Here’s something I was thinking of recently - what’s the most likely cause of drum brakes being noisy?
I was chasing down a rear chirping noise from the rear of a van. The brake shoes were replaced with OE Toyota shoes. Shortly after, chirping sound at low speeds and braking. I had a local machine shop turn the drums(OE Toyota from 2004) and roughed up the shoes with 120 grit paper. Still happened. Replaced the drums with new OE(me & @The Critic talked about his and he’s told me Chinese drums are iffy), and decided to replace the hardware with whatever the parts house has. Carson, made in China. Applied a smear of Permatex Purple lube to the backing plate-shoe contact points. Problem seems to be solved.
So what would be the most likely/common cause of drum brake noise - out of round/improperly machined drums or old brake shoe hardware seeing heat cycling and springs losing their temper, as a result not as “springy” as they were?
I was chasing down a rear chirping noise from the rear of a van. The brake shoes were replaced with OE Toyota shoes. Shortly after, chirping sound at low speeds and braking. I had a local machine shop turn the drums(OE Toyota from 2004) and roughed up the shoes with 120 grit paper. Still happened. Replaced the drums with new OE(me & @The Critic talked about his and he’s told me Chinese drums are iffy), and decided to replace the hardware with whatever the parts house has. Carson, made in China. Applied a smear of Permatex Purple lube to the backing plate-shoe contact points. Problem seems to be solved.
So what would be the most likely/common cause of drum brake noise - out of round/improperly machined drums or old brake shoe hardware seeing heat cycling and springs losing their temper, as a result not as “springy” as they were?