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| | | | Joined: Nov 2008 Posts: 64 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2008 Posts: 64 | When I had bought my 63 c10 it was all original except the master cylinder was changed out to a duel line.I bought an original single line to put back on it and here is the problom I am having.I changed the brake lines to fit the single line MC. bench bled the MC. and bolted it up and after the vacuum bleeding the brakes the pedal is still going to the floor.I pulled the MC to inspect it and what is happening is the brake pedal linkage rod when fully depressed is not even touching the MC piston .The linkage rod will have to fit an 1 and 1/2 inches into the MC.piston before it will even make contact.The linkage rod only extends an inch outside the fire wall when fully depressed.That is with the linkage rod adjusted all the way out.I bought the MC from Advanced Auto and it is a Recon .Is the brake linkage rod suppose to go that far into the M.C?
Thanks for any help you can give me.
Longhorn | | | | | Joined: Nov 2005 Posts: 6,100 'Bolter | | 'Bolter Joined: Nov 2005 Posts: 6,100 | Hy Longhorn, if the pushrod was not modified to work with the master cylinder that you removed, then I would say that the master cylinder you have installed now is incorrect for your truck. | | | | | Joined: Nov 2008 Posts: 64 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2008 Posts: 64 | I took the linkage rod out just to see if it had been cut or modified in anyway and it looks like nothing has been done to it.I was hoping someone would know how far in the MC the linkage rod should go ,or how long there linkage rod is so I have something to compare it to .I hate to get another MC it be the same.I could make it work but I dont want to that .I must have the wrong MC like you said or I have the wrong linkage rod.
Thanks | | | | | Joined: Nov 2008 Posts: 64 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2008 Posts: 64 | I think I may have just figured this out.There were 2 different Master Cylinders in 63 one being the round one that I am trying to use now ,and a rectangled one that has a longer snout on the back end of the MC.Looks like me to be atleast an inch longer in the back of the MC.
Thanks
Longhorn | | | | | Joined: Jun 2004 Posts: 8,597 Riding in the Passing Lane | | Riding in the Passing Lane Joined: Jun 2004 Posts: 8,597 | The rod should only have about 1/8 in clearance before it contacts the piston. Isn't it adjustable?
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: Nov 2008 Posts: 64 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2008 Posts: 64 | Yes it is adjustable,even with adjusted all the way out and the pedel to the floor it still does not touch the piston.From what I can tell They had an early and a late master cylinder in 63 and I think I need the early rectangled one rather than the later round one.
Thanks Longhorn | | | | | Joined: Nov 2004 Posts: 1,552 Shop Shark | | Shop Shark Joined: Nov 2004 Posts: 1,552 | Did you remedy your MC/pedal push rod situation?
| | | | | Joined: Nov 2008 Posts: 64 Wrench Fetcher | | Wrench Fetcher Joined: Nov 2008 Posts: 64 | Yes I sure did ,I got the later MC that is longer and the piston sits farther back.I have pedal now.
Thanks You
Longhorn
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