07 front rotors/pad replacement - Mazda3 Forums : The #1 Mazda 3 Forum
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post #1 of 9 (permalink) Old 06-22-2016, 03:13 PM Thread Starter
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07 front rotors/pad replacement

I want to replace my front rotors and pads and I was hoping to get some information. What special tools, if any, do I need for this project? Do I need a piston clamp or anything like that? Do I need to completly bleed my brake fluid? I can't find a specific video or good pictures so that would be awesome. I have the 2.0 engine if that makes a difference. I saw the sticky thread but wasn't sure if that wouldoesn't be the same for my 07.

Thanks guys! The forums are acting funny and for some reason I have to change my password every time I come here so forgive me if I created a thread similar to this already.

Last edited by nikeman; 06-22-2016 at 03:28 PM.
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post #2 of 9 (permalink) Old 06-22-2016, 06:07 PM
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You will need big fucking hammer (BFH) and something to push piston back into caliper. Don't push the old fluid back though. Open the bleeder and push then. If you never did bleeding on you brakes - do that. Last time I did my 2011, I had to cut the rotors off. Best brakes for under $200

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post #3 of 9 (permalink) Old 06-22-2016, 09:00 PM Thread Starter
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I've never bled any brakes before. How do I do that on the mazda? Only on the front? Can I put that fluid in with old motor oil?

I planned to pick up the rotors and pads at oreillys. I can get both rotors and the brake pads for about $150. Will the instructions from the how to post work on my 07? How about this video? Is it any good?

https://youtu.be/mXQCpKCwvAU
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post #4 of 9 (permalink) Old 06-22-2016, 09:55 PM
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Centric blanks are good rotors

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post #5 of 9 (permalink) Old 06-23-2016, 11:06 AM
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Originally Posted by nikeman View Post
I've never bled any brakes before. How do I do that on the mazda? Only on the front? Can I put that fluid in with old motor oil?

Bleeding brakes on Mazda is no different than any other car. There is youtube for that. Bleed front and rear. Has nothing to do with motor oil. Just don't squeeze the old fluid that resides in calipers back into pipes [when you replace pads].

You seem don't understand that your biggest challenge will be removing the old rotor off the spindle. This is Mazda. This is Rust. After that, bleeding will be like a massage therapy.
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post #6 of 9 (permalink) Old 06-23-2016, 11:53 AM Thread Starter
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I was asking if it's ok to bleed the old fluid into a container I use for used oil.

How do I make sure I prevent old fluid going back up the lines and what happens if I do?

I'm sure it will be hard to get them off but I have a few tools that will hopefully help with that.

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post #7 of 9 (permalink) Old 06-23-2016, 06:47 PM
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I was asking if it's ok to bleed the old fluid into a container I use for used oil.

How do I make sure I prevent old fluid going back up the lines and what happens if I do?
Oh, yea. I do it all the time. When you send this used oil/brake fluid to some shop they will sell it to used oil collectors who then will send it for recycling. In the end it all will be used to burn and generate heat.

So, to prevent old brake fluid... I put a piece of a clear hose on a bleeder and open it. Then I push piston into caliper. I can see the fluid color the bubbles and I can see if there possibility of air going back. After install I bleed the line (rest of it). If you're not installing new pad, just bleed. The brake fluid in piston is contaminated and if you push it back and it reaches your ABS module, it can fail later.

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post #8 of 9 (permalink) Old 06-28-2016, 02:10 PM Thread Starter
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I just bought the rotors and pads. Do I have to completly replace the brake fluid to do this? Since I'm only doing the front can i replace the rotors/pads and just bleed the air out of those lines?

All videos I've seen show them putting new brake fluid in a cup and putting the hose on the bleeder and submerge the other end in the new fluid while bleeding. That's what I plan to do also. Can you tell me what size wrench the bleeder requires? I read it's a special type of open end wrench to prevent stripping?
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post #9 of 9 (permalink) Old 06-28-2016, 03:04 PM
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Quote:
Originally Posted by nikeman View Post
I just bought the rotors and pads. Do I have to completly replace the brake fluid to do this? Since I'm only doing the front can i replace the rotors/pads and just bleed the air out of those lines?

All videos I've seen show them putting new brake fluid in a cup and putting the hose on the bleeder and submerge the other end in the new fluid while bleeding. That's what I plan to do also. Can you tell me what size wrench the bleeder requires? I read it's a special type of open end wrench to prevent stripping?
bleeding the brake is not necessary when changing rotor and pads. Since you are not opening up the brake line when you R&R pads and rotors, air won't be introduced into the system. Some people just like to do it because they are already down there. See this link for a tutorial on bleeding brakes.

If the brake is not mushy and the fluid isn't super old, I wouldn't bother bleeding it. Since on the Mazda 3, the brakes lines are cross connected (right rear is connected to left front), you'll need to jack up all four corners of the car to bleed the brakes. It's not that much more work later to come back if you want to bleed the brakes in the future. You have easy access to the brake line nipple just be taking off the wheel.

I like this video for a tutorial. https://www.youtube.com/watch?v=cmGKaEJjBP8 Everything she does look good except that she put wayyyyy too much grease between the caliper and brake pad.

I don't think you necessarily need a caliper tool for the front, but I would just rent it from Oreilly's just in case. It makes the job way easier. You should be able to rent it from Oreilly's or Autozone for free.
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Last edited by Jchu14; 06-28-2016 at 03:06 PM.
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