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-   -   non-constant squeaking when braking (http://www.ptcruiserlinks.com/forum/general-pt-cruiser-discussions/62945-non-constant-squeaking-when-braking.html)

mmhendrie 25 Feb 2017 01:39 pm

non-constant squeaking when braking
 
Folks - looking for some advice. I'm getting some non-constant squeaking when braking. What I mean by that is, it's not the constant squeal sound when I apply the breaks that I would associate with the low brake indicator - the sound is rhythmic, I only notice it at lower speeds, and it seems the rhythm of the noise depends on how fast I'm going - meaning, if i'm braking at a slightly quicker speed, the squeaking is fast, at a lower speed, it's slow. The stopping power of the car itself is just fine. The sound seems to be coming from the back (rear wheels) - I can't be 100% certain, but that's my feeling. The sound itself sounds like a rusty spring bouncing up and down, or perhaps like a squeaky door, again, non-constant, on-off-on-off until the car comes to a stop. Not very loud, but noticeable.

A bit of background: 2004 PT Cruiser LTD 70k miles - with front disc, and rear drums. The front discs have about 15k miles on them and look great, the rear drums about 12k miles. Note, and I embarrassingly add this detail knowing it might indicate the cause of the issue - I'm the one who changed both front and rear brakes. My confidence level on the front is very high - I've done them a few times, and even changed the rotors last time round. The rear, I struggled with, as it was my first time. I did get the drum machined etc. - followed what I'd researched to be good practices, but, perhaps I mis-stepped somewhere? Anyhow, any advice, as always, greatly appreciated!

dsab 25 Feb 2017 01:59 pm

Re: non-constant squeaking when braking
 
I can't think of anything that would cause a squeaking sound when breaking. If it was a rubbing/grinding sound I would consider the possibility one of the break shoe retainers or brake springs had come loose. The problem only started after you replaced the rear brakes?

mmhendrie 25 Feb 2017 02:17 pm

Re: non-constant squeaking when braking
 
I really can't be sure if it was there as soon as I replaced by rear drums, but it certainly wasn't there before I replaced them.

rob302 25 Feb 2017 04:10 pm

Re: non-constant squeaking when braking
 
Did you apply brake grease to the bump outs on the drum brake backing plate?

mmhendrie 27 Feb 2017 09:29 pm

Re: non-constant squeaking when braking
 
I can't be sure on that - just because it was a while back now. I'll pull the drums, what/where exactly should I be looking for that? I have some anti-squeal grease, so if you can point me in the right direction, i'll throw some on there. While I have the drum off, anything else I should look for/check for that might be the cause?
thanks!
Matt

rob302 27 Feb 2017 10:00 pm

Re: non-constant squeaking when braking
 
where to grease drum brakes - Google Search

Click this and look at the images. You'll get the idea. I'm only on a phone right now, so it's hard to pick a good pic


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