Brake question

[zip04]

Last weekend I swapped out my brake hoses front and rear, rotors, calipers, and pads (Black Magic kit). Today, my Jeep started squealing every time I applied the brakes. Before pulling the rear wheels off and inspecting the drums and shoes, I wanted to see what the experts had to say.

They were not squealing before the replacement or after until this afternoon. It isn’t a grinding, just a light high pitch squeal.

 

[skrelnik]

Did you break the pads in? You have to follow the BMB instructions and do a proper break in.

 

[CodaMan]

Did you break the pads in? You have to follow the BMB instructions and do a proper break in.

X2

 

[Rob5589]

Lightly oil the pads. Should take care of the squeak

Black Magic Brake Pads

Break-in Instructions

WARNING: In order to achieve the best results from these brake pads, the following break in procedure must be done.

As in all things brake related, if you do not understand what you are doing, get help or assistance from someone who does. Failure to properly install and/or diagnose issues that can arise from an improperly functioning brake system or part installation, can and will lead to injury or death to you or others.


WARNING: Be safe and aware of your surroundings during the break-in procedure. Use an area that is low in other vehicular traffic and pedestrians in order to be as safe as possible.


WARNING: Do not over tighten the caliper bolts. The torque value is 11-12 ft lbs. Over tightening can and will strip out the threaded holes in the steering knuckle.


Step 1- Do a series of 5 back to back normal to moderately aggressive stops from 40mph to a rolling stop. Do not come to a complete stop, but almost. Do not ride the brakes during the break in process.


Step 2- After the first 5 stops; drive around at normal speeds for approximately 10-15 minutes to cool down the pads. During this time, try to use the brakes as little as possible. If you have to stop, do so moderately and then use the parking brake to hold yourself in place until such a time that you can proceed with the cool down. The object is to keep from imprinting a layer of friction material onto the hot rotor.



Step 3- Repeat Step 1 and 2 again.



Step 4- By this time, the brakes should be safe enough to drive normally and should be left to cool down overnight if possible.



Step 5- After an overnight cool down, repeat Step 1 and 2 again.



After Step 5, drive and use the brakes normally. The stopping performance should continue to improve steadily until it finally levels off.

 

[BendLarry]

X2

Did you apply the anti squeal grease per the instructions?


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[zip04]

I followed the break in procedures of going 40 and braking 5 times, cooling for 15 minutes, and then repeating again, then resting it over night and following the procedure one last time. I did not see the line item for the grease. I’ll apply the grease.

Edit to say that I greased all of the contact points except the back of the brake pads when I did the install. I never knew you were supposed to do that.

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[Drizit]

I followed the break in procedures of going 40 and braking 5 times, cooling for 15 minutes, and then repeating again, then resting it over night and following the procedure one last time. I did not see the line item for the grease. I’ll apply the grease.

Edit to say that I greased all of the contact points except the back of the brake pads when I did the install. I never knew you were supposed to do that.

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That'll probably do er. It helps the pad sit level and probably absorbs some harmonic vibrations.

—
There must have been a time
when we could have said no.