13 replies to this topic

[Delete This Account]

G'day guys.

Well my back rear brake started making a scratching sound while driving yesterday and today.

Took the wheel off. Noticed this bastard wasn't where it should have been and was causing the sound, so I ripped it out. (don't know if that's good or not??)





Then I noticed this (again, not sure if it's normal or not, or even related. When I pushed on the inside brake pad it actually moved freely.) Please watch video below.



Can you guys please tell me if it's normal or all good to keep driving?
I have a quick test run around the block. Brakes seem to work 100% and no noise.
Let me know your thoughts, brake guru's.
Cheers!

[Jordan]

Not of much help, but this happened on the nasho run to Chris S.
They just ripped the squealer off on the side of the road and kept going

[fatcat67]

That's OK.
As long as the pads don't do that now that the brakes have been used.
It should move just a fraction off the rotor, just enough to clear and not rub.
The thing you pulled out is just a pad wear indicator.
Not necessary. Just keep an eye on them for wear.

[Delete This Account]

That's OK.
As long as the pads don't do that now that the brakes have been used.
It should move just a fraction off the rotor, just enough to clear and not rub.
The thing you pulled out is just a pad wear indicator.
Not necessary. Just keep an eye on them for wear.

Thanks guys.

That's eased my mind.

That's pads don't do that after use so it should be all sweet.

[Tim.]

Agreed, not critical in brake function. They sometimes dislodge and cause annoying sounds though.

[Cam.]

If that video was filmed after you ripped the squealer off, There would be some play with the pad.

After a drive the play should go away.

[RX25SE]

That is a 'anti rattle' clip. There should be four in each caliper, two per pad.

It looks like the tab that holds it in the caliper bracket has snapped off, causing it to jam against the disc making the scraping sound.



They serve two jobs:
To prevent the pads from rattling in the caliper braket but still allow for the pad to move toward the disc as it wears.
To provide a hard surface (they are spring steel) for the leading edge of the pad backing plate to work against.


As above, not really necessary but I would make sure you have the remaining one (you may have to pinch it from the opposite pad if they are paired) on the leading edge of the pad backing plate. This will prevent the pad wearing the softer metal of the caliper bracket.

Pad backing plate is the metal part of the pad that the friction material is bonded to. The leading edge is the egde that is forced against the caliper as the brakes are applied when the car is travelling forwards.

[Alex]

I concur with Jase.

Anti rattle plates.

Not essential, but nice to have. Prevents rattle noises, which can be mildly annoying.

See if you can score replacements. Some people wouldn't, but I have OCD.



Brembos would fix all of this.

[RX25SE]

See if you can score replacements.

Agreed.

[Delete This Account]

Thanks for the help lads. Insightful as always.

[fatcat67]

That is a 'anti rattle' clip. There should be four in each caliper, two per pad.

It looks like the tab that holds it in the caliper bracket has snapped off, causing it to jam against the disc making the scraping sound.



They serve two jobs:
To prevent the pads from rattling in the caliper braket but still allow for the pad to move toward the disc as it wears.
To provide a hard surface (they are spring steel) for the leading edge of the pad backing plate to work against.


As above, not really necessary but I would make sure you have the remaining one (you may have to pinch it from the opposite pad if they are paired) on the leading edge of the pad backing plate. This will prevent the pad wearing the softer metal of the caliper bracket.

Pad backing plate is the metal part of the pad that the friction material is bonded to. The leading edge is the egde that is forced against the caliper as the brakes are applied when the car is travelling forwards.

Jase/Alex, I just want to make sure I haven't got this wrong. Not having a go.
Walts' picture looks like a munted wear indicator to me. see below. It's about 5mm wide and 25 mm long.

The anti rattle clips are quite a bit a bit thinner material than the wear indicator and are wider to take the whole depth of the pad from new to worn. The reason I'm sure they are thinner is that I've sliced myself a dozen times on the stupid things.

Either way you can live without both but I'd much rather the anti rattle clip in than not.

[Alex]

I believe Frank is also correct.

How much meat is left on the pads, Walts?

[Delete This Account]

I believe Frank is also correct.

How much meat is left on the pads, Walts?

I think there's about 60% pad life left, so that shouldn't be an issue.
Cheers guys.

[RX25SE]

Frank wins!