Shaky Jubalee lift

[dgray64]

The lift on the old Jubilee works for a short time then won't go up past half way, plus it gets shaky. It seems to be full of fluid. It drifts down slowly when you turn it off. Any ideas? Thanks, Dave

 

[souNdguy]

will it go full up with no load?

does it have a vane or piston pump?

the leakdown is very likely a piston oring.

the jumpy going up could be a couple things.. could be a pump and leakoff issue working against each other.. or could, for instance in a piston pump.. be bad springs / broken parts not pumping... ther's always other possibilities like bad check valves too.. leaky reliefs..e tc.. blown out orings and gaskets.

overall lift resoloution issues can be linkaf=ge adjustment and cam / cam pin issues.

top cover kit is about 15$ for soft parts.. pin is another coupl$ or you can scrounge one... do have a service manual handy before you pull it down, as you need to back off the backpressure valve unde rthe acoorn nut before pulling top cover to prevent damage.. will need to do some testing and observation.. and you will need to use the alternator adjustment procedure in the manual so you don't have to use the nuday tools..

post back with some details.

soundguy