Quote:
Originally Posted by j cAT
when pads/and or rotor/drums are excessively worn the amount of brake fluid in the pistons is much larger in volume...this now creates a softer pedal as the fluid needs to be compressed more to create the braking pressure.
when I had to brake very large transportation vehicles I used a pressure supplied bleed machine. the guages told this story quite well.
these toy trucks/vehicles weigh 5,ooolbs..when you bleed brakes for 50,000lbs you must not make stupid mistakes and ignore worn braking componets.
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Brake fluid compresses about 1-2% at the most and it is greater at high temperatures, so in all reality you won't notice much at the pedal. Maybe 1/2" to 3/4 at high temperatures.
Don't those very large transportation vehicles use air brakes?