Quote:
Originally posted by Excaliber
The two master cylinders, front and rear brakes (3 including the clutch) must have been lower than the calipers. This is considered "bad form" as air can be trapped between the caliper and the master cylinders and won't bleed properly.
Bench bleeding of the master cylinder would have been critical. Also, topping up the fluid would not have been easy (like it's "easy" with MINE under the dam fender, lol).
Ernie
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It's just the opposite.
Master cylinders lower than the calipers fill the lines from the bottom, pushing the air out the top easily.
On the other hand, when the master is high, you've got to force the air out (and down) in front of the fluid - at the same time that the air is trying to rise. Probably why all those fancy bleeding systems got invented.
The
possible problem unique (if you'll pardon the expression) to low-mounted cylinders is that, due to gravity, fluid may tend to back out of the calipers toward the master cylinders.
but only if the fluid reservoir is also lower than the calipers. Systems with low reservoirs require a residual pressure valve to keep the caliper pistons from retracting too far.