Both front brakes dragging

[Pcleaners2]

Need help
New rotors and pads and brakes still dragging
Can hardly rotate tires by hand
If it helps I do have an 8.8 swap
Had drums before on rear
Rear not the issue though

any ideas
Is there an adjustment somewhere ?? Looked online and didn’t see anything about adjustment of booster

 

[Irun]

Did you check the calipers?

 

[Pcleaners2]

Did you check the calipers?

Yup they’re new

 

[Irun]

My guess is they're a reman. Did you pull them, collapse the piston and test that they moved without binding? I've installed faulty "new" calipers before. Not likely they're both bad, but it's one more thing to check off the list.

 

[Pcleaners2]

So your saying to push the pistons in and see if they move in. If they don’t move into the caliper then they are binding

 

[JeepingNet]

Check if you have worn in notches on the knuckle. Its very common for that to happen and then the pads get stuck.

 

[Irun]

So your saying to push the pistons in and see if they move in. If they don’t move into the caliper then they are binding

They should move in easily, using a brake caliper tool. Then have someone press the pedal lightly, with the caliper off the rotor, and watch that the piston moves out smoothly.

 

[Irun]

As @JeepingNet said, I'd also check the knuckles and caliper boots/pins for brake grease.

 

[mrblaine]

Probably has the early rotors on the late unit bearings and the rotors are dragging on the knuckles.

 

[Pcleaners2]

Yes there’s notches but I thought that was how they are

 

[Pcleaners2]

Probably has the early rotors on the late unit bearings and the rotors are dragging on the knuckles.

Yes it feels like the rotors are rubbing something . So I may have the wrong rotors . Darn well I guess Amazon sent the wrong rotors

 

[Pcleaners2]

This happened when I replaced the rotors I believe

 

[Pcleaners2]

Probably has the early rotors on the late unit bearings and the rotors are dragging on the knuckles.

Once calipers are removed rotors spin perfectly so I guess that rules out rotors . Tommorow I will see if calipers go in and out easy

 

[mrblaine]

Once calipers are removed rotors spin perfectly so I guess that rules out rotors . Tommorow I will see if calipers go in and out easy

No, you need to pull the tire and then clamp the rotor back on with the lug nuts to test.

 

[Pcleaners2]

Once calipers are removed rotors spin perfectly so I guess that rules out rotors . Does my proprtionvalve need replacing or remove o ring ?

No, you need to pull the tire and then clamp the rotor back on with the lug nuts to test.

Oh got it will do as soon as I get home today
Thanks

 

[Pcleaners2]

Ok so there is notches fairly deep. Welded them and ground flat
I do notice that both rotors seem a bit thick for the pads or the pads are really thick or the calipers don’t slide back far enough toward the center of the vehicle( in other words centering themselves so the inside pad doesn’t ride the rotor). But the improvement is slight but well see how it is tommorow when I take it out for a longer spin.
This is all ac delco stuff. The rotors and pads and calipers
Not sure how much of a mistake that was but has always stopped good

 

[Pcleaners2]

Oh got it will do as soon as I get home today
Thanks

Bought new rotors at oreilly
Doesn’t drag now
I think I did have the early rotors like Blaine said

 

[mrblaine]

Bought new rotors at oreilly
Doesn’t drag now
I think I did have the early rotors like Blaine said

Look at the inner edge of the rotor and you'll see where it was dragging on the knuckle and marks on the knuckle if that was the case.