Howdy everyone. I plan to add/bleed brake fluid soon to my RV 7. (pressure fed from bleed screw at caliper) It is not clear to me how full the reservoir should be when finished. Full, not quite full, half full...?
Much obliged.
It seems that the level ALWAYS goes down, even with no leaks. Don’t know where it goes,
As the pads wear, the piston has to move farther out to make up for the wear.
The piston has no return spring, so it just stays a bit farther out and does not return to fully seated in the caliper.
This motion uses up a bit of volume that the fluid makes up.