Brakes dragging after installing new front pads and rotors
10-23-2016, 03:17 PM
#1
Registered User
Thread Starter
Brakes dragging after installing new front pads and rotors
Just got done replacing front rotors and pads (OEM pads, Centric Premium rotors). I also cleaned and lubricated the slide pins all around. There is audible drag on the front brakes, and I can barely turn the rear brakes by hand. It's possible I introduced air in to the system (syphoned out master cylinder, opened bleeders up front while compressing the piston, fluid level dropped quite a bit before I noticed). I was planning on bleeding the brakes all around before finishing up, do you think air in the system could cause them to drag or should I be looking at something else?
10-23-2016, 04:40 PM
#2
I don't think air in brake line will cause brakes to drag. The pads may not be centered, yet. Try driving the car around (after bleeding out any air) --- and see if the wheels spin ok, at rest (car raised).
10-23-2016, 06:17 PM
#3
Open them up and retract the piston inwards further, sounds like the piston wasn't pushed in enough.
10-23-2016, 07:42 PM
#4
Probably put the slide pins in backwards. I always tell people do them one at a time.
10-24-2016, 06:02 AM
#7
To compensate for one pin expanding more than the other under heat. If you put them in backwards the marginal one will freeze in its bore.
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10-24-2016, 06:03 AM
#8
The thinner one has slots instead of being round. I don't know which goes where though. I don't have that problem cause I grease them 1 at a time.
10-24-2016, 07:27 AM
#10
Registered User
Thread Starter
Bled the brakes, front brakes feel fine (can turn rotor easily by hand, very small amount of noise but I think that's normal?). Rear brakes are still foiling me. Turning the rear left rotor by hand is possible with lots of force. Cannot turn the rear right rotor by hand. With the car in 1st gear, the rear left rotor will turn, but the rear right is still frozen.
I did the pins one at a time, though I will double check the pin orientation when I disassemble the rear calipers again to be sure. Visually, how can you tell the upper and lower pins apart?
Is it possible to use too much grease? I cleaned the pins with brake clean and used a good amount of grease. The pins moved freely afterwards, before reassembling the rear calipers.
Going to try to screw in the rear pistons further - I screwed them in enough to reassemble, but there may be more travel.
I did the pins one at a time, though I will double check the pin orientation when I disassemble the rear calipers again to be sure. Visually, how can you tell the upper and lower pins apart?
Is it possible to use too much grease? I cleaned the pins with brake clean and used a good amount of grease. The pins moved freely afterwards, before reassembling the rear calipers.
Going to try to screw in the rear pistons further - I screwed them in enough to reassemble, but there may be more travel.