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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Vincent Float Bowl Setting 289's
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<blockquote data-quote="Simon Dinsdale" data-source="post: 173908" data-attributes="member: 58"><p>The easy and quick way to check this is generally the front face of the ATD gear should align with the front face of the gear that drives it and it can be checked by just remoning the small ATD cover in the timing side. There may be a little misalignment but if the ATD gear is more than 40 thou recessed from its drive gear (breather on a twin) then maybe years of lapping in the tapers over its 70 year history by previous owners has removed too much metal. As Chris says if the back of the ATD bottoms on the crankcase or on the oil seal on the mag shaft then the tapers will not lock properly. Unfortunately the only real solution if this is the case is a replacment ATD.</p></blockquote><p></p>
[QUOTE="Simon Dinsdale, post: 173908, member: 58"] The easy and quick way to check this is generally the front face of the ATD gear should align with the front face of the gear that drives it and it can be checked by just remoning the small ATD cover in the timing side. There may be a little misalignment but if the ATD gear is more than 40 thou recessed from its drive gear (breather on a twin) then maybe years of lapping in the tapers over its 70 year history by previous owners has removed too much metal. As Chris says if the back of the ATD bottoms on the crankcase or on the oil seal on the mag shaft then the tapers will not lock properly. Unfortunately the only real solution if this is the case is a replacment ATD. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Vincent Float Bowl Setting 289's
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