I have 1998 Genie Z45/22 Ser# Z-45-007917. I purchased the lift several months ago and it had been working fine. Then all of a sudden I got stuck up in the air and had to be let down on auxiliary power. Ever since that occurrence the primary and secondary booms will not raise from either the platform or the ground box. Everything else is working fine. I am suspecting it is a hydraulic issue, but I am not certain how to check the pressures. I have a Service Manual, but it is pretty vague on the description and it does not have photos to help me out. I would appreciate any help!
As an update to the problem with the 45/22, I have checked the pressure on the lift pump and it is well over 3000psi. I haven't discovered anything else as of yet. Still need suggestions... Thanks