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| | | | Joined: Dec 2005 Posts: 1,026 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 1,026 | Ok , I need a little help here. I have disc's on all four corners & a firewall mounted booster/proportioning valve. Problem is the front brakes are sticking. Bled the brakes last week and have good pedal pressure but the front brakes don't seem to be disengaging. Any ideas?
Robert C. If it's true what they say, "You learn from your mistakes," I'm a Genius in the making. 1950 3600 | | | | | Joined: May 2006 Posts: 8,351 'Bolter | | 'Bolter Joined: May 2006 Posts: 8,351 | First thought would be faulty or kinked hoses. Try pushing the piston back into its bore. it should go in with very little force. If it doesn't, loosen the bleeder. If it goes in free, then the hoses are the culprit.
Bill Burmeister
| | | | | Joined: Mar 2004 Posts: 3,068 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 3,068 | Could have the brake pedal rod adjusted up too tight,
Scott | | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | Could have the brake pedal rod adjusted up too tight,
Scott Robert, I saw your post in the ADTruckers(HAMB), I agree with Scott on this one too! An over-adjusted pushrod will retain pressure to the front brakes,being the first circuit to activate,resulting in overheating and subsequent expansion/binding. You also don't want to boil your brake fluid. 
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Nov 2006 Posts: 677 Shop Shark | | Shop Shark Joined: Nov 2006 Posts: 677 | Could have the brake pedal rod adjusted up too tight,
Scott Robert, I saw your post in the ADTruckers(HAMB), I agree with Scott on this one too! An over-adjusted pushrod will retain pressure to the front brakes,being the first circuit to activate,resulting in overheating and subsequent expansion/binding. You also don't want to boil your brake fluid. I agree with they said ! Im "still" having problems with mine Robert ! Im coming up with something better as we speak. "Thats the third lil goofy chrome booster in a year and a half" It's getting a little better but they are still giving me trouble. But... Im sure getting better at pulling that master cylinder... (keep the wrench's in my glove box) Keep us informed on what you came up with ! Todd
Some people are like Slinkies, Their not really good for nothing... But they still bring a smile to your face when you push them down the stairs. 1951 3100 350 TBI Gallery Toddzilla... "$old" | | | | | Joined: Dec 2005 Posts: 1,026 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 1,026 | I don't think it's the M/C. It did the same thing last year when I had it running briefly. All components were new, including the hoses and calipers. It has sat up however for a number of years as I piddled with it. As I mentioned before I just swapped out the M/C recently. It's the same style but it came with a proportioning valve. I think the calipers have gone bad from sitting so long. Just bought a set to install but got side tracked by my dog. He got out of the yard yesterday morning and was missing all day. He came back home that evening and was is awful shape. Looks like he was attacked by a pit or two. There are huge chunks missing from all four legs with his back legs being the worst. His face is all torn up as well. Gotta play doc for awhile.
Robert C. If it's true what they say, "You learn from your mistakes," I'm a Genius in the making. 1950 3600 | | | | | Joined: Mar 2008 Posts: 3,750 'Bolter | | 'Bolter Joined: Mar 2008 Posts: 3,750 | Firstly Robert,I hope your dog makes a good recovery.
Assuming you're happy with the M/C you maybe right about the caliper pistons sticking.
I try to make a habit of pumping the brake pedal every few days,as mine has been sitting for a while too.
This will hopefully avoid the same problems you seem to be having.
1950 Chevy Advance Design 3100 in ScotlandIn the Stovebolt GalleryMore pix on Flickr. I've definately got this truck thing in my blood ... my DNA sequence has torque settings"Of all the small nations of this earth,perhaps only the ancient Greeks surpass the Scots in their contribution to mankind" Winston Churchill.
| | | | | Joined: Dec 2005 Posts: 1,026 'Bolter | | 'Bolter Joined: Dec 2005 Posts: 1,026 | Problem solved!! Got a chance to install the calipers and that took care of the problem. Now on to the engine. Gotta figure out why it's running so crappy!
Robert C. If it's true what they say, "You learn from your mistakes," I'm a Genius in the making. 1950 3600 | | |
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