gpm on pto hydraulic pump

[vnolen]

I am trying to find out the gpm on a pto hydraulic pump for vacuum seed meters. It's a 1000 rpm pump, model # BH78873 made for JD. I'm waiting for info from them about the manufacturer. Has anyone installed this on a 4640 and could give me any info?

 

[lwalsh]

5gpm at 80% of rated speed per deere manual. Google the part no.

 

[vnolen]

Thanks for that info. I did find out JD makes 3 different size pumps for their 4640. Depending on what I have it may get me the extra that i need with this add on.