Ryan's M3 medium

[tankbarrell]

Unless the tracks have been changed to a non-original type, all of the Grant and Sherman track, whether rubber faced or steel use pins with rubber doughnuts pressed into the links. Therefore, they cannot seize as they do not move beyond the rubber limit to start with and if you soak them in diesel, it will eventyally destroy the rubber.

If it is original style track, it is likely the brakes are stuck.