Front brake pads running rotor after brake job

Waystro

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So as y'all know I did a compleat front brake job but the front brake pads are rubbing the rotor is this normal? My granddad said it was normal to do that but I just bled the brakes and have not driven the truck yet.
 

sjwelds

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It's my understanding that on disc brake systems, there is always contact between the pad and the rotor.

I've heard it said that guys who used their cars for racing way back in the day preferred drum brakes all around for that reason. They actually thought that disc brakes negatively affected 1/4 mile times....just hope they had a long shut-down area beyond the finish line to slow down!!! LOL
 

snicklas

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How hard are they rubbing? Can you still turn the wheel, or is it like the brakes are on? On a disk brake, when you remove the pressure from the system (Take your foot off the pedal) it only releases just enough to not be applied. They will still touch, and with new pads, you may hear them "drag" a bit. If you can spin the wheel with it off the ground and it spins fairly easily (easy for a 100 lb package of everything hanging on the bearings) you should be fine. If they only spin while you are turning them, and they wont "coast" a bit I think that is a bit tight. If you really have to force them to turn.... that is a problem.
 

Waystro

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How hard are they rubbing? Can you still turn the wheel, or is it like the brakes are on? On a disk brake, when you remove the pressure from the system (Take your foot off the pedal) it only releases just enough to not be applied. They will still touch, and with new pads, you may hear them "drag" a bit. If you can spin the wheel with it off the ground and it spins fairly easily (easy for a 100 lb package of everything hanging on the bearings) you should be fine. If they only spin while you are turning them, and they wont "coast" a bit I think that is a bit tight. If you really have to force them to turn.... that is a problem.
No they turn pretty easy but I can tell that there is contact. I'll hàve to get some pictures of the passenger side was paper thin and cracked hopefully that what's causing my pulling
 

franklin2

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If you used the original calipers, they may be stuck. Usually when you have calipers with very worn pads, the pistons in the calipers are extended way out, and all that old rusty brake fluid is in behind them. When you take a c-clamp and squeeze the pistons back up in the caliper to make room for the new pads, it pushed the piston over all the rust in the caliper bore, and there is usually a 50-50 chance they are going to start sticking.

If you put new calipers on it, then you should be ok.
 

icanfixall

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They do drag but turning the wheel is still easy. A rubber brake hose can cause the calipers to stay tight too. With vacuum assist brakes like is standard on our rigs we have 1000 lbs of hydraulic pressure available at the calipers. If the hose is restricting the reverse flow the calipers stay in tight contact with the rotors and pads. The hydroboost brake assist has about 2100 lbs of available pressure to work the brake shoes and pads. Hopefully we don't need that much pressure but its nice to know we have twice the braking pressure available.
 

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