I have a 30 ft versalift 1995 era, when my onan generator needed a re-build i couldnt find anybody to do it. the onan ran the hydraulic pump off the engine.
to replace the 5 hp onan was like $4500, so i bought a $3000, 22hp lincoln welder/ generator to replace it.
i took the plastic cover off the end of the crankshaft & there was a 4 bolt pattern on the end of the crank, exposed.
i had a machinist make a plate & a 100% true shaft & that couples w/the hydraulic pump.
the boom runs great at idle, although at high rpm (welding) the boom runs pretty fast.
one thing, the lincoln needs a counterclockwise hydraulic pump to do this. the onan was clockwise
it is very similar to a wilkie setup.
cost me about $750 & brought a lot more to the table.
i have even brought my 250 mig & spoolgun on the road w/me. couldnt do that with the onan thats for sure.
have an onan generator for sale cheap, needs rebuild.
erik @ spectrum signs