Brake squeal

[Chris Edgar]

Fitted new front shoes (1962 7") about 170 miles ago...
they have begun to squeal very badly..I think that it's just the offside ones.
When I say squeal, I mean SQUEAL, it gets rapidly worse as they are used more & get hotter & becomes very embarrassing as well as disconcerting.
Also my impression is that these shoes exhibit fading far more than the previous ones. So much so that I had to pull off the road & let things cool down for a while, when out in the Yorks Dales at the weekend.
Never had to do that before.

I know there is a "fix" for squeal in the manual, but that seems a last resort.
I'm wondering if I should get some more shoes from another source?

Has anyone else, with new shoes, experienced this recently?


Chris

[irmscher]

Maybe file them down a bit Chris to take the glaze off

[mike.perry]

Are the shoes able to move sideways so that the metal part rubs on the side of the drum?

[bmcecosse]

Shoes these days are made of 'camel dung' - and yes they are much less fade tolerant. The squeal may be dust - worth clearing it out. And urgently search for a set of 8" front brakes !!!

[Chris Edgar]

Thanks for the suggestions...

I shall check that there is no sideways movement tomorrow hopefully.

The local factor has them in at the staggering cost of £21 + vat...I suggested that they must be very good to be that price...maybe unicorn dung Roy!

Will post back with results if any.
The noise at the moment causes kids to run crying to their parents & horses to bolt.
Etc.

thanks

Chris

[bmcecosse]

They may be down to the rivets.........

[Chris Edgar]

Well, decided to brave the cold & lack of space in the garage & have a look....

Remember, these are new shoes, about 200miles.

Update;
Drums off...
Nothing wrong to be seen at all. All in place & working.
Linings bonded, not riveted
I very slightly chamfered the side edges. ...not too much or I would lose brake lining area!
The leading & trailing edges were already chamfered.

re-assembled & adjusted.
Test drive...slight improvement but not a lot.
Maybe, in time they will quieten down, maybe not. Wonder if it is the material that the linings are made of

The drums do have some scoring..but the old shoes did not squeal at all.

Maybe I will phone the suppliers & complain...that's why I wondered if any one else had had recent similar experiences.

[bmcecosse]

I suppose you could try fitting the bee-hive springs...........

[Chris Edgar]

They don't have the beehive, they have the other type...steady spring, dished washer & pin.

Looking at the linings, they still have a way to go before they are fully bedded in...only evidence of friction at leading & trailing edges so far.
Maybe all will go quiet in the fullness of time.

I appreciate your suggestion of upgrade to 8". At the moment the budget won't allow.24

[robedney]

Cheap lining material has a tendency to glaze -- and glazing can cause squealing. You might try -- next time you feel like pulling the drums yet again -- going over the lining surfaces with some 120 grit emery paper. Your only intent here is to renew the surface. You mentioned that you have some scoring on the drum surfaces. That might mean that you're stopping the car with less friction surface area then intended -- which might mean that your glazing some areas of the lining really quickly. It doesn't hurt -- and can sometimes help -- to also scrub the drums with the same emery paper. If all else fails, you can return to the days of old when linings were grooved -- this will often stop squealing when all else fails. The point of the grooves was to channel dust/water/dirt out from in between the drum and the shoes.

[bmcecosse]

I know they are not actually 'bee hive shape' - but yes that's the springs I was suggesting.

[Chris Edgar]

Ok, when do I next take the drums off (yawn!)
I will try the rub down Rob. If it does the trick the result should be immediately apparent.

Thanks to all co-respondents!

Chris