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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Oil Loss after 100mile run
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<blockquote data-quote="ogrilp400" data-source="post: 45751" data-attributes="member: 88"><p>G'day Eugene,</p><p> This is not an unusual problem on Comets mainly because there isn't an oil seal on the crank between the crankcase and the primary and no oil seal on the gearbox main shaft where it enters the back of the primary case. Consequently oil is moved from the crank case into the primary case where it over fills and comes out of the back of the primary case. This problem was covered on this forum just recently and the solution is to fit a seal to the crank case behind the main shaft sprocket. This stops oil migrating into the primary chain case. Then fit a rudimentary seal behind the clutch.</p></blockquote><p></p>
[QUOTE="ogrilp400, post: 45751, member: 88"] G'day Eugene, This is not an unusual problem on Comets mainly because there isn't an oil seal on the crank between the crankcase and the primary and no oil seal on the gearbox main shaft where it enters the back of the primary case. Consequently oil is moved from the crank case into the primary case where it over fills and comes out of the back of the primary case. This problem was covered on this forum just recently and the solution is to fit a seal to the crank case behind the main shaft sprocket. This stops oil migrating into the primary chain case. Then fit a rudimentary seal behind the clutch. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Comet Oil Loss after 100mile run
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