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FJR Motorcycle Forums
Technical & Mechanical Problems
Easy Way to Bleed Hydraulic Systems
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<blockquote data-quote="RadioHowie" data-source="post: 1158489" data-attributes="member: 426"><p>My take on brake bleeding....</p><p></p><p>6-8 foot long length of silicon rubber hose...</p><p></p><p>Attached to a bleed nipple and pump ALL the brake fluid out of the master cylinder, front or rear. Completely empty.</p><p></p><p>Now, with new, unadulterated fluid in the reservoir, put the open end of the tube IN THE RESERVOIR. Pump as much as you need to eliminate ALL bubbles in the hose. Don't worry about pumping the reservoir dry...it's being refilled as you pump.</p><p></p><p>Once all the bubbles are gone, move on to the next bleed nipple, rinse, repeat, move on to the next bleed nipple, etc.</p><p></p><p>This method learned (the hard way) on a 1969 Fiat 124 Sport Spider that once had DOT 3 put in the master cylinder. Funny what that DOT shit did to the natural rubber seals on that Italian POS.</p><p></p><p>Took months to clear all that crap out to where new seals didn't dissolve like sugar cubes in a bowl of water.</p><p></p><p>Piece of hose long enough to reach from the farthest wheel to the master cylinder(s), a quart of DOT 4 and your FJR is happy.</p></blockquote><p></p>
[QUOTE="RadioHowie, post: 1158489, member: 426"] My take on brake bleeding.... 6-8 foot long length of silicon rubber hose... Attached to a bleed nipple and pump ALL the brake fluid out of the master cylinder, front or rear. Completely empty. Now, with new, unadulterated fluid in the reservoir, put the open end of the tube IN THE RESERVOIR. Pump as much as you need to eliminate ALL bubbles in the hose. Don't worry about pumping the reservoir dry...it's being refilled as you pump. Once all the bubbles are gone, move on to the next bleed nipple, rinse, repeat, move on to the next bleed nipple, etc. This method learned (the hard way) on a 1969 Fiat 124 Sport Spider that once had DOT 3 put in the master cylinder. Funny what that DOT shit did to the natural rubber seals on that Italian POS. Took months to clear all that crap out to where new seals didn't dissolve like sugar cubes in a bowl of water. Piece of hose long enough to reach from the farthest wheel to the master cylinder(s), a quart of DOT 4 and your FJR is happy. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Easy Way to Bleed Hydraulic Systems
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