rear spindle

[Raidervette]

morning all,
quick question here, I just had new wheel bearing put on left rear spindle. problem is it gets hot after short drive. how tight do I have to tighten the castle nut on the back side of the spindle? I was told 100' lbs.. Then my friend told me he thought after you tourqe it down you should loosen and then snug it up and thats it. all the brake stuff is in right so it is either the caliper or something in the bearing. any help would be appreciated.

thanks, ed

 

[Tweek]

ED, the spindle adjustment ( or endplay) is done by the shims for the rear bearings, and should be somewhere in the 0.001 - 0.008 range checked with a dial indicator. You are correct on the torque at 100ft-lbs, and if the cotter pin holes don't line up you shoud go tighter to get the cotter pin in, don't back the nut off for alignment of the hole. I would check the play in the bearing for a to tight condition if something is heating up? I would also check rotor runout to see if that may be causing your heat from the break pads. Good luck

Ron

 

[John Kuzman]

Ed,

I had a similar problem and found it to be the parking brake out of adjustment. The heat was from running with the parking brake shoes being in constant contact with the rotor. Just a thought....

 

[Raidervette]

thanks for the suggestions guy's. I have the parking brakes adjusted way out they're not even touching. I also had the bearings put on by Bairs so they should also be correct. I jack the vette up,press the brakes,get out and turn the tire easily so the run out should be right. The only other thing I can figure to be the problem would be a warped rotor. Unless you have any other ideas. I'm puzzled for sure!


Ed

 

[GTR1999]

It should not be hot. I would start from the begining and check all the things the others said:

1 - parking brakes - if too tight then the heat will generate form the spindle but the wheel will be hot to the touch too.
2- bearing setup,if Bair's rebuilt them they should be correct but who knows? The bearings are setup lightly oiled and torqued to 100+ft/lbs and checked for endplay,usually around .001-.002 max. When the endplay is correct then the bearings are greased and assembled. The endplay should not change from the setup position and the spindle should move freely,sometimes feeling slightly snug but not tight by any means.
3- rotors should be checked for runout,keeping them under.003" although .005 will work. .005-.010' runout shouldn't cause excessive heat,if you had much more then .005" you would start to have bleeding issues too unless you have O ring calipers.

Bottom line is,there's not much in that area. Could be sheilds rubbing? I would think you would hear that though.

 

[Raidervette]

Thanks again, I grabbed the heat sensor, went for a short ride and then pin pionted were the hottest spot was. E-brake pads! So thats a relief.

Later, Ed