Not entirely sure what I'm doing here

Got my MF 880 plow assembled but not entirely sure how to get trip legs bled and operational. I have posted a few pictures of the accumulator and hydrolic hose. Am I correct in saying I need to connect the hose to the tractor, put the plow down and trip all 6 bottoms then bring them up again with the tractor hydolics and repeat this a few time to get all air out of the system (plow was completely dismantled for shipping). Once I have this done do I keep the hydrolics from the tractor connected up then open the valve from the accumulator. Does the accumulator then accomodate the plow legs triping? How do I adjust the pressure on the accumulator? Pulling the plow with a MF 1155. Thanks for the help
Bill

You should also put your request over on the MH/MF and Implement forum. You will get more responses there. Hal

I will attempt a little assistance- it's been several decades!
I was never involved in initial assembly so I don't know about bleeding.
I did service a couple of Oliver plows with the same accumulator. With the system hooked to the tractor, if I remember correctly, you move the lever to send oil into the system, watching the gauge carefully, it will rise quickly, then hesitate briefly, before continuing it's rise. That point tells you how much nitrogen pressure is in the tank. You can repeat that process as many times as necessary to get the reading. I don't remember how far beyond gas pressure you set the hydraulic pressure. Seems like there was a little wiggle room, but basically the gas pressure is the key to the system. The system is self operating- totally unhooked from the tractor during operation.
Of course with the proper equipment you can read the gas pressure at the schrader valve. Here you can take the accumulator to a welding supply place and they will charge it with nitrogen. There are more and more accumulators being used today so possibly dealers are charging them also.
Hopefully someone with much more thorough and recent experience will respond.
Best of luck.

That accumulator Is the exact same one that Case used on the 3300 and 8300 series plows. The Nitrogen precharge should be 1250# Check this first, If the charge is low the blatter will collapse, and when you apply hydraulic pressure from the tractor and the system will be deadheaded. Your pressure from the tractor should be about 1500# and then shut the valve off to isolate the system from the tractor. These were Case Specs. MF could be a little diff. Bob has told you where you can get the accumulator precharged.