No, that isn't exactly correct. The air in the cylinders will bleed past the internal seals when they are filled with high pressure oil. Just hook them up with the cylinders empty of oil, then run the bucket full curl and hold for a count of 3, then full dump and hold for a count of 3. Do that 3 times. At this point, I like to shut the machine down for 5 minutes so the air bubbles in the oil sump can go away. After that 5 minutes, check the oil level and top off as needed. You will have all the air out.
jb