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05-02-2007, 02:18 AM
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#1 |
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Registered User
 Join Date: Mar 2003
Location: Asheville, N.C
Posts: 952
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Brake problem?
I have a 72' 3/4 GMC I had restored and drove it home and it drove great about 3 months ago.I was going to drive it yesterday and the brake pedal went down to the floor and stayed there(truck wouldn't move) then slowly came back up and the truck will barely move,so I jacked the rear of the truck up and it seems like the rear brakes and drums rear drums are locked up. Does anyone have any Ideas what could be wrong? Thank you
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05-02-2007, 08:39 AM
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#2 |
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Registered User
Join Date: Apr 2004
Location: Clanton, AL
Posts: 1,253
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Re: Brake problem?
ttt.
__________________
85' CUCV M1009!!! The newest addition! 6.2diesel, Th400, NP208, & only 36k miles! 70' C-10 LWB Fleetside - Looking good these days!  05' Dodge Neon 88' Winner Escape Sport 1750 - 4.3v6 94' Seadoo SP 84' Honda TRX200, bare nekkid. Just a frame & tires. Always looking for another project or any good deal! 
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05-02-2007, 08:40 AM
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#3 |
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Registered User
Join Date: Sep 2005
Location: Smith Mountain Lake Virginia
Posts: 1,537
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Re: Brake problem?
Sticking with the K.I.S.S. approach, the e-brake off? Perhaps it didn't release? Not trying to be smart but if it's "new" to you, it could be overlooked.
You may have two issues - one, the ebrake and a second related to the actual pedal problem.
__________________
"A cat will almost always blink when hit between the eyes with a ball peen hammer" (you don't always have to state the obvious) Wear your PPE! You can eat with false teeth but you can't see with a false eye. 1959 Studebaker Silverhawk 350/400 1972 C10 L6 3OTT 2005 F350 - Built - whew! |
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05-02-2007, 08:48 AM
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#4 |
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Registered User
Join Date: Aug 2006
Location: Woodstown, NJ
Posts: 669
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Re: Brake problem?
The first thing that I would do is to raise the truck at all 4 corners, take it out of gear and try to rotate each wheel. That way you can see which wheels are affected. If it is the back axle, then break the line loose at the prop. valve. If you release any residual pressure the brake should release. Check your results and move towards the rear of the truck until you find the problem. If you accidently mixed silicon and regular brake fluid, the rubber lines on the system could swell on the inside and act like a check valve, holding the pressure on the wheel cylinder/caliper, or could possibly affect the master cylinder. Of course, all this is taking for granted that the shoes are installed properly or not adjusted too far out. I hope that it is not your shoes, 3/4t drums are a pain. Good luck.
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