turtlevette

Have we seen spun races? Normally the races grenade because they fracture due to an overly tight press fit.

Mike Ward

I tot I taw a pic just last week of a spun race, wombvette commented on it (?)

stpman

When I rebuilt m TA's I had to replace na axle because of a spun bearing

turtlevette

did they spin or did they break up like most do?

Mike Ward

The ones I've seen were classic spun races. I take particular interest in this subject as it relates to an area I was responsible for back in the dark ages when I had to work for a living.

Can't say I've seen the same number of fractured races from overly tight fit.

stpman

Spun

hgoodwiniii

Hi everyone, we are getting readyto pack and reinstall bearings on the 76 StingRay after a long wait for parts. I believe I have everything I need and understand the process. However, I have a simple (probably dump) clarity question. What exactly does end play mean? Is it the amount of movement in the spindle after everything is reinstalled? If so, is it up/down, side/side or in/out movement that we are talking about? Thanks.

noonie

With tapered bearings it results in all the above, but you want to measure and set the in/out.

1971corvette

Do you have a shop manual,information,pics to go by ?

Show us some pictures of your work,we might be able to help point out any/some possible problems you might have.

What measurement are you trying to get on the in/out movement of the
axle ?
Remember the grease will take up some room in the bearings and races,so be very very careful on this measurement

Do you have an dial indicator ?
Do you have a torque wrench ?

Good luck

Van Steel

FWIW I buy a lot of cores. I see a lot of front wheel bearing assemblies with spun races. It's pretty much a 50/50 shot if they are good or not and I have to eat the bad ones. I have much better luck when buying t-arm cores.

hgoodwiniii

Ok thanks, so all of the above possible on the movement. I do have a torque wrench and will be purchasing a dial indicator before I begin the installation. It does not seem like I need the magnetic dial indicator base correct? I do not have a shop manual for this job but I do have one on order. I have all the tools (e.g. installation tool, setup tool, shims, etc) recommended by others from Mid America so I believe I'm good to go. Just trying to make sure I understand what I am looking for in the movement and measurements.

Also, I purchased Timken bearings from Duntov Motors. Any opinion on those? I do need to grease the outer and inner surfaces of the races as well correct? Thanks.

1971corvette

you do not need a mag base if you have a clamp style

Timkin bearings are top shelf

and no you don't grease the outer part of the race just were the rollers/bearings ride

Mark

Hey I just noticed you are in Houston,
Where do you live ?
I have all the measuring tools you might need,being I'm out of work machinist.

If you need a hand give me a shout.
PM me on here

turtlevette

spun races on the front? In the hub? or the spindle.

hgoodwiniii

Will do Mark. Will give it a go tomorrow. If not looking good. I will give you a shout. Send me a private msg with your info. Thanks.

Van Steel

Front hubs. Front spindles usually mic out good unless it's really thrashed.

Avette4me

An old spindle works just as well. Emery the shet out of it so your bearings don't get stuck.

hgoodwiniii

Hi all. I have the passenger side done with bearings in place on the 76. I know the specs call for end play to be in the 0.001 - 0.008 range. I actually have 0 measurable end play after I torqued everything down. Is 0 end play going to cause a problem?

wombvette

The problem with 0 is that you don't know if that is really a 0 or too tight. Its going to all read 0. It should have the play, if it doesnt, you really should recheck it. What was the reading with the dummy shaft? However. with some of today's seals it is difficult to measure any play after the nut is tightened. The seals pinch and tighten the unit. If it turns freely with no noticeable drag on the bearings, it might be OK.

hgoodwiniii

The play with the dummy shaft in was 0.002. It spins pretty freely now but it's not loose. I'll probably just remove the other side and compare the spin and go from there.

TeaEye

http://www.lbfun.com/warehouse/tech_...rm_Rebuild.pdf