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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil leak from front cylinder head/barrel
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<blockquote data-quote="Mark Fisher" data-source="post: 26447" data-attributes="member: 510"><p>Danno, before dismantling anything try the following:</p><p>1. Make sure oil tank (UFM) wasn't overfilled, this happens when the engine has a lot of oil in the sump making the level in the UFM look low so you end up topping up by mistake..I know because I've done it! Some bikes wet-sump quickly and some don't. If there is too much oil it comes down the filler neck and finds its way to the top of the motor.</p><p>2. Clean top of engine and UFM thoroughly, use gunk or maybe jizer.</p><p>3. Run the bike and watch for leaks (make sure there is airflow to the engine, maybe a fan, so things don't get too hot). Depending on the severity of the leak this may take a little while.</p><p>4. Look for leaks in the following areas:</p><p> oil return banjo on underside of UFM</p><p> all rocker feed unions</p><p> cyliner head studs</p><p> valve and rocker caps</p><p> flexible hose to solid pipe joints (some hoses go hard with age and leak and they are only a push fit on a vincent, unless its been modified of course)</p><p> Unless you find a banjo/union that is actually loose don't just tighten them more, fit new seals (usually copper or aluminium washers). If its the hoses I think the club shop can supply the correct hoses.</p><p>good luck</p><p>mark</p></blockquote><p></p>
[QUOTE="Mark Fisher, post: 26447, member: 510"] Danno, before dismantling anything try the following: 1. Make sure oil tank (UFM) wasn't overfilled, this happens when the engine has a lot of oil in the sump making the level in the UFM look low so you end up topping up by mistake..I know because I've done it! Some bikes wet-sump quickly and some don't. If there is too much oil it comes down the filler neck and finds its way to the top of the motor. 2. Clean top of engine and UFM thoroughly, use gunk or maybe jizer. 3. Run the bike and watch for leaks (make sure there is airflow to the engine, maybe a fan, so things don't get too hot). Depending on the severity of the leak this may take a little while. 4. Look for leaks in the following areas: oil return banjo on underside of UFM all rocker feed unions cyliner head studs valve and rocker caps flexible hose to solid pipe joints (some hoses go hard with age and leak and they are only a push fit on a vincent, unless its been modified of course) Unless you find a banjo/union that is actually loose don't just tighten them more, fit new seals (usually copper or aluminium washers). If its the hoses I think the club shop can supply the correct hoses. good luck mark [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Oil leak from front cylinder head/barrel
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