18s 1952 noisy clutch

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Johno@
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18s 1952 noisy clutch

Post by Johno@ »

Need some advice
My 1952 18s has developed a very noisy clutch when the lever is pulled, any ideas what may need doing before I strip it?
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spookefoote1956
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Re: 18s 1952 noisy clutch

Post by spookefoote1956 »

What kind of noise?
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Iron Head
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Re: 18s 1952 noisy clutch

Post by Iron Head »

Could the clutch hub nut be loose revealing the noise when you pull the lever in?
Groily
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Re: 18s 1952 noisy clutch

Post by Groily »

In the case of my own Burman clutch (similar to yours presumably) a very audible rattle when disengaged is due to wear on the grooves on the basket along which the outside lugs of the plates slide. Irritating rather than particularly disquieting and hard to rectify short of investing in a better basket, it's a long term wear and tear thing.

This wouldn't account for a 'new' noise out of the blue, though, if that is what you are facing.

Iron Head's suggestion would likely be on point if it's happened suddenly. If the hub is loose, though, you'd expect to have experienced some funnies in terms of slack developing at the lever on the 'bars.

Another possibility is that one or more of the spring cups has backed off and is kissing the inside of the dome on the primary cover when the pressure plate is lifted.

Depends rather on the nature of the noise - graunch, rattle, continuous, regular tick clack or clonk, etc - as Spookefoote asks.
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clive
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Re: 18s 1952 noisy clutch

Post by clive »

Your 52 box should be a GB type. Operation is achieved by two plates with 3 ball bearings trapped between rotating relative to each other. If the push rod is not properly adjusted operation can result is a sharp clicking noise. Unless there is considerable wear in the components this can be prevented by correct adjustment of the pushrod clearance. (slacken off the cable, turn rod adjuster in until tight , turn back 1/2 turn, lock the nut, it should be the same size as the plug spanner I think, readjust cable)
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SPRIDDLER
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Re: 18s 1952 noisy clutch

Post by SPRIDDLER »

Welcome to the forums, John.

I tend to suspect the same as Clive has mentioned above. Bear in mind the the adjuster on the end of the cable at the g/box housing only adjusts the amount of cable slack and does not adjust the clutch. You don't have to remove the outer cover on the chaincase to adjust the clutch but can access the pushrod adjusting screw through the small inspection plate. It's a bit tricky to tighten its locknut without spoiling the setting of the adjusting screw but it can be done. If you do decide to remove the outer cover of the (notoriously leak-prone) chaincase I recommend fitting the later improved rubber sealing band available from club spares here:

https://www.amoc-parts.com//store/comer ... duct=23441

If you don't have them you can access the factory Owners and Workshop manuals here under 'Books'

http://archives.jampot.dk/
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Andy G
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Re: 18s 1952 noisy clutch

Post by Andy G »

spookefoote1956 wrote: Thu Mar 23, 2023 7:48 pm What kind of noise?
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spookefoote1956
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Re: 18s 1952 noisy clutch

Post by spookefoote1956 »

Nudge?
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SPRIDDLER
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Re: 18s 1952 noisy clutch

Post by SPRIDDLER »

Is it a continuous rotating/scraping noise when the engine's running or a clicking when the h/bar lever is operated with the engine stopped?


spookefoote1956 wrote: Fri Mar 24, 2023 7:00 pm Nudge?
A 'Nudge' keeps the topic visible as the latest post.
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Andy G
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Re: 18s 1952 noisy clutch

Post by Andy G »

SPRIDDLER wrote: Fri Mar 24, 2023 9:24 pm
spookefoote1956 wrote: Fri Mar 24, 2023 7:00 pm Nudge?
A 'Nudge' keeps the topic visible as the latest post.
Exactly, I don't think we saw an answer to the question...it would be very helpful for diagnosis.
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