Change the angle of swash plate

[hodinhtran]

Sir,

Can u help me , I got the Pump (cat pump on excavator 225) unirotation, I dont know how change the angle of the swash plate, can you help me to have any document about the pump. I am from VietNam so, it is difficult to contact with manufacture, I need data shet or service manual or some thing like that to understand this pump. Thanks you very much

Thanks for your help.