SOHC.co.uk Forums > CB350/400
Front brake squealing
exvalvesetdabbler:
Everything in my front brake is OEM except for dot 5 brake fluid.
There is a little play on the pivot pin, it's well greased so I wouldn't expect the squeal to be coming from there. Pretty sure its the glaze on the pads which is then depositing on the disc. A quick wipe of the pad surface with medium sandpaper always clears it.
Mine is probably made worse by too much gentle braking in urban traffic.
Regards
Dave
Mikep328:
I don't know if this will help in every (any?) other case but when I go out on my motos, I always do a couple of "emergency stops" at the beginning of each ride as traffic permits - braking as hard as possible from 50-60MPH . On my modern bikes that activates the ABS; on the 400F the front tire will "howl" just short of lockup. I don't REALLY know if this procedure helps keep the brake system in good order but I've convinced myself that it does! ;)
Ken4004:
Front brake update,
I have run through the pad bedding in procedure after removing pads and rubbing off the glaze with emery cloth and as soon as I applied the brake I had the squeak but it has improved after a 50 mile ride but is still there.
I think this is because the brakes and disc were getting hot and this seem improve the squealing which now is only slight.
You could hear the brakes squealing a bit before I went out for a ride will pushing it around to get the bike out of the garage.
I think I will let the pads wear down again and continue to clean and de glaze over a couple of rides and see if they improve.
Again thanks for all the advice , a very interesting subject that has provoked a good chat on the forum.
Bryanj:
If its squealing pushing it around the caliper/pivot is not moving free enough or slight hydraulic pressure is staying on, lines/master
exvalvesetdabbler:
For something to compare with mine start to squeal after about 600 miles after deglazing. But I do quite a bit of around town riding so you tend to be on the brakes gently quite a bit.
When it was mot tested the numbers were always good even when squeaking.
Regards
Dave
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