brake trouble, front brakes lock when hot Options

[trfrick]

I need some help - I replace the front rotors, calipers, pad, flex line and m/c. Now when I went for a test drive after several hard stops the front brakes get hot and lock up.
After they cool they release.

What should look for?

Thanks
Tom

[Eric_Shea]

Where'd ya get the crappy rebuilt calipers? (IMG:style_emoticons/default/hide.gif) (IMG:style_emoticons/default/biggrin.gif)

Tom, can we determine if a piston is sticking or not? Short drive, does one caliper get hotter than the other. Short stop, hands off the wheel, does it pull to one side?

It almost sounds like one of your knockback mechanisms' is not working properly causing excessive heat to the system, especially if you have new lines and MC.

Do you see any "blueing" on one of the rotors vs. the other?

Otherwise I'd double check that pedal free play again as it sounds tailor made to your problem.

One other thing to check is the bearing play on your new rotors etc. Double check the spindle nut for tightness and make sure there's no excessive runout causing the rotor to wobble and contact the pads causing heat.

Check the pad gap with the car cold... both inside and outside. Can you turn the rotor by hand (when cold) or do you feel a substantial amount of rubbing? If there is substantial rubbing, we may want to look at the bearings as a possible cause.

Let's dig in...

[trfrick]

Thanks Eric - I don't think it is the person who rebuilt the calipers as much as the one who installed them (IMG:style_emoticons/default/blink.gif)

It does not pull to one side but the right does seem hotter than the left when it happens.

WQhen its cold I can turn the wheels buit there is some rubbing, a little more than I expect.

What should the pad gap be?

I will double check the spindle nut.

Thanks again!