Help bleeding a Hydra Lift 2007-126 2-post lift!

[Cody27]

Hello, I just installed a Hydra Lift 2007-126 2-post 7k asymmetric lift and I am trying to figure out how to bleed/syncronize it. I bought it used without a manual or instructions and I'm having trouble finding anything online.

This lift does not have bleeding screws on top of the cylinders. This lift does not use synchronizing cables or chains. It only has 2 lift cylinders and one hydraulic line going from the motor side to the other side cylinder.

I have it up and running and one side goes up first. I started out about 7.5 inches higher on the side that lifts first and after multiple times up and down I have it about 2 inches different now. I can't figure out how to actually bleed it but it seems to be getting better each time.

Is there a special way to bleed it? No bleeder screws and no cables to adjust. I'm stumped!

 

[lowrollin70gmc]

I have 2 ideas:

When you run the lift up, are you going all the way up and letting both cylinders reach their max? When installing new cylinders and bleeding most hydraulic systems I try and get the cylinders as full as possible then retract (so all the way up then all the way down) to help remove as much air as possible.

Have you put any weight on the lift? Obviously not far off the ground, but letting it unload the suspension of a car (maybe lift it an inch off the ground) a couple times might help synch both cylinders.

 

[Mr_fixit]

I can't help. My hydralift has one cylinder.

 

[pepi]

Most likely there is not anything special about the lift. Look around the web, find one that looks the same, check out the manual for it. HYD lifts are pretty straight forward.

 

[Cody27]

I have 2 ideas:

When you run the lift up, are you going all the way up and letting both cylinders reach their max? When installing new cylinders and bleeding most hydraulic systems I try and get the cylinders as full as possible then retract (so all the way up then all the way down) to help remove as much air as possible.

Have you put any weight on the lift? Obviously not far off the ground, but letting it unload the suspension of a car (maybe lift it an inch off the ground) a couple times might help synch both cylinders.

I did run it all the way up, one cylinder maxed out and one stopped short and wouldn't go up all the way. Its getting better and I did lift a car, it seemed to lift a little lower on one side but almost catch up or get more even while lifting.. im thinking just some air in the system as it worked fine before I took it down

 

[Cody27]

Most likely there is not anything special about the lift. Look around the web, find one that looks the same, check out the manual for it. HYD lifts are pretty straight forward.

Thats what I thought.. i haven't found another lift the same. A lot of older lifts use one cylinder and a chain to the other side. Most newer lifts use cables to synchronize and have bleeders on top of the cylinders. Ive learned hydro lift (while they were in business) promotes their design as "twin hydraulic" and auto synchronizing. They are out of business now but I am waiting to head back from them as they still have customer service number and email.

 

[matt_i]

Seems like it would be impossible without a bleeder.

Are you looking on top of the cylinder end-cap? The bleeder would have to be part of the piston-rod assembly for the fluid passage to connect to the underside of the piston. Space above the piston is just air on a single-acting vertical cylinder.