Drum Brake Squeal

[landers66furyiii]

I’m looking for some help on my latest issue on my 66 Fury. Right after I first got it I redid the entire brake system. I’ve put about 20 miles on it since(going this week for inspection) but have a high pitched, pulsating squeal coming from my passenger side when I brake. I wire brushed and painted the backing plates when I had everything off so rust shouldn’t be a problem and they are also adjusted correctly. I’m looking to see if anybody else had this issue and/or any fixes. Thanks in advance!

 

[Trace 300 Hurst]

I hope you didn't paint the inside of the backing plates. It gets hot in there, the paint can get gummy, and the shoes must slide freely on the plates.

Check the outside edges of the shoes to see if they are somehow touching the inside of the drum. Unlikely, but possible.

If not, scuff the entire friction surface of the shoes with 60 grit sandpaper to remove any glazed shoe material....which can definitely cause squealing.

 

[landers66furyiii]

I hope you didn't paint the inside of the backing plates. It gets hot in there, the paint can get gummy, and the shoes must slide freely on the plates.

Check the outside edges of the shoes to see if they are somehow touching the inside of the drum. Unlikely, but possible.

If not, scuff the entire friction surface of the shoes with 60 grit sandpaper to remove any glazed shoe material....which can definitely cause squealing.

I had them off the other day the scuff them up a bit, there were a few glazed spots. I plan on taking them off in a little bit once they cool off. I’ll check the edges and see if it’s rubbing the backing plate at all.

 

[Trace 300 Hurst]

No, not the backing plate. The shoes are firmly against on the plate by the springs. I'm talking about the inside front surface of the drum that is NOT supposed to touch the shoes.

 

[landers66furyiii]

I ordered new shoes and looked at the old NAPA(JUNK!) ones. It turns out the shoes looked to be for an oversized drum and were just making contact on the heel and toe of the shoes causing glazing. She stops better and quieter now!