PowerMax Hydraulics

[JeffG]

I noticed that when I pull the rear lift lever to raise rear mounted implements, it raises at a slow rate of speed. However, when I also feather the front lift lever at the same time, the rear lift raises very quickly. My question is: Has anyone else ever tried (or noticed) this or is something not quite right with my hydraulic system? Just wondering... Jeff

[Guest]

Jeff in answer to your question. Have I tried what you asked about your hydraulic system? The answer is NO! Love, Dad

[JeffG]

Let me clarify...you must have a "running" tractor to operate the hydraulics. Ha, Ha ! Jeff

[powermax_paul]

Jeff, This is due to something with the Cessna valve itself. I have noticed that when one of the spools is placed in the "float" position, it aparently ports all pressure to drain and thus the other spool will not have any pressure to "raise". What's happening in your case may be that friction in your lever/linkage or wear in your spool valve may be causing the spool you are NOT operating to be slightly cracked in the lower position and it is leaking down to float. When you feather that spool, you are closing off the leakage allowing more oil flow to go to the valve you are lifting with. I would have to see the actual spool setup and spring return mechanism to know for sure on this. So far I haven't been able to get anything out of Cessna (nor have I tried that hard). Paul