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| | | | Joined: Aug 2005 Posts: 28 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2005 Posts: 28 | Having a braking issue with my 1950 1/2 ton. Prior to changing a leaky brake cylinder on a rear wheel I started to have a problem when I applied my brakes. I would have to pump it a couple times to get proper brake pressure. It would be ok and hold but the next time I come to brake I would have to do the same thing. Not the safest thing on this single brake master cylinder system. I changed the leaky cylinder and bled the system. Still had the spongy brake problem so I put a kit in the master cylinder and bled the system. I still have the same problem with the brake needing to be pumped to get pressure. Could it still be air in the system? Anyone else with this problem? Open to all suggestions. Keep on truckin. Dan V
Last edited by danv; 11/07/2015 12:35 AM.
| | | | | Joined: Sep 2001 Posts: 29,269 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,269 | What procedure did you follow when adjusting brake shoes? | | | | | Joined: Aug 2005 Posts: 28 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2005 Posts: 28 | I adjusted the shoes with the wheels off. Turned the hub until it was starting to catch and backed if off slightly. Maybe I did not explain myself well enough. The brake pedal gets little to no resistance until you pump the pedal. Once it pressures up it holds OK until the next time you come to brake.
| | | | | Joined: Aug 2005 Posts: 28 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2005 Posts: 28 | I adjusted the shoes with the wheels off. Turned the hub until it was starting to catch and backed if off slightly. Maybe I did not explain myself well enough. The brake pedal gets little to no resistance until you pump the pedal. Once it pressures up it holds OK until the next time you come to brake.
| | | | | Joined: Mar 2010 Posts: 10,274 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,274 | You still have air in the system. Pumping the breaks until they hold is due the gradual compression of the air in the line until it has compressed to the point where enough pressure is exerted on the brake shoes to hold the drums. Look for leaks everywhere.
Carl
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
| | | | | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | I would think that if your problem is air, it will feel like you are pushing on a spring. If it takes one extra quick pump and the pedal is firm, it is an adjustment problem. | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | There are 2 adjustments on each wheel. They are all right hand threads. Adjust each one till you get a heavy drag. Then back it off about 4 notches. You may still get a little drag but that's ok.
They say money can't buy happiness. It can buy old Chevy trucks though. Same thing. 1972 Chevy c10 Cheyenne SuperIn the Gallery Forum | | | | | Joined: Aug 2005 Posts: 28 Wrench Fetcher | | Wrench Fetcher Joined: Aug 2005 Posts: 28 | | | |
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