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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Persistent oil leak
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<blockquote data-quote="kettlrj" data-source="post: 120245" data-attributes="member: 1455"><p>As a matter of interest, the joint between the rocker feed pipes and the cylinder head often leaks because after all these years the pipes do not always sit square and load up the fibre washers on one side which overloads the washer and squeezes the washer out from under the pipe fitting. I have started using 16mm Enots bonded washers under these pipes. The beauty of these seals is that they clamp down on the metal outer ring which pulls the pipe into line and lets the seal do what it should do. The other benefit is that you end up with what is classed as a hard joint instead of a soft joint which means that the clamp load from the screw is maintained, which is not the case with the soft joint determined by the fibre washer. I also use 1/4" BSP Enots washers on all the other oil pipe fittings. The long oil feed and return pipes can come loose with when fitted with the fibre washers due to vibration and being moved to enable the gearbox cover or timing cover to be removed. Making the joint to the oil pump a hard joint prevents this loosening action.</p><p>Regards Richard.</p></blockquote><p></p>
[QUOTE="kettlrj, post: 120245, member: 1455"] As a matter of interest, the joint between the rocker feed pipes and the cylinder head often leaks because after all these years the pipes do not always sit square and load up the fibre washers on one side which overloads the washer and squeezes the washer out from under the pipe fitting. I have started using 16mm Enots bonded washers under these pipes. The beauty of these seals is that they clamp down on the metal outer ring which pulls the pipe into line and lets the seal do what it should do. The other benefit is that you end up with what is classed as a hard joint instead of a soft joint which means that the clamp load from the screw is maintained, which is not the case with the soft joint determined by the fibre washer. I also use 1/4" BSP Enots washers on all the other oil pipe fittings. The long oil feed and return pipes can come loose with when fitted with the fibre washers due to vibration and being moved to enable the gearbox cover or timing cover to be removed. Making the joint to the oil pump a hard joint prevents this loosening action. Regards Richard. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Persistent oil leak
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