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1
Technical Section / Re: Tight engine
« Last post by camman3 on Today at 07:12:21 PM »
Here we go again ::)....and a few other things could break the primary chain....but first, did it actually break....or did link come off :-\
I listened to you Dave .... but sort of thought it had been discounted by the "turns freely with plug out" period lf this thread....which will probably end up being the llngest of all time :D
Graham
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Technical Section / Re: Alternator testing
« Last post by Cosmikdebriis on Today at 06:57:44 PM »
At this point I generally start whingeing on about Selenium rectifiers and their inherent voltage drop in a 6v system... :-X
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Technical Section / Re: Rear Brake Plate Cam Movement c10
« Last post by Cosmikdebriis on Today at 06:54:42 PM »
Well that is highly unusual. Of course we don't know the history of that old cam so it may have been second hand and already knackered when fitted by a previous owner.

Just goes to show it's not always the obvious answer I suppose ???
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Technical Section / Re: sealing the sump plate c10
« Last post by Cosmikdebriis on Today at 06:44:24 PM »
The sump plate itself can become distorted as it's only a bit of pressed steel. I would advise turning it upside down on a bit of 400 wet and dry (that is on a flat surface such as a plate of glass) then in a figure of eight motion give it a quick sand for 20 seconds or so and see where the shiny spots are. Generally you will find the area around the bolt holes are the high spots.

If that proves to be the case you have a few options. Replace it with an ally aftermarket part (I think they are available).
Depending on how bad the indentations are, just keep sanding away until everything is flat. Bear in mind you are removing metal though and making things thinner which can exacerbate the problem in the long run.
If the indentations are bad you can, very carefully, hammer them into better condition before doing the above to finish things off.

On reassembly, do not be tempted to over tighten the nuts and make sure you have washers to spread the load as much as possible (though there's not much room). Also, if possible, use nyloc nuts or, failing that star washers, to stop them coming undone.

This problem is often caused by a previous owner over tightening the nuts in the first place.

Use gasket and gasket cement on reassembly.
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Technical Section / Re: Tight engine
« Last post by Paul S on Today at 06:34:40 PM »
Just one other thing that has come to mind, something seizing in the gearbox could also cause the primary chain to break, so it would pay to carefully check everything while it's apart.
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Technical Section / Re: sealing the sump plate c10
« Last post by ianinglis on Today at 06:30:56 PM »
i put mine on dry and they work fine


ian
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Technical Section / Re: Tight engine
« Last post by Cosmikdebriis on Today at 06:28:33 PM »
I would remove the primary chain cover and turn the engine over slowly with a spanner.

Check the primary chain doesn't go over tight at any point. The taughtness will change as it rotates and should be set at its taughtest point to give just a little slack.



Just though I might mention the very first thing I said on the subject, back on page one of this thread. Everyone just ignored me... ;)
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Technical Section / Re: sealing the sump plate c10
« Last post by camman3 on Today at 06:17:42 PM »
Wellseal should work as well as anything I would think.
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Technical Section / Re: Tight engine
« Last post by camman3 on Today at 05:59:20 PM »
And that's why I said freely in inverted commas......and as has been been said many times in this thread, it is difficult to make a true assessment without actually having your eyes, hands...and leg on the bike
Graham
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Technical Section / Re: Rear Brake Plate Cam Movement c10
« Last post by lol300 on Today at 05:56:34 PM »
Hi all
just an update i ordered a new brake cam just in case it was that & it has made a massive difference hardly any movement now so it must have been a worn cam,(i notice there is a recess in the centre of the new one for the grease/oil could not see one in the old one where it was obviously so worn) i thought the cam would have been hardened.
laurie :)
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