Help Identify

[Snowjob]

Guys, I need a hand.... I took this off a dump truck that ran a shaft off the pto to this tank with a pump in it. Any idea where I can get some info on this? I looked pretty close and couldn't see any numbers or name plates.
Thanks

snowjob

 

[MossRoad]

I take it that's the pump and reservoir for the single action dump cylinder?

If there's no markings on it, I'd start with the make and model of the dump truck just in case its a factory pump, perhaps? :confused3: