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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
lub/oil pressure release
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<blockquote data-quote="lindie" data-source="post: 10264" data-attributes="member: 1466"><p>pardon my ignorance on this one but i thought the pressure relief valve was only controlling the pressure and not the suction/scavenge side of the pumps oil circuit. i can't think that checking the return in the tank will tell you of the positionining, stuck or otherwise of the valve as the suction pump picks up the dumped pressured oil whether it is recieved via the normal route of timing case-> bigend quill-> cam and cylinder jet spindles->sump, or trickled though the reliefvalve and through the timing case back into the sump.</p><p> </p><p>is there another relief valve somewhere for the the other circuit? the feed out union looks too close to the pump for it to have one unless it's built on the inlet side of the pump which would kind of defeat it's own purpose. unless theres a blockage up the return line somewhere i can't see how it'd blow lines and the oil feed hose would be under suction not pressure. the filter has a relief valve of it's own so that would bypass by rights well before it got a chance to explode unless it's a spin on type of somesort or another via a conversion. in which case a dent or crease in the casing is a more likely weakspot.</p></blockquote><p></p>
[QUOTE="lindie, post: 10264, member: 1466"] pardon my ignorance on this one but i thought the pressure relief valve was only controlling the pressure and not the suction/scavenge side of the pumps oil circuit. i can't think that checking the return in the tank will tell you of the positionining, stuck or otherwise of the valve as the suction pump picks up the dumped pressured oil whether it is recieved via the normal route of timing case-> bigend quill-> cam and cylinder jet spindles->sump, or trickled though the reliefvalve and through the timing case back into the sump. is there another relief valve somewhere for the the other circuit? the feed out union looks too close to the pump for it to have one unless it's built on the inlet side of the pump which would kind of defeat it's own purpose. unless theres a blockage up the return line somewhere i can't see how it'd blow lines and the oil feed hose would be under suction not pressure. the filter has a relief valve of it's own so that would bypass by rights well before it got a chance to explode unless it's a spin on type of somesort or another via a conversion. in which case a dent or crease in the casing is a more likely weakspot. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
lub/oil pressure release
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