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lsett · 11-19-2018, 06:45 PM

Hello, this thread has been helpful trouble shooting but I could use some advice. I’ve got a 1966 GMC with a brake pedal that goes to the floor- no resistance. New master cylinder, proportioning valve and front brake lines. Disc in front, drums in rear. I have bled the **** out of these brakes and I have no pedal. Must be a leak somewhere, but no visible signs. I pulled the back wheel off thinking maybe it’s a bad wheel cylinder (after reading these posts). I don’t see leakage on the cylinder, but the inside of the drum is soaked. The trouble is that I can’t tell if it’s grease or brake fluid that has attracted dirt over time. The brake shoes themselves look ok wear wise. Question is- do I bite the bullet and try replacing the cylinders, shoes and hardware?

11-19-2018, 06:45 PM	#62
lsett Registered User Join Date: Aug 2017 Location: Stamford, CT Posts: 10	Re: Brake bleeding trouble... still Hello, this thread has been helpful trouble shooting but I could use some advice. I’ve got a 1966 GMC with a brake pedal that goes to the floor- no resistance. New master cylinder, proportioning valve and front brake lines. Disc in front, drums in rear. I have bled the **** out of these brakes and I have no pedal. Must be a leak somewhere, but no visible signs. I pulled the back wheel off thinking maybe it’s a bad wheel cylinder (after reading these posts). I don’t see leakage on the cylinder, but the inside of the drum is soaked. The trouble is that I can’t tell if it’s grease or brake fluid that has attracted dirt over time. The brake shoes themselves look ok wear wise. Question is- do I bite the bullet and try replacing the cylinders, shoes and hardware? Last edited by lsett; 11-20-2018 at 07:56 AM.