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73-87 Chevy _ GMC Trucks => Brakes, Frame, Steering & Suspension => Brakes and Braking Systems => Topic started by: dbrister54 on November 16, 2013, 05:45:19 pm

Title: Brake problems
Post by: dbrister54 on November 16, 2013, 05:45:19 pm
Alright guys got a problem. I have a 1979 big ten and the problem is with my brakes when I hit the brake pedal hard I have brakes and it stops but if I slowly apply the brakes it goes all the way to the floor and the brakes don't engage I've change the booster but not the cylinder, is the cylinder the problem? And before u ask I did bleed the brakes. Thanks for any help
Title: Re: Brake problems
Post by: zieg85 on November 16, 2013, 05:48:11 pm
Sounds like the master cylinder to me
Title: Re: Brake problems
Post by: bd on November 16, 2013, 06:45:21 pm
X2

When you replace the M/C, bench bleed it first and then give the whole system a good flushing with fresh DOT 3/4 fluid.  Be sure to check the wheel cylinders for weeping, too.
Title: Re: Brake problems
Post by: DuckAholic1 on November 17, 2013, 01:35:38 am
What does "weeping" mean?? :-\
Title: Re: Brake problems
Post by: zieg85 on November 17, 2013, 06:13:48 am
What does "weeping" mean?? :-\

The rear wheel cylinders have moist dust boots.  When they start to weep brake dust will collect around the dust boots.
Title: Re: Brake problems
Post by: Irish_Alley on November 17, 2013, 06:26:34 am
weep=a small leak
Title: Re: Brake problems
Post by: DuckAholic1 on November 17, 2013, 04:44:01 pm
Oohh I get it!!! Silly me. I new that!! ;D :P