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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
4th Gear Won't Engage
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<blockquote data-quote="Don Morris" data-source="post: 5677" data-attributes="member: 4564"><p>It could be other problems but I agree with john998. The engagement can be only just enough and it has caused the shifter fork to burn out due to endthrust, particulary when dogs are worn.</p><p> </p><p>I measured the endfloat of the clutch shaft - dog end on with dog - when the box is in neutral, took something away for clearance and sized the spacer to suit. I even hand ground something off the output shaft to enable the clutch shaft to enter the gearbox more.</p><p> </p><p>It could be that pesky split pin but as said gearboxes should be as 100% certain as to being correct, a gearbox seizing up is no-no.</p></blockquote><p></p>
[QUOTE="Don Morris, post: 5677, member: 4564"] It could be other problems but I agree with john998. The engagement can be only just enough and it has caused the shifter fork to burn out due to endthrust, particulary when dogs are worn. I measured the endfloat of the clutch shaft - dog end on with dog - when the box is in neutral, took something away for clearance and sized the spacer to suit. I even hand ground something off the output shaft to enable the clutch shaft to enter the gearbox more. It could be that pesky split pin but as said gearboxes should be as 100% certain as to being correct, a gearbox seizing up is no-no. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
4th Gear Won't Engage
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