brakes massey combine model 550 western special

[WORNOUT]

have thr brake master cylinder and wheel cylinders removed from my massey 550 combine . the master cylinder is a single unit with two pistons and two
pushrods.at the out put end of cylinders are two hex nuts. this cylinder is stamped bendix.does anyone have any service information for this master
cylinder? the masssey shop manual does not have any information

 

[wore out]

What service info do you need, based on other models I have worked on they are very much like automotive master and slave cylinders, and there's all sorts of videos out there on cleaning up and honing those.

https://parts.agcocorp.com/us/en/apbsearch?q=masseyferguson/651417/l&name=550+SP+COMBINE