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Well in the original system the hand pump will only pass fluid when you pump it. If fluid wasn’t returning to the hand pump, that sounds like a clogged return path that forced all returning fluid to the AOP. bleeding is fairly simple, lower the cab fully, disconnect the base end hose, place it...

Yea but that is just the opposite scenario. Lowering the tire is like lowering the cab, it only takes a little fluid to get the tire or cab over the balance point… When raising the cab, the cab passes the balance point and finishes extending the rod end fully. This pushes that fluid back to...

Or you could partially restore the added volume of the original 2 reservoir system. Reconnect the line on the manifold valve circled in green to the bottom of a vented reservoir, and replace the vent on the pump with a sealed plug… also, you need to make sure you get all the air pockets out of...

well you said after it burps a time o two, it wont have enough fluid to raise the cab again right? Since the reservoir is at least 5oz smaller than what the cylinder and latch require, I suspect it is ingesting some air very near the top where you don't need much force anyway as you empty the...

You can add more storage… remove your vented plug and install a hose barb. connect a hose and run that to the bottom of a second small tank/container. You could form one from pipe and fittings, you only need a few oz, and re-install that vent plug on top of the added tank/reservoir. This will...

Well that reservoir isn’t large enough to take the 24+ oz from the cylinder base(and that returning from the latch cylinder), and by pumping when lowering, you are using the rod end of the cylinder as aux storage…

and with the AOP lines capped, and it the only pump in he system, it would have to be vented... back to the basic premise, this system takes X amount of fluid(the number is in my notes at home) to lift the cab. what is the volume of that pump? It takes 24oz to lift the cab, with only a small...

the cab latch is never really under vacuum... There should be no possibility of overflow on the hand pump as it has no vent to overflow as built to this diagram. it has a plug9shown on diagram) The system vent is in the air-op pump reservoir... So when fluid returns, it should flow to the...

In the end, if you send 10oz to the cylinder to lift the cab, you should get that same 10oz back. The little bit of fluid you send to the rod end to get back over the balance point when lowering should be forced back on the next raise. The checkvalves should be of no consequence if the lines to...

the hand pump is not supposed to be vented on the OEM system, by design it must be completely sealed with a plug and the vent is at the Air-op pump... you may need to do some plumbing alterations as I do not believe the return side is able to draw fluid from the hand pump reservoir on the OEM...