

Bob

Some day, if I live long enough, I will find that black hole in my garage (where all those missing parts land) and I will be a millionaireicon14.gif

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