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FJR Motorcycle Forums
Technical & Mechanical Problems
Stuck on Rear ABS Bleed Procedure
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<blockquote data-quote="Dan Cooper" data-source="post: 1455200" data-attributes="member: 98210"><p>When the brake pedal (or lever) is in the "brakes on" position the master cylinder is sealed off from the portion of the system that should be under braking pressure. No brake fluid can flow from the master cylinder to the slave cylinders bleed screws while the brakes are "on" other than the small amount being pumped during the pedal stroke. To use a vacuum bleeder, the brake pedal should be in the "at rest" position.</p><p></p><p>If you are using speed bleeders you can leave the bleed screw cracked open, with a hose to a catch container, and pump the brake pedal to flush the system. But there is a lot of brake line from the master cylinder to the ABS pump and back to the wheel cylinders to pump any air out of the system.</p><p></p><p>Alternately, remove the speed bleeders and install the original bleeders. Then use a syringe or some other reverse bleeder to push brake fluid from the wheel cylinders back to the master cylinder.</p><p></p><p></p><p>dan</p><p></p><table style='width: 100%'><tr><td>A man's got to know his limitations. -- Dirty Harry</td></tr></table></blockquote><p></p>
[QUOTE="Dan Cooper, post: 1455200, member: 98210"] When the brake pedal (or lever) is in the "brakes on" position the master cylinder is sealed off from the portion of the system that should be under braking pressure. No brake fluid can flow from the master cylinder to the slave cylinders bleed screws while the brakes are "on" other than the small amount being pumped during the pedal stroke. To use a vacuum bleeder, the brake pedal should be in the "at rest" position. If you are using speed bleeders you can leave the bleed screw cracked open, with a hose to a catch container, and pump the brake pedal to flush the system. But there is a lot of brake line from the master cylinder to the ABS pump and back to the wheel cylinders to pump any air out of the system. Alternately, remove the speed bleeders and install the original bleeders. Then use a syringe or some other reverse bleeder to push brake fluid from the wheel cylinders back to the master cylinder. dan [TABLE] [TR] [TD]A man's got to know his limitations. -- Dirty Harry[/TD] [/TR] [/TABLE] [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
Stuck on Rear ABS Bleed Procedure
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