The brake shoes have worn into the drum leaving a ridge. Unbolt the hydraulic cylinder and possibly the square adjuster housing. The drum should come away with
I have been trying to free up and remove the brake drum from a 48 rear end . I punched the wheel bolts thru and removed the bolt that went thru the drumtothe
Sorry Bill, just been made redundant from work, finish in 2 days. Been busy trying to organise something else! No luck, so I will have plenty of time next