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**slomotion** · 02-01-2016, 10:15 PM

I think what you're experiencing is simply rust dust building up within the drum. The next time it happens and you have access to an air hose, try blowing out the drum through the adjustment slot, or around the diameter on the edge of the backing plate, then drive it again and see if the squeal has diminished. In the "old" days the shoes were an asbestos compound that absorbed the dust, the newer none asbestos linings are not so forgiving.

02-01-2016, 10:15 PM	#4
slomotion Old Duffer Join Date: Mar 2003 Location: Maine Posts: 1,823	Re: drum brake question I think what you're experiencing is simply rust dust building up within the drum. The next time it happens and you have access to an air hose, try blowing out the drum through the adjustment slot, or around the diameter on the edge of the backing plate, then drive it again and see if the squeal has diminished. In the "old" days the shoes were an asbestos compound that absorbed the dust, the newer none asbestos linings are not so forgiving. __________________ '68 Short C20 Flatbed Dually w/ 292 4bbl, Langdon cast headers, and WC T5 trans. '81 G10 Shorty Van "Good judgement comes from experience, and a lot of that comes from bad judgement." Will Rogers "Under promise, then over achieve."