No brake fluid in the line!

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Gary Peak

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Hello. I am changing my brake lines and I noticed that at the HCU, there is no fluid coming out. Is this normal? I only took one line off and thought I would check before proceeding. Thanks
 
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Gary Peak

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The last owner let the pads go to metal, until the front drivers over heated and locked up. When I take the caliper off, there was no fluid coming out of the line. Changing the whole drivers side system.... lines, caliper, rotor, pads. I need to know if it is normal for the brake line going from the caliper, to the HCU. There is no fluid coming out of the unit. Is it OK to put it all back together, then bleed?
 

jws123

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You will need to re bleed your system have someone press petal while you open bleeder on caliper plenty of YouTube vids on how to do this make sure you keep the master cylinder full.
 
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Burla

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brakes are hydraulic, no fluid at the caliper, no brakes period. If the master cylinder tank was full, you have problems. Might need a flash anyhow, or a dealer clear the anti lok.
 

GTyankee

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I hope that you are purging every bit of the old brake fluid
 
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Gary Peak

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Master cylinder was full. Passenger line bled easily with my vacuum bleeder. Driver side, I can't get any fluid out. Bone dry.
 
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Gary Peak

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The guy before me ran the pads so far down it needed new pads and rotors. Driver side needed new lines. I replaced the calipers as well. Bled the passenger side great. Driver side still has no fluid at the bleeder
 

NJMOPAR

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Make sure you didn't twist the caliper hose when reassembling. That will cut off supply to that caliper while not affecting the others.
 
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Gary Peak

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I replaced line and hose. The problem is, is, there wasn't any fluid coming out of (what I believe) is the HCU. Nor were there any in the hose or line.
 

kami

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iam new here and i am trying to figure out why iam not getting any brake fluid on my Rear brake line, please help if you know. I checked Master C and its fine , booster is fine , i don't get any fluid going out of proportional valve to rear.
 

18CrewDually

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iam new here and i am trying to figure out why iam not getting any brake fluid on my Rear brake line, please help if you know. I checked Master C and its fine , booster is fine , i don't get any fluid going out of proportional valve to rear.

You should of started your own thread. I don't see what year truck or anything. On many trucks if the line was run dry, you have to press the pin in and hold the valve open to get fluid to pass the proportioning valve. You can probably find a YouTube video on it. Your bypass valve may be stuck closed not letting fluid get through to the rear lines.
But like I said I don't know what year you're working on .
 

Later2u

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You might need a "scanner" that will bleed the anti lock portion of the brake system.
 

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