God Damnit. Brakes
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God Damnit. Brakes
argh, so last night i was diong some 'spirited' driving. and all of a sudden, when i hit my brakes i hear this hellatious noise up front left. i get out, and my wheel has been chewed up on the inside. my caliper was missing its lower bolt! i couldnt beleive it, i remember tightening them bolts as hard as i could *sorry, i didnt torque them like im supposed to*. i drive realy slow home, and i check the top one and its really loose too. was this because it got hot and cold or whatever and loosened up? or is it just my fault that i didnt tighten them enough?
#2
I won't let go
There are some things that you can just hand tighten (meaning with a socket wrench), but the caliper assemblies really get strained so always torque them to spec. Around 60 ft/lbs I believe is the spec.
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Overtightening can cause the bolt to stretch also, particularly if the component gets hot. Then the thermal expansion of the bolted part stresses the bolt to the point of stretching, and the bolt is shot. The bolt will look ok, but doesn't have much clamping tension left and works loose.
Dave
Dave
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Wow! That's quiet the story! I had one of the bolts loosen up a little once on me, but that was because I got distracted and forgot to torque it down. I heard the noise every time I braked and it didn't come off. You're lucky that it didn't come totally free and rip the brake line off. I don't think you would have had any front brakes after that.
As for what to do, get some new bolts to start with (and don't make them home depot brand!) I think those are 10.8 bolts (high grade) and should really be replaced with the same kind. Then check to make sure nothing is stripped out.
Good luck!
As for what to do, get some new bolts to start with (and don't make them home depot brand!) I think those are 10.8 bolts (high grade) and should really be replaced with the same kind. Then check to make sure nothing is stripped out.
Good luck!
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#8
Mr. Links
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Originally Posted by Trexthe3rd
Say it with me..........LOCKTIGHT.
onelife2stories,
Either you didn't get enough torque on them or the bolts aren't the stock bolts with the correct hardening. They aren't cheap bolts. I replaced mine last year and I think they were about $8-10 a piece.
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Originally Posted by Trexthe3rd
Reading is fundamental. Get your self a copy of Hooked on Phonics boy.
#12
RX-7 Bad Ass
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I've had that happen on an FC - it was pretty high mileage and the bolt snapped off. It's scary as HELL having the caliper hit the wheel.
Some times it's just an old bolt - too many heat cycles and removal/installation cycles.
Get new bolts from Mazda and take that load off your mind . You definitely don't want to do that again!
Dale
Some times it's just an old bolt - too many heat cycles and removal/installation cycles.
Get new bolts from Mazda and take that load off your mind . You definitely don't want to do that again!
Dale
#14
2/4 wheel cornering fiend
Originally Posted by dgeesaman
Overtightening can cause the bolt to stretch also, particularly if the component gets hot. Then the thermal expansion of the bolted part stresses the bolt to the point of stretching, and the bolt is shot. The bolt will look ok, but doesn't have much clamping tension left and works loose.
Dave
Dave
Regardless, both of these problems are the reason why there are "torque specs" and "torque wrenches". They didn't just come up with these out of thin air.
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thanks everyone! i dont think that i over torqued them. they werent stripped, i checked both the bolts and the spindle *is that correct? im still a newb*. neither one looked like it had any damage. i was wondering though, i had put antiseize on...could this be the problem? they were a bitch to get out so i thought maybe a little AS would help for the next time...
and yes, the caliper did reciece some damage...the lower rear part of it had hit the wheel, and it actaully caught a few times when i was slow. that was scary, clunk clunk clunk GAAAAARRRRRRRRRRR
and yes, the caliper did reciece some damage...the lower rear part of it had hit the wheel, and it actaully caught a few times when i was slow. that was scary, clunk clunk clunk GAAAAARRRRRRRRRRR
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:-( update
so i think i damaged my wheelbearing too. forgot to include that in my last post a few min ago. i got another bolt and got the caliper back on, i figured it would be a little out of balance b/c the wheel weights had been knocked off. well im driving and all of a sudden on a right turn *weight to the left* its griding really really bad. i thought the caliper came off at first, then i realized that it had to be the wheelbearing out... DEPRESSION
so i think i damaged my wheelbearing too. forgot to include that in my last post a few min ago. i got another bolt and got the caliper back on, i figured it would be a little out of balance b/c the wheel weights had been knocked off. well im driving and all of a sudden on a right turn *weight to the left* its griding really really bad. i thought the caliper came off at first, then i realized that it had to be the wheelbearing out... DEPRESSION
#18
2/4 wheel cornering fiend
I'd say Mahjik's probably right, you didn't torque them tight enough.
As long as a bolt is properly torqued, anti-seize won't result in any bad effects.
As long as a bolt is properly torqued, anti-seize won't result in any bad effects.
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eh go to hell man! lol, yeah thats my younger brother, he got my Turbo 2. he's a cocky bitch, but i have to admit, he is more mechanically inclined than i am. but hey, everyone forgets to do something sometimes right? dotn tell me that any of you have never made a stupid mistake!
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