Replaceing Crestline pan roller on a AB dick 375

[snoozer]

How big of a job is it to replace the Crestline pan roller on a AB Dick 375 ? Both ends are getting swollen and creating excess water. Just purchased the machine and am trying to sort some of the problems ,it has a T-head and did not even get into that ,it also has a crestline system. Any info would be appreciated ! Thanks