I am looking for information on a two stage pump off of my wood splitter that I need some parts for. I don't know who makes it or if parts are available. The tag has a model # 2639 and serial # V 4 G. I have pictures that I could email if anyone is willing to help.

Eric

hi from my limited experience it is most likely a double gear pump in an aluminium housing?
if it is and has done a lot of work you will most likely find it to be worn out.
take it into an hydraulic shop and they will most likely find you a replacement.