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FJR Motorcycle Forums
Technical & Mechanical Problems
ABS unit blocked on front brake circuit.............
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<blockquote data-quote="Donal" data-source="post: 1209639" data-attributes="member: 20675"><p>Michalis,</p><p></p><p>I haven't taken the time to get to the inlet valve seat that was causing the problem. I did 'probe' it using a single wire from a wire brush. It went in part way and stopped. I 'worked' the wire and cleared the obstruction. Sadly I have no idea what it actually was....</p><p></p><p>A burnt solenoid valve would not cause this problem. The inlet valve (actually all the valves) are de-energised normally and only energise in a 'lock-up' condition.</p><p></p><p>Having seen the size of the hole through the valve seat I am just amazed that this problem has not occurred before. I guess if there is a very small amount of 'debris' then it can be forced through the valve seat - don't really know? I had a look on the web to see if anyone did an in-line strainer for an ABS system but found nothing. I have ordered a small sheet of 90 micron (0.0035") mesh and will attempt to fabricate something that will fit in a banjo union.</p></blockquote><p></p>
[QUOTE="Donal, post: 1209639, member: 20675"] Michalis, I haven't taken the time to get to the inlet valve seat that was causing the problem. I did 'probe' it using a single wire from a wire brush. It went in part way and stopped. I 'worked' the wire and cleared the obstruction. Sadly I have no idea what it actually was.... A burnt solenoid valve would not cause this problem. The inlet valve (actually all the valves) are de-energised normally and only energise in a 'lock-up' condition. Having seen the size of the hole through the valve seat I am just amazed that this problem has not occurred before. I guess if there is a very small amount of 'debris' then it can be forced through the valve seat - don't really know? I had a look on the web to see if anyone did an in-line strainer for an ABS system but found nothing. I have ordered a small sheet of 90 micron (0.0035") mesh and will attempt to fabricate something that will fit in a banjo union. [/QUOTE]
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FJR Motorcycle Forums
Technical & Mechanical Problems
ABS unit blocked on front brake circuit.............
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