porta mill
ArboristSite Operative
I have an older van with a versa lift aerial lift somewhere around 29 ft reach . The hydraulic pump is run off the van engine (351 Windsor) not very fuel efficient . I do a little tree trimming but the main use is odd side jobs replacing windows installing siding. The pump is leaking hydraulic oil very bad . so my plan to use a 5Hp gas engine and run a new pump with the gas engine. Here is where I need help how many gpm do I need and how much psi do I need . the existing pump is a Gresen hydraulics S/n # is J78 I looked all over the net to find the specs but no luck . any help would be great.
