Normally you just run your cylinders (loader,steer ect) through their range of movement. The amount of air left in them is minimal. Are you sure there is not a leak in the pickup tube or suction hose...
Firstly you need reservoir for hydraulic oil from there goes one line to inlet port of hydraulic pump (which is driven by a engine or electric motor) then the high pressure port from hydraulic pump...
This all depends on which tractor you're on at the time.
The older Fords 8N's - Jubilee's - etc. had a dip stick on the side of the transmission.
Alot of the older International's - you needed to...
The best thing to do is to check your car's manufacturer recommendations. Some tell you to simply turn the tires side to side and others will tell you to use a special "bleeding" routine and maybe a...
Should self bleed or try turning wheel from full right to left several times until system works air out.you may have to loosen line while running to force air out but I would recomend a manual before...