I would plumb the return line into the bottom of the reservoir, ( tee at the drain plug) that would eliminate some of the air on the return side. The reservoir should be full when all the air is bled from the system and all four cylinders are in the retracted position, this would be the "at rest" full level of the reservoir. The present reservoir MAY not have enough capacity to fill all four cylinders, this would cause the pump to suck air once it has used all the fluid present in the reservoir to lift the attachments, an auxillary reservoir ( tank) may be necessary to keep the pump supplied with enough fluid.
Since you state this is a Stage II Super, I assume it came equipped with the pump & lines plumbed from the factory. If not I would check the pump operating direction to be sure the supply (big hose) & pressure (small hose) lines are not crossed at the pump.
Do not mean to offend, ( been there done that), it's hard for me to tell from the pics but it looks like yours are plumbed correctly, so no problems there.
Try to plumb the return line from the valves from a lot lower point to the reservoir, try a more direct route, air will be trapped at the highest point you have you lines plumbed, fashion an air bleeder at the highest point of your hoses, then install a plug when you have all the air bled from the system.
You have a lot of pipe & plumbing there to get all the air out of, I beleive the reservoir is going dry before the pump can fill all the routing of valves hoses & pipe and expel the air.
This post was edited by rhtx55 at 18:28:22 10/05/11 2 times.
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