 Bleeding Brakes, Bleeding Brakes |
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| Gromicko |
 Mar 19 2016, 07:23 AM
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#1
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Gromicko  Group: Members Posts: 7 Joined: 19-August 15 From: Pennsylvania Member No.: 19,081 Region Association: MidAtlantic Region  |
I recently had all 4 calipers on my 1971 914 rebuilt because it had been sitting for decades. The brakes worked, but stuck, and a had a small leak. I put the calipers back on, but now can't get brake fluid to flow through the lines in order to bleed the brakes. I've tried a hand vacuum pump on the bleeder screws, even disconnected the lines at the calipers. The reservoir is full, but I can get the fluid to flow. Can I hook up an electric high vacuum pump to the lines? I'm afraid I'll damage the rebuilt calipers. Any suggestions? Can you send instructions?
Thank you, Greg |
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| stugray |
Mar 19 2016, 08:02 AM
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#2
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Advanced Member Group: Members Posts: 3,824 Joined: 17-September 09 From: Longmont, CO Member No.: 10,819 Region Association: None |
Replace the flex lines.
They swell internally and block the flow. |
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| dangrouche |
Mar 19 2016, 08:46 AM
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#3
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dangrouche Group: Members Posts: 550 Joined: 1-May 04 From: San Francisco Bay Area Member No.: 2,012 Region Association: None |
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| tomrev |
Mar 19 2016, 08:58 AM
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#4
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Member Group: Members Posts: 231 Joined: 25-February 14 From: N. Mich. Member No.: 17,037 Region Association: None |
QUOTE(dangrouche @ Mar 19 2016, 06:46 AM)  New MC's frequently want to be bench bled, to get fluid flowing, before even installing in the car. I do it over my parts cleaner, with plastic lines going right back into the res.,cycle it till it flows, then clean up, and installing the car. It can be frustrating! |
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| Bulldog9 |
Mar 19 2016, 09:54 AM
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#5
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Senior Member Group: Members Posts: 705 Joined: 21-August 13 From: United States Member No.: 16,283 Region Association: MidAtlantic Region |
As Stu said, if you havent yet, replace the flex lines. Also I've found the vacuum or pull method less effective than the push. I bought one of those 'push' bleeders and it works outstanding. Comes with adapters for other vehicle MC as well. Just make sure you clamp the MC overflow line.
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| Gromicko |
Mar 19 2016, 05:03 PM
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#6
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Gromicko Group: Members Posts: 7 Joined: 19-August 15 From: Pennsylvania Member No.: 19,081 Region Association: MidAtlantic Region |
Thank you all. I will replace the flex lines and try the pressure bleeding.
Greg |
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| BeatNavy |
Mar 19 2016, 05:17 PM
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#7
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region 
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QUOTE(Steve Pratel @ Mar 19 2016, 11:54 AM) I bought one of those 'push' bleeders and it works outstanding. (IMG:style_emoticons/default/agree.gif) I bought one of these: http://www.pelicanparts.com/More_Info/PEL0...amp;SVSVSI=9144 It works like a champ and ends up being a one man operation. The family is glad that I don't have to draft them into helping with the bleeding operation. |
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