92GMCK2500
I'm Awesome
Problem:
Loud scraping noise coming from rear brakes under moderate braking. Noise is worse on pass/right side. I touched the drums and rims when i got home to see what was going on, they were too hot to touch after driving for an hour, like real hot! Not good.
Conditions:
Usually under load/force, going downhill with the camper loaded up, #9000 of weight coming to a stop. Seems random, happens 70% of the time. Not so much when braking light or heavy. Noise only started after driving 50kms distance.
Info:
11" drums, duo servo, recently rebuilt, including all new hardware, wheel cylinders, shoes, drums, SS brakes lines. I've also replaced the wheel bearings, seals and axle shaft C clips.
I re-used the original backing plates, sanded down the shoe contact points smooth again as they had gouged out real bad.
Adjusted brakes following GM service manual including reversing the truck back and forth a dozen times to active the self adjusters. I've greased shoe contact points.
Suspicions:
1. Drum and backing plate scraping somehow? Not square or 'true' to each other.
2. Backing plate issue, shoe contact points sanded down too much, now causing poor shoe to drum contact?
3. Over adjusted brakes, too tight? Shoes dragging? Hence heat. But why noise?
I am real stumped on this one, been chasing the problem for awhile now.
Any ideas??
Guess it might be the case of going back through everything again to double check my work. Cheers
Loud scraping noise coming from rear brakes under moderate braking. Noise is worse on pass/right side. I touched the drums and rims when i got home to see what was going on, they were too hot to touch after driving for an hour, like real hot! Not good.
Conditions:
Usually under load/force, going downhill with the camper loaded up, #9000 of weight coming to a stop. Seems random, happens 70% of the time. Not so much when braking light or heavy. Noise only started after driving 50kms distance.
Info:
11" drums, duo servo, recently rebuilt, including all new hardware, wheel cylinders, shoes, drums, SS brakes lines. I've also replaced the wheel bearings, seals and axle shaft C clips.
I re-used the original backing plates, sanded down the shoe contact points smooth again as they had gouged out real bad.
Adjusted brakes following GM service manual including reversing the truck back and forth a dozen times to active the self adjusters. I've greased shoe contact points.
Suspicions:
1. Drum and backing plate scraping somehow? Not square or 'true' to each other.
2. Backing plate issue, shoe contact points sanded down too much, now causing poor shoe to drum contact?
3. Over adjusted brakes, too tight? Shoes dragging? Hence heat. But why noise?
I am real stumped on this one, been chasing the problem for awhile now.
Any ideas??
Guess it might be the case of going back through everything again to double check my work. Cheers