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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Main bearings
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<blockquote data-quote="SteveO" data-source="post: 113128" data-attributes="member: 3636"><p>Having finally got the oil pump fitted (see thread), I am now experiencing some difficulty getting the inner races of the mains into position. I'm assuming that they have to be driven down until they are hard against the ground face on the flywheel. Is this correct? Stevens says it is better if they are a light drive fit on the mainshafts and I am aware that when the engine is stripped they should remain on the shaft, but how light is light? Mine seem to be quite tight on the shaft. I have supported the crank in the Workmate in such a way that I am only drifting against the relevant flywheel rather than the whole bottom end assembly, so hopefully I won't be knocking the flywheels out of true. The drive side one is nearly down, but the timing side is quite difficult.</p></blockquote><p></p>
[QUOTE="SteveO, post: 113128, member: 3636"] Having finally got the oil pump fitted (see thread), I am now experiencing some difficulty getting the inner races of the mains into position. I'm assuming that they have to be driven down until they are hard against the ground face on the flywheel. Is this correct? Stevens says it is better if they are a light drive fit on the mainshafts and I am aware that when the engine is stripped they should remain on the shaft, but how light is light? Mine seem to be quite tight on the shaft. I have supported the crank in the Workmate in such a way that I am only drifting against the relevant flywheel rather than the whole bottom end assembly, so hopefully I won't be knocking the flywheels out of true. The drive side one is nearly down, but the timing side is quite difficult. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Main bearings
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