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Brakes are NOT fixed.....pedal still soft!! What next...? 200 1985

posted by  ANDO on  Fri Mar 15 23:22 CST 2002
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I have been following this saga since the beginning and must admit I couldn't offer a suggestion until I read your latest post where you mentioned the pedal becoming hard near the floor.

I once bought a Valiant which displayed the same symtoms, pedal almost to the floor before any braking occurred. The previous owner had the front calipers and rear wheel cylinders "overhauled" by a "professional" brake shop before he sold it.

After a week of investigation including a MC rebuild and continuous bleeding, I discovered the caliper pistons were sticking in the seals, in other words the pistons were not sliding through the seals to take up excessive clearance between the pistons and the pads. The result was the MC had to move a lot of fluid before the pistons finally contacted the pads. When the pedal was released the distorted seals pulled the pistons too far back again. The fix was to disassemble the calipers and lubricate the pistons and seals with brake grease. Problem solved !

I would take a close look at those front calipers, I have rebuilt a lot of 144 and 244 calipers and have NEVER had a problem bleeding the brakes.

Good luck






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