Wrecker rear drag winch brake drum

[MAZ537]

Hello guys,

I have six 45k rear winches for rebuild ,all the brake drums are badly pitted , I have clean one on a lathe but I have to remove at least 2mm from it to have a nice smooth surface.The wear limit is very tight on these (from 5.503" to 5.497")...So can I still use them ?
Thank you!

 

[gimpyrobb]

Worst comes to worst, make a sleeve for it. Make it small enough to have an interference fit(heat it up to install) or plug weld it and machine flat.

 

[MAZ537]

Worst comes to worst, make a sleeve for it. Make it small enough to have an interference fit(heat it up to install) or plug weld it and machine flat.

This sounds good , but the brake drum is cast iron and I do not know if the sleeve is doable ?
These things are almost impossible to find !!!