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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Clutch plunger spring adjustment
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<blockquote data-quote="BigEd" data-source="post: 126391" data-attributes="member: 161"><p>I don't think that a bit of clearance at the end of the plungers is a problem. There is a counterbore in the hole for the plunger that limits how far it sticks out.</p><p>If your clutch is grabby the first thing I would do is to make a hole to get access to the adjusting screw for the plunger and increase the tension on <strong>j</strong><u><strong>ust the C7 shoe</strong></u>. Too much pressure and the clutch will slip, to little and it will grab. Use small increments maybe 1/4 - 1/2 a turn at a time. In your case try taking a little off. You will soon see if that is an improvement. It is a bit of a pain removing and refitting the shoes after adjustment. Leave the clutch cover off for a quick test ride, keep your trousers away from the clutch.</p><p>It is quite complicated compared to a multi-plate clutch and difficult to understand how it works when you first look at it. (Or even the 2nd, 3rd, 4th ... time. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite2" alt=";)" title="Wink ;)" loading="lazy" data-shortname=";)" />) Mine has quite a lot of "slop" in it, I really should replace some of the worn bits. It does, however, work well and has a very light action at the clutch lever. I removed a multi-plate clutch to fit the original once I'd got a bit of an idea about the adjustments.</p><p>[ATTACH=full]36912[/ATTACH]</p></blockquote><p></p>
[QUOTE="BigEd, post: 126391, member: 161"] I don't think that a bit of clearance at the end of the plungers is a problem. There is a counterbore in the hole for the plunger that limits how far it sticks out. If your clutch is grabby the first thing I would do is to make a hole to get access to the adjusting screw for the plunger and increase the tension on [B]j[/B][U][B]ust the C7 shoe[/B][/U]. Too much pressure and the clutch will slip, to little and it will grab. Use small increments maybe 1/4 - 1/2 a turn at a time. In your case try taking a little off. You will soon see if that is an improvement. It is a bit of a pain removing and refitting the shoes after adjustment. Leave the clutch cover off for a quick test ride, keep your trousers away from the clutch. It is quite complicated compared to a multi-plate clutch and difficult to understand how it works when you first look at it. (Or even the 2nd, 3rd, 4th ... time. ;)) Mine has quite a lot of "slop" in it, I really should replace some of the worn bits. It does, however, work well and has a very light action at the clutch lever. I removed a multi-plate clutch to fit the original once I'd got a bit of an idea about the adjustments. [ATTACH type="full" alt="Clutch shoe assembly2_cropped.jpg"]36912[/ATTACH] [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Clutch plunger spring adjustment
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