There are multiple ways to bleed a system, almost like talking tires. I have the vacuum pump and a pressure system along with bottles and hoses. Yet I usually use the old pump em and bleed em way. When explaining to someone not familiar with it I always go back to the old way, no special tools needed and since it can be done out on the road everyone needs to know how. By understanding the hydraulic system I've never found one I couldn't get bled. The Goldwing I mentioned, I bled the new slave for 5 minutes with little pressure which told me I needed to go high. Bled the banjo 3 times and presto she had pressure. Back to the slave and cracked it twice more and brakes are good.