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05-13-2008, 08:14 PM | #1 |
Registered User
Join Date: Aug 2006
Location: HARRISON AR.
Posts: 309
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Brake Calipers Sticking
I Thought I Would Pass This Tidbit Along.
When I Built Coppertone I Used A New Booster,rebuilt M/cyl,calipers And Slave Cyls. New Rotors/drums And Hardware Kits On The Rear. I Replaced Any Lines That Werent Perfect. Anyway When I Started Driving It My Calipers Would Start Dragging. I Would Have To Release A Bleeder Screw To Free Them. So I Thought I Had A Bad Caliper. On Goes 2 New Calipers. Same Problem.so Now Im Thinking Proportioning Valve Since Thats All That I Reused.pulled One From A 2 Wd That I Know Was Good. Had To Replace Master Cyl To Get Brake Lines To Match Up. Anyway After Another $100.00 Or So Im Back Togather. First Drive Ok Then On A Longer Trip Found That My Problem Has Moved To The Rear Brakes. Now Im Really Scratching My Head. I Posed This On This Site And Didnt Get Anywhere, I Asked Everyone I Came In Contact With. Finally An Old Dozer Mechanic Came In One Saterday And Was Admiring My Truck. I Told Him About The Problem He Said My Push Rod Was Too Long. He Said To Grine Some Off And It Will Let The Fluid Return Into The Master Cyl. Instead Of Grunding I Installed 2 Fibre Washers To Space The Cyl From The Booster Because With My Luck I Would Grind It Too Short. Anyway This Fixed The Problem. 2, 3cent Washers And 10 Minutes Fixed This Head Scratcher. Hope This Helps Someone Someday. Marvin
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72 2wd lwb cheyenne super youngest son.green/white 72 2wd lwb cheyenne super oldest son.green/white 71 4wd 3/4 cheyenne super frame off manderin copper / white 4 inch lift. FINALLY DONE / SOLD 72 4WD SWB CHEYENNE BLUE/WHITE 388 AUTO REMEMBER THE COPS NEVER THINK ITS AS FUNNY AS YOU DO. NORWOOD SURVIVOR COPPERTONE BUILD THREAD/ http://www.67-72chevytrucks.com/vboa...d.php?t=259856 |
05-13-2008, 10:01 PM | #2 |
Back in the sticks
Join Date: Jan 2001
Location: Fordland, MO
Posts: 3,188
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Re: Brake Calipers Sticking
Good to know, Thanks for posting it. I'm sure someone will use the info.
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1971 Cheyenne C-10 w/700R4 and Tuned Port Injection 1969 K5 Blazer w/Tuned Port 2010 2SS/RS Flaming Orange Camaro 2011 K1500 Suburban 2014 K1500 Pickup 2008 Nissan Altima? The wifes' hoopty |
05-13-2008, 10:24 PM | #3 |
Registered User
Join Date: Jan 2008
Location: Chesapeake Beach, MD
Posts: 812
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Re: Brake Calipers Sticking
man i had this problem about 6years ago and could never figure out what was wrong i spent more money on trying to figure out what was wrong then the truck was worth
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71 cheyenne lwb 300rwhp best 1/4 time so far 12.8 @103 http://i195.photobucket.com/albums/z...en58/001-2.jpg |
05-13-2008, 10:29 PM | #4 |
Senior Member
Join Date: Apr 2008
Location: Franklinton NC
Posts: 1,309
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Re: Brake Calipers Sticking
Sorry I didnt see this sooner I could have saved you some trouble.The first time I saw this I chased it a while.
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05-13-2008, 10:38 PM | #5 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Re: Brake Calipers Sticking
steelhorse... you took the EXACT words out of my mouth. I knew what it was with mine when i had this issue though, becouse I had just replaced my master cylinder and it came with insturctions and it mentioned this.
However, you shouldn't have had to grind on anything... the pushrod is adjustable. |
06-16-2008, 06:31 AM | #6 |
Registered User
Join Date: Dec 2006
Location: NE Penna.
Posts: 13
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Re: Brake Calipers Sticking
Thank you for steering me in the right direction. I had the same problem with my brakes staying on. I thought it was only the fronts so I replaced the front calipers thinking they had frozen with no help. I tried shimming the booster and adjusting the rod with no fix from what I read from this thread. To make a long story short it ended up being a double seal between the master cylinder and the booster. A cup shaped seal supplied with the master cylinder and a flat seal provided by my newly rebuild and plated booster. There is room for only one seal not both therefore this kept the brake fluid from returing to the master cylinder. Thanks again for your help. I was looking toward the proportioning valve as my problem also.
Last edited by cljimmy72; 06-16-2008 at 06:32 AM. |
06-16-2008, 07:07 AM | #7 | |
Sierra Grande Club
Join Date: Jan 2007
Location: New Mexico USA
Posts: 2,433
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Re: Brake Calipers Sticking
Quote:
AH619- Can you try adjusting the rod on your break peddle and see if thats also fixes your problem? When you mentioned rod thats what came to my mind. Glad to hear you got this figured out none the less. s/t
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1971 GMC Sierra Grande, 1/2 ton short wide, original 4 bolt 010 020 block & heads. (matching #'s). 383 stroker, SMI q jet 750 cfm, Lunati Voodoo 60102 cam, Scorpion roller rockers, Spin Tech pro street mufflers with X pipe. |
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06-16-2008, 03:53 PM | #8 |
That's right, it's Copper!!
Join Date: May 2007
Location: Bakersfield, Central California
Posts: 558
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Re: Brake Calipers Sticking
I just had the same issue, small world!
http://67-72chevytrucks.com/vboard/s...d.php?t=294877 Last edited by fastom; 06-16-2008 at 03:53 PM. |
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