1947 chevy 1.5 ton rear hub nut torque

[Berndtc426]

I just replaced my wheel cylinders on the rear of my 47 chevy loadmaster 1.5 ton pickup. When I took off the hub nuts they seemed pretty tight. I repacked the bearings while I was in there and noticed that they are the barrel type roller bearings. For what I can find via the Internet they don't like any preload. I'm looking for a torque spec for the hub nut. All I can find is tighten the nut until it is tight and back off 45 degrees. Not sure what "tight" actually means. Also if someone can help me identify what rear axle was in the 47 Chevy 1.5 ton pickups that would be great. Note: it's a 47 1/2 pickup. The same body style as the 48-53 trucks.

[whitedog76]

I read the service manual too. I'm guessing tight means until all the play is taken up, but not too tight that it can't spin freely.

The 45 degree thing? I guess back it off 1/8th of a turn?

Chris

[Berndtc426]

Originally Posted by whitedog76

I read the service manual too. I'm guessing tight means until all the play is taken up, but not too tight that it can't spin freely.

The 45 degree thing? I guess back it off 1/8th of a turn?

Chris

Okay well that's a good starting place. Thanks for the help.

[dwcsr]

Your just supposed to spin the wheel while tightening the bearing nut till you can't turn more with light pressure of about 25 ft lbs. then back it off the 1/8 turn. spinning the wheel is an important part of the adjustment.

[Berndtc426]

Originally Posted by dwcsr

Your just supposed to spin the wheel while tightening the bearing nut till you can't turn more with light pressure of about 25 ft lbs. then back it off the 1/8 turn. spinning the wheel is an important part of the adjustment.

So your interpretation of "tight" roughly translates to approximately 25 foot lbs while turning the wheel? I feel that if I have a torque spec to work off of I can go from there.

[_Ogre]

and then back off a bit.
you want to seat the bearings and have no free play, then back it off
your better off a little loose, than you are too tight

[OrrieG]

I really is a "feel by hand" deal because every bearing and race are different. Once you get into it you will be able to feel if the bearing is getting to tight and binding up or too loose and getting wobble or free play in the hub or axle. Make sure you get good rotation and do not over lubricate. I go back and check after a few miles to make sure they have not loosened up. Reminded me I need to check the front wheel bearing on my Chevelle...

[whitedog76]

Timkens instructions

https://www.youtube.com/watch?v=0RqlrnoiqnY

[Berndtc426]

Originally Posted by OrrieG

I really is a "feel by hand" deal because every bearing and race are different. Once you get into it you will be able to feel if the bearing is getting to tight and binding up or too loose and getting wobble or free play in the hub or axle. Make sure you get good rotation and do not over lubricate. I go back and check after a few miles to make sure they have not loosened up. Reminded me I need to check the front wheel bearing on my Chevelle...

I'm going to give it a shot this weekend. I feel I've got enough info from all the help on this site to get it done correctly.

[Berndtc426]

Originally Posted by whitedog76

Timkens instructions

https://www.youtube.com/watch?v=0RqlrnoiqnY

I watched the video and the only consideration is that my bearings are the barrel type roller bearing, not a tapered roller bearing. On mine each roller looks like a wine barrel. Wider in the middle and tapered at both ended. Not sue if that makes a difference in adjusting.