Brake bleeding with adjustable PV

Turn the knob full in to increase pressure to the rears.


The reason for this is because the rear calipers have poor flow and sometimes do not push enough fluid when reduced to push out any air that is trapped. That's why you want to maximize fluid pressure to maximize flow and push out air.

If the calipers are already installed and you are just bleeding fresh fluid, you don't need to touch the knob, but the fluid flow will be pretty slow.

When installing the calipers the first time, you def want max pressure. You might even need to take the calipers off, put a peice of wood inside and bleed the caliper while holding it more upright and tapping the caliper with a rubber hammer to dislodge air.