Brake problem help. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

norville · 10-18-2004, 06:35 AM

Hey folks,

Checked the searches but I want to confirm.. With the vehicle running , if I depress the brake I get an 1" or 2" of slight resistance with a whoosh. Then a very hard brake and little stopping ability. If the vehicle is off I seem to have little change . An 1" or 2" travle then very hard brake. Now I'm thinking the power brake booster, but even after a few day's I still have vaccume when I try to remove the vac hose from the booster. C

Could the check valve be bad?? The vehicle seems to run OK after inital startup, So no huge vac leak. Anything else I should look for?

Thanks for the help.

norville

68C15 · 10-18-2004, 07:26 AM

you hit the nail on the head there. bad valving inside the booster. time for a new one. check with GMC Paul's. he is a board member & we like to support our friends.
I would post a link but I am a moron & feel lucky to be able to tun on the thingy that kind of looks like a TV. if the wife turns off the rectangular box under the desk I have to wait for her to help me.

norville · 10-18-2004, 07:57 AM

Thanks,

I can't find the listing ## or price, on GMC pauls

norv

68C15 · 10-18-2004, 09:17 AM

try sending him a PM or get a hold of Wes @ classic heartbeat. he is a frequent here also.
I have another option but it involves a lot of fabrication of later model booster & grafting 2 brake pedals together

10-18-2004, 06:35 AM	#1
norville Senior Member Join Date: Jun 2004 Location: Mountain Top, Pa Posts: 323	Brake problem help. Hey folks, Checked the searches but I want to confirm.. With the vehicle running , if I depress the brake I get an 1" or 2" of slight resistance with a whoosh. Then a very hard brake and little stopping ability. If the vehicle is off I seem to have little change . An 1" or 2" travle then very hard brake. Now I'm thinking the power brake booster, but even after a few day's I still have vaccume when I try to remove the vac hose from the booster. C Could the check valve be bad?? The vehicle seems to run OK after inital startup, So no huge vac leak. Anything else I should look for? Thanks for the help. norville __________________ 1986 C10 Scottsdale 5.3, TH400

10-18-2004, 07:26 AM	#2
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	you hit the nail on the head there. bad valving inside the booster. time for a new one. check with GMC Paul's. he is a board member & we like to support our friends. I would post a link but I am a moron & feel lucky to be able to tun on the thingy that kind of looks like a TV. if the wife turns off the rectangular box under the desk I have to wait for her to help me. __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card

10-18-2004, 07:57 AM	#3
norville Senior Member Join Date: Jun 2004 Location: Mountain Top, Pa Posts: 323	Thanks, I can't find the listing ## or price, on GMC pauls norv __________________ 1986 C10 Scottsdale 5.3, TH400

10-18-2004, 09:17 AM	#4
68C15 blood type; Retumbo Join Date: Jan 2004 Location: next to my reloading bench Posts: 10,269	try sending him a PM or get a hold of Wes @ classic heartbeat. he is a frequent here also. I have another option but it involves a lot of fabrication of later model booster & grafting 2 brake pedals together __________________ Man rule #77...if you own a 67 stepside with a caddy 472 you will never be in danger of loosing you man card



Register or Log In To remove these advertisements.

Register or Log In To remove these advertisements.