brakes
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Junior User
Joined: Dec 2016
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brakes
hi guys n gals hey i put new calipers and pads on my 56 today and just pinched off the hoses and changed the calipers , complete now no brakes there after installation tried bleeding too , nothing did i smash the hoses ?
Laughing Gas
Joined: Mar 2004
Posts: 989
Likes: 113
From: australia
No , if you smashed the hoses you would still have a hard pedal .
If you fitted new calipers you have introduced air into the system .
Keep bleeding until you are 100% sure there is no air in there .
Are you using a dual circuit master cylinder ?
Are the bleeders on your calipers facing up or down ?
If you fitted new calipers you have introduced air into the system .
Keep bleeding until you are 100% sure there is no air in there .
Are you using a dual circuit master cylinder ?
Are the bleeders on your calipers facing up or down ?
Lead Driver
Joined: Jun 2011
Posts: 5,510
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From: Winnipeg, Manitoba
The piston's may not have extended. Like seaves said; make sure the bleeder screw's are at the top. Before I install the brake line's, I air up the caliper to make sure the piston extends. Just a gentle air burst will seat the caliper against the pads. Then let the caliper's gravity bleed for a bit. Be patient, good luck.
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Junior User
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ok yes they are pointing up like proud nipples they are !! haha ok its the paintence part im lacking ,,Lol do you think i ought to remove the lines and apply a tiny bit of air then reinstall and then gravity bleed ?
Lead Driver
Joined: Jun 2011
Posts: 5,510
Likes: 27
From: Winnipeg, Manitoba
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Junior User
Joined: Dec 2016
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cant get them to bleed by gravity anyway , really strange this isnt my first try this thing is a bugger, going to try vacuum tomorrow see if i can force it through , oh by the way they say theses brakes were loaded ,,,, just full of what is what im wondering now
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Laughing Gas
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Elder User
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Makes me wonder if the master cylinder push rod is adjusted too deep. If it doesn't retract far enough it can't allow new fluid into the cylinder after depressing nor fluid to return when the pedal is released.
Laughing Gas
Joined: Mar 2004
Posts: 989
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From: australia
Also incorrect residual valves or a drum brake master cyl will cause the brakes to drag and heat up .
Logistics Pro
Joined: Nov 2011
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From: Northville, MI
Some good tips in this documents from CPP: Classic Chevy, Chevrolet, GMC, Ford technical articles
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Junior User
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yes that was the issue before then i corrected that but had old calipers so changed them
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Junior User
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checked that and adjusted it now the weird thing i bought a mityvac bleeder kit , that doesnt pull fluid out at all ive checked the vac unit for leaks followed thhe directions on assembly and nothing ???????????? then put fluid in a small oil can and pumped it in about 12 or so pumps then brakes hold , crack the bleeders let air out and back to nothing at a complete loss here ,,, any suggestions??