Did a complete rear brake job on a 90 Ranger including a pair of Pronto brake drums. Here are some videos of the problem.

Wheel and tire with new brake drum. Bad wobble.


Wheel and tire installed without brake drum. No wobble.


Brake drum only. Bad wobble


Bare axle. No wobble.


So is it safe to conclude the brake drum is bad? The other side is worse. I cleaned the axle surface so its flat. Wheels and tires are new.

 

Maybe I am wrong ,,,but I think I would get my money back on those new drums Pronto !!!!!!!!!!!! LOL

 

are you sure that is the right drums? they dont look like they are all the way on....

 

For best results, always use Motorcraft drums (and rotors) and not cheapo knockoff made over in WingZong, DingFon or LongDong. There is nothing wrong with turning a genuine Motorcraft drum that will be within size spec when done.

 

I agree. Either the drum isn't installed correctly or the drum is the wrong size, not deep enough.