Les Schwab. Well, maybe. Im wearing a hat thats older than the average schwabby so take it with a grain of salt.
If you are pretty sure its a rear problem, take a look at your backing plates. The shoe frames dig deep grooves into the plate and make them hang in wierd ways which will wreck the drums real quick.
Even the best shoes often have nasty burrs on the frame which can cause the same problem.
They hang and pulse untill you give em a pump and the springs pull them loose.
The backing plates are pretty thick on these trucks. Weld em and grind em in place.
Just take your time, dont melt the axle seals
If you are pretty sure its a rear problem, take a look at your backing plates. The shoe frames dig deep grooves into the plate and make them hang in wierd ways which will wreck the drums real quick.
Even the best shoes often have nasty burrs on the frame which can cause the same problem.
They hang and pulse untill you give em a pump and the springs pull them loose.
The backing plates are pretty thick on these trucks. Weld em and grind em in place.
Just take your time, dont melt the axle seals