Brakes are holding all the time?? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

72futuresweet2wd · 05-15-2002, 01:58 PM

My truck has went through a hold lot of problems trying to get the front disc/power brake conversion. But Now that I have drove it a few times all of a sudden the brakes are sticking on(as if they were applied). Originally I thought it could just be a caliper problem but it is both fronts(or all four sticking)WTF? Does anyone have any suggestions on how to resolve this problem?

Thanks for any help.

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1972 2wd Blazer (Project)
1969 Chevy C10 (Driver) http://community.webshots.com/user/69chevytruck
2002 Chevy Trailblazer (Wifes)

tom hand · 05-15-2002, 02:29 PM

I had that problem one time, it like to drove me crazy. I could actaully open the bleeder screws and let the pressure off and the next time I applied the brakes they would drag. Well after days of scratching my head I replaced the master cylinder even tho it was new. That was it, the new master cylinder was defective.

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72 GMC Sierra SWB almost finished---- 84 Softail
Olive Branch MS

bigvinnie · 05-15-2002, 02:33 PM

had the same problem.... bad master cylinder was holding pressure.

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'72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA
http://www.ixpres.com/vlusardi/chevtrk.htm

**68 Stepside** · 05-15-2002, 02:40 PM

Is it a parts store reman. master cylinder? They're notorious for being junk out of the box. That's the first thing I'd look at.

TJ

busterwivell · 05-15-2002, 03:21 PM

Make sure that you specify Mastercylinder for disc/drum and not drum/drum or you will have that very problem every time.

dross · 05-15-2002, 03:53 PM

Watch your brake pedal, I had a blazer give to me last year that did that. When I replace the master cylinder it still would lock up. then I happened to watch the pedal and it would acually pull down toward the floor when you'd start the truck. replaced the booster and that was the end of the problem.

72futuresweet2wd · 05-15-2002, 04:21 PM

Thanks for the response I am not sure about why but we readjusted the rod from the pedal to the booster. That solved the problem this was actually the third master cyclinder since beginning the brake job so I hope it was just an adjustment problem.

05-15-2002, 01:58 PM	#1
72futuresweet2wd The face of my 69 c10 Join Date: Jan 2001 Location: Central Indiana Posts: 171	Brakes are holding all the time?? My truck has went through a hold lot of problems trying to get the front disc/power brake conversion. But Now that I have drove it a few times all of a sudden the brakes are sticking on(as if they were applied). Originally I thought it could just be a caliper problem but it is both fronts(or all four sticking)WTF? Does anyone have any suggestions on how to resolve this problem? Thanks for any help. ------------------ 1972 2wd Blazer (Project) 1969 Chevy C10 (Driver) http://community.webshots.com/user/69chevytruck 2002 Chevy Trailblazer (Wifes) __________________ 2002 Harley Davidson VRod 1972 2wd Blazer (Project) 1969 Chevy C10 (Driver) 2002 Chevy Trailblazer (Wifes)

05-15-2002, 02:29 PM	#2
tom hand CCRider Join Date: Feb 2000 Location: Olive Branch,MS,USA Posts: 2,232	I had that problem one time, it like to drove me crazy. I could actaully open the bleeder screws and let the pressure off and the next time I applied the brakes they would drag. Well after days of scratching my head I replaced the master cylinder even tho it was new. That was it, the new master cylinder was defective. ------------------ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS __________________ 72 GMC Sierra SWB almost finished---- 84 Softail Olive Branch MS

05-15-2002, 02:33 PM	#3
bigvinnie Registered User Join Date: Aug 2001 Location: escondido, ca 92026 Posts: 1,222	had the same problem.... bad master cylinder was holding pressure. ------------------ '72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA http://www.ixpres.com/vlusardi/chevtrk.htm __________________ '72 short step, 350, 700R4, tilt, ps, pdb, a/c, lowered coils, etc., other work in progress... San Diego, CA 72 Stepside Project

05-15-2002, 02:40 PM	#4
68 Stepside huh? Join Date: May 2000 Location: Washington, Illinois Posts: 5,690	Is it a parts store reman. master cylinder? They're notorious for being junk out of the box. That's the first thing I'd look at. TJ __________________ Someday when I'm lonely, Wishing you weren't so far away, Then I will remember Things we said today. RIP El Jay

05-15-2002, 03:21 PM	#5
busterwivell Registered User Join Date: Jan 2002 Location: Sahuarita, AZ USA Posts: 2,033	Make sure that you specify Mastercylinder for disc/drum and not drum/drum or you will have that very problem every time. __________________ Bill - Tucson, AZ 47 Chevrolet 2 dr sedan 56 Chevrolet 210 2 dr sedan 66 Chevrolet Malibu 2 dr 4 speed 71 Chevrolet C30 Longhorn 86 Chevrolet Monte Carlo SS (Sold) 01 Chevrolet Tahoe IM - BUSTERWIVE@aol.com

05-15-2002, 03:53 PM	#6
dross Registered User Join Date: Jul 2001 Location: prophetstown,IL. Posts: 40	Watch your brake pedal, I had a blazer give to me last year that did that. When I replace the master cylinder it still would lock up. then I happened to watch the pedal and it would acually pull down toward the floor when you'd start the truck. replaced the booster and that was the end of the problem. __________________ Prophetstown, IL. The ark was built by amatures the titanic by professionals

05-15-2002, 04:21 PM	#7
72futuresweet2wd The face of my 69 c10 Join Date: Jan 2001 Location: Central Indiana Posts: 171	Thanks for the response I am not sure about why but we readjusted the rod from the pedal to the booster. That solved the problem this was actually the third master cyclinder since beginning the brake job so I hope it was just an adjustment problem. __________________ 2002 Harley Davidson VRod 1972 2wd Blazer (Project) 1969 Chevy C10 (Driver) 2002 Chevy Trailblazer (Wifes)



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