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4 speed mainshaft bearing

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oldbob
Posts: 171
Joined: Tue Feb 06, 2007 11:48 am
Bikes: 1948 UL
Location: melba idaho

4 speed mainshaft bearing

#1

Post by oldbob » Mon Jun 02, 2008 12:28 am

A few months back as I was putting my rebuilt engine back in the frame I found that my transmission mainshaft bearing felt bad. I replaced the bearing with a USA made bearing from a bearing supply store. It only had the shield on one side, I put the unshield side faceing the gears. I know that most car and truck manual tranmissions use unshielded bearings close to the gears. Now I am wondering if it could cause a problem later on . Would I be better off putting the aftermarket made in China bearing with two shields back in.


Thanks guys

Robert



Panacea
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#2

Post by Panacea » Mon Jun 02, 2008 1:39 am

Oldbob, are we talkin' 65 up? Mike

oldbob
Posts: 171
Joined: Tue Feb 06, 2007 11:48 am
Bikes: 1948 UL
Location: melba idaho

#3

Post by oldbob » Mon Jun 02, 2008 2:22 am

it is a revteck 4 speed . I think is the same as 36 to 65


Robert

rrhawg
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#4

Post by rrhawg » Fri Jun 06, 2008 6:09 pm

I take it your talking about the bearing on the kicker side of the main shaft. This bearing is fine without the shields. don't change it.
Rich

Guest

#5

Post by Guest » Wed Jun 11, 2008 5:12 am

i rebuilt my tranny about six months ago and ran into the same thing running a 57 transmission. the guy that i get most of my advise from sold it to me and when i asked him about it he asured me that i was fine with just the one shield. i have 1k miles on it now and it seems to be trouble free so far.

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