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O/T Wheel bearing torque

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37 chief

04-11-2007 19:32:00

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I am doing a break job on my old chevy 1 1/2 ton truck. On the front axle nut if I align the cotter pin on one slot of the nut the bearing is just a little loose, on the other slot the nut is just a little tight. Which is beter loose or tight. Stan

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Walt Davies

04-12-2007 09:17:54

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Well that's as clear as MUDD, you know what I would do is look it up in a manual an see what they say. The advice you got here is from to tight to to loose and somewhere in between.
Walt

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Janicholson

04-12-2007 05:56:05

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Tapered roller bearings need preload. in this app. very little is correct. One castle tight is better than one loose. After a mile of driving, check it again, it will be loose. adjust to just not loose.
JimN

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Allan In NE

04-12-2007 06:32:05

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Re: O/T Wheel bearing torque in reply to Janicholson, 04-12-2007 05:56:05

Gee Whiz Jim,

Even if "Dad said to do it this way"? :>)

However, think that old 1954 farm truck uses a couple of opposing roller bearings up front, doesn't it? They gotta be loosened a notch.

My pee-brain memory says that the tapered rollers didn't start coming in until around the early 60s?

Pretty darned sure it had king pins tho. :>)

Allan

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Buzzman72

04-12-2007 08:32:52

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Re: O/T Tapered Roller bearing usage in reply to Allan In NE, 04-12-2007 06:32:05

Allan, my '51 International L-110 has tapered roller bearings on the front spindles...as did the '46 International K-2L pickup I owned back in the early 1970's. In fact, IH used tapered roller bearings on the front spindles of K-1/K-2/K-3 trucks as early as 1941, according to my MT-52D parts book.

...Oh...

...Maybe you were talking about Chevy, and their "bicycle bearings" they held onto for so long. But "real" trucks went to tapered bearings at least by the early 1940's...and I'd assume by 1939 at IH, when they were already using them on the front spindles of H and M Farmalls.

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Wild Bill

04-11-2007 20:54:15

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Tighten it up until all of the play is gone, then back off enough to get the pin in. It is a sweet spot where there is no play, and no pre-load but you can find it pretty easy by doing it that way

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george md

04-11-2007 20:22:25

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Stan , Bearing manufacturers installation sheet says -- torque to 50 ft lbs , then back nut off 1/6 of a turn.

george

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msb

04-11-2007 20:19:54

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Deere factory service department , used to say at least,a bit tighter than too loose. Take the play out of the bearing. They said that a little peening of the race is what you want. I have a hard time doing that even today.

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Bob

04-11-2007 20:04:54

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Short answer... Following instuctions to set up wheel bearings on a typical older truck, you will end up with a TINY amount of "play", but NEVER pre-load.

Generally, wheel bearings do NOT get "pre-loaded" like pinion or differential bearings.

A shop manual will usually give a certain torque and then what fraction of a turn to "back them off".

When you are done, you will have the tiniest perceptible amount of "play" in the bearings, NOT pre-load

The play may be so slight you don't even feel it, but you can hear it as the grease in the bearings makes little noises as you wiggle the wheel from side to side and the grease "shears" between the bearing surfaces.

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dds-inc

04-11-2007 19:37:17

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

if its not so tight, then put it on tight. bound to loosen up soon.

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Allan In NE

04-11-2007 19:36:57

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

What year is the truck, Stan?

Ball bearings or tapered roller bearings?

Allan

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37 chief

04-11-2007 20:11:26

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Re: O/T Wheel bearing torque in reply to Allan In NE, 04-11-2007 19:36:57

This is a 1954 with tapered roller. I know chevy always liked the ball bearings for some reason. Stan

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Allan In NE

04-12-2007 04:37:02

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 20:11:26

I'll bet that is one sweet old truck!

Needs to be backed off to the next notch on that one.

Allan

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37 chief

04-12-2007 07:30:47

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Re: O/T Wheel bearing torque in reply to Allan In NE, 04-12-2007 04:37:02

My Dad bought the truck new in 54. He didn't wear it out ,looks like I may not eather. It turned 100,000 hard miles a few years back. Dad and I hauled a lot of oat hay with that truck. I use it to haul my AC Model M crawler when I do discing. Looks like loose is better on the bearing. Thanks Stan

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omahagreg

04-11-2007 19:36:41

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Re: O/T Wheel bearing torque in reply to 37 chief, 04-11-2007 19:32:00

Dad always tells me tighten it until it won't turn, then loosen it ONLY enough to put the pin in. Greg

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