JD310C - hydraulic pump identification

Any documentation available regarding the type of hydraulic pump in a 310C. Based on my manuals and s/n 753+ I'm able to determine its a Sundstrand Sauer pump with attached steering pump. I wasn't able to gather any additional information in my manuals or the web. I understand more information is stamped on the pump but i was hoping to do research before I have to dismantle...there has to be more info available....any help would be appreciated.

JD310C - hydraulic pump identification