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I have a 1978 Chevy C20 pickup, 350 engine, no brakes

(1990 Chevrolet 1500 Pickup)
in Ogden, KS on May 04, 2017
I replaced master cylinder. still no pressure. tried to bleed brakes with no fluid coming out. I am at a loss of what to try now
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on May 04, 2017
Did you bench bleed the master cylinder before installing? .. IF so, was it done correctly? .. IF the answer is no to either question is no > seek qualified hands-on help with brake repair for it is a task the DIYer should not attempt!
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on May 04, 2017
No, I did not, i tried to bleed brakes and nothing, i need to find the order in which to bleed the truck, Is it passenger R. Driver R, then Passenger F, and Driver F ? < i will take off master cylinder saturday morning and bleed it. Hopefully that will do the trick. I will let you know what happens.
on May 04, 2017
on May 06, 2017
they had given him the wrong brake cylinder, then a bad one, it turned out a bad brake line. We put back on the original brake cylinder and wahlaaa, working, brake pressure, drove the speed limit home, Please help me though how the brake drum goes on. Can you till me where i can find a diagram of the brake area.? Its a 3/4 long bed, 1978 chevy C20 pickup
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