Yes, bleed the lines where they come out of the MC. Loosen one of the connections, have someone press on the pedal, and tighten the connection before they let the pedal return. Repeat until the air is cleared, then move on to the next connection. Then bleed the lines at the calipers as usual. You can make this easier by "bench bleeding" the MC. Basically, this is filling up the MC before you install it and plugging the flow of fluid with the connector caps that come with a new MC. This can be messy, and, if you have a used MC, you won't have the caps. But it does cut down on the amount of air in the MC that has to be flushed out.
I had to go back a couple times and bleed the MC before I got it right. The pedal was a bit mushy until I did.
Bill
I had to go back a couple times and bleed the MC before I got it right. The pedal was a bit mushy until I did.
Bill