Submariner1
Senior Member
- Joined
- Sep 3, 2016
- Messages
- 4,694
- Reaction score
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- Location
- Windsor Berkshire
- Your Mercedes
- CL500 2009 5.5
never heard this with the window up. But with the windows down.
I get intrusive brake squeal at about 5mph.
Going fast, breaking hard or softly there is no noise.
Just before stopping say at 5mph ( hard or soft braking) it starts, and just before you stop it goes away.
With The wheel raised, it rotates easily so not binding, callipers are cool so not overheating. And I get good mpg.
I suspect due to a (now fixed) leaking strut, and in preperation for painting the brake callipers I have been cleaning the callipers up with fairy liquid and a powerwasher and brake cleaner, so I guess may have cleaned off any coppa slip.
Note mercedes dont advocate using any paste on these pads if my understanding is correct.
Here is the old nearly worn out pad
The bottom pin is how they were and the top pin is how they clean up with brake cleaner
Note the pads have been cleaned up a little, but I tried to lesve the coppa slip as it was.
Is there supposed to be a half circle indentation?
This part no is ending 421 06 10
Whereas , Oddly the new part no A 0044208020
Did they put in the wrong part? ( the original owner did use a scruffy garage for a few things)
Or are these old ones, not real Mb brake pads.
Any tips what might be causing break squeal most appreciated .
The pins came out easily, and the bearing surface on the caliper looked ok.
Or will it go away with a good clean up and some coppa slip on piston heads and back of pads and some pagid break gease on pins and sliding surfaces.
Oh the pads pushed back by hand so not stuck.
I get intrusive brake squeal at about 5mph.
Going fast, breaking hard or softly there is no noise.
Just before stopping say at 5mph ( hard or soft braking) it starts, and just before you stop it goes away.
With The wheel raised, it rotates easily so not binding, callipers are cool so not overheating. And I get good mpg.
I suspect due to a (now fixed) leaking strut, and in preperation for painting the brake callipers I have been cleaning the callipers up with fairy liquid and a powerwasher and brake cleaner, so I guess may have cleaned off any coppa slip.
Note mercedes dont advocate using any paste on these pads if my understanding is correct.
Here is the old nearly worn out pad
The bottom pin is how they were and the top pin is how they clean up with brake cleaner
Note the pads have been cleaned up a little, but I tried to lesve the coppa slip as it was.
Is there supposed to be a half circle indentation?
This part no is ending 421 06 10
Whereas , Oddly the new part no A 0044208020
Did they put in the wrong part? ( the original owner did use a scruffy garage for a few things)
Or are these old ones, not real Mb brake pads.
Any tips what might be causing break squeal most appreciated .
The pins came out easily, and the bearing surface on the caliper looked ok.
Or will it go away with a good clean up and some coppa slip on piston heads and back of pads and some pagid break gease on pins and sliding surfaces.
Oh the pads pushed back by hand so not stuck.
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