Reply to "Brake pedal"

bosswrenchMember

Your brake pedal height growth is undoubtably caused by the rod between the power brake diaphragm and the brake master cylinder being slightly too long. This causes a little mismatch with the bleed-back port in the master and consequent caliper drag. The caliper drag heats up the brakes and fluid, and you detect this by the pedal moving up. In really bad cases, the pedal travel will top out under your dash, the calipers will lock and you'll be alongside the road until things cool down. Do not ask how I know this! To fix: with the brakes stone-cold, unbolt the master cylinder from the power unit. Note if the master cylinder springs out a bit when unbolted, or stays absolutely flat against the power unit. This distance is what you must trim from the loose rod inside, maintaining the rod's rounded end profile. Or, a pair of washers the exact right thickness between the power unit and master cylinder (around the studs) will also work.

6/6/0111:42 AM

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