Our Grove MZ-50 Manlift has a hydraulic control problem Could be the Pilot Valve ANYONE ... have a spare Parker 234912-23D Pilot Valve ???????????????
There's a couple listings on Ebay if that helps. Not cheap I see. This place claims to repair them: http://www.fluidpowershop.com/parker-234912-23d-servo-valve.html Hope you get it working.
Thanks I just bought one one Ebay (!!! I can't believe the price !!!) I will see what they will charge to repair the other one. Appreciate your help Dave