New Rear Brakes-Rotors

[Ndx]

Hey Guys,

I recently changed brakes on my Mazda 3
Rotors magnum + Ceramic Hawk Pads.

I use emergency brake always when parked ...
So today I noticed when I had emergency brake ... That I can move car ... Like brakes are not grabbing strong enough

You can here them scrapping rotor...

PS by move I mean its moving slightly you can feel that emergency brake is On ...

I cleaned pins ... and I used a LOT synthetic silicon lube on them

 

[sciphi]

Did you use the square tool when pushing in the pistons? Pushing them in straight is known to break the parking brake mechanism.

 

[unDummy]

Calipers with integrated e-brake requires the pistons to be screwed in.

 

[Ndx]

I did use tool to screw them in ...
Brakes are working! they are not bitting strong ..

 

[unDummy]

They need to self-adjust and I hope you gave the vehicle a good 4 wheel bleed.

 

[froggy81500]

did you pump up the brake pedal after you finished? Also, did you bed the new pads in?

 

[Ndx]

I did pump the pedal I have them for a week now ...
I will bleed brakes tomorrow

 

[froggy81500]

fortunately, I've never had the privilage of working on rear discs with the e-brake integral to the caliper. the only rear disc e-brakes I've worked on are the drum in hat variety and I like that design much better

 

[PT1]

I always open the bleeder to relieve any fluid pressure from pushing contaminated fluid back into the system when retracting the pistons. Instead it pushes all the crud out of the system.

 

[KrisZ]

How high does the parking brake travel, is it more than ususal?
Pulling the paring brake about 10 times should reset the e-brake.

 

[Big Jim]

I have experienced the same issue.

My 98 Ford Contour SVT came with organic rear pads. The park brake always held the car when parked.

When they wore out, I replaced them with semi-metallic pads. The semi-metallic pads never did hold the car as well. I had to really yank on the park brake handle to get them to hold. They usually seemed OK when I parked the car after driving, but by morning, especially in cold weather, the car would roll when I pushed in the clutch.

I replaced them with ceramic pads and now they hold about the same as the original organic pads did.

The semi-metallic pad stopped the car much better than the organic pads though, especially once they were warmed up. The ceramic pads seem to be the best of both worlds, stopping power similar to the semi-metallic pads but no issue about keeping the car from rolling when parked.

In short, it may be the nature of your pads. The rear brakes do not have nearly the impact on braking as your fronts do, so you might want to switch back to a more street friendly rear pad.

 

[mechtech2]

They may not be seated yet.
Also, parking brake systems work best if used all the time.
Either use them all the time, or never use them, seems the best options.

 

[Big Jim]

Originally Posted By: mechtech2
They may not be seated yet.
Also, parking brake systems work best if used all the time.
Either use them all the time, or never use them, seems the best options.


I should have mentioned that they may not be seated yet. Give them a couple of weeks before doing anything different. Mine never did improve and they were on for a year or so before I finally changed them.