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Just switching friction plates, few questions

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EazyDuz
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PostPosted: 15:46 - 22 Apr 2013    Post subject: Just switching friction plates, few questions Reply with quote

So ive just replaced the plates, old ones looked a lot thinner.
Just a few things:

1. I just wiped down the old metal plates and put them back in after checking for damage, is this ok?
2. What is the best way to remove old gasket material? Its quite a mess really.
3. Is it worth using copper grease when reinstalling the clutch cover bolts? (as in engine cover)
4. When i took the old friction plates out i did kinda lose orientation as to where they sat. I know the new plates have been reassembled the right way as all their grooves line up, but i dont know 100% if they are lined up where the old ones were.
Haynes says match them with the basket marks, but there are no basket marks, so it says if there are no marks then just make sure all the grooves line up, which mine do. I assume this is ok?
It also says something about re-aligning the single groove shape in a specific slot in the basket if the new friction plates make the clutch harder to turn. I did feel more resistance when turning it by hand but again i couldnt see any marks on the basket for this specific position
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stinkwheel
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PostPosted: 16:43 - 22 Apr 2013    Post subject: Reply with quote

1) Yes. If they are blued (as sometimes happens when they've been slipping) you can deglaze them on a sheet of fine, wet, wet and dry paper stuck to a sheet of glass with water. Use a side to side movement, not a circular one. Clean them THOROUGHLY in solvent afterwards.

2) Carefully.

I use a stanley knife blade with a piece of PVC tape stuck across the back. Take care because you can easily slice lumps out of the alloy too, keep it perfectly level with the gasket surface.

You can also make a gasket scraper by cutting a 1/2" slot down the end of a bit of copper pipe, opening it out and hammering it flat.

3) Yes. If they are crossheads, it's worth replacing them with socket heads. Be very careful not to overtighten them, they usually only need 7.5ft/lb which is pretty much one finger on an allen key and below the scale of most torque wrenches. This is one place I think stainless is entirely appropriate because they are very understressed fastners.

4) I doubt very much it'll cause a problem even if they are all in the wrong place.

If they are aftermarket plates, I'd be tempted to do a short-interval oil and filter change once they're bedded in and check for any bits floating in the oil you drain. Maybe pointless but I've known some aftermarket ones to be somewhat "hairy" and leave a load of bits floating in the oil which are bound to gum up the filter over time.
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EazyDuz
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PostPosted: 17:40 - 22 Apr 2013    Post subject: Reply with quote

Having a nightmare removing the old gasket. Does it matter if the surface is black or dark but barely raised? Like a very minimal layer of existing gasket on it?
Sprayed WD on it several times and been using a stanley knife and the thicker bits come off but it leaves some underneath
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stinkwheel
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PostPosted: 17:58 - 22 Apr 2013    Post subject: Reply with quote

EazyDuz wrote:
Having a nightmare removing the old gasket. Does it matter if the surface is black or dark but barely raised? Like a very minimal layer of existing gasket on it?
Sprayed WD on it several times and been using a stanley knife and the thicker bits come off but it leaves some underneath


I have used a plastic pot scourer to remove the last wee shreds on the basis that it would take a fair bit to actually prevent that cover sealing with a paper gasket under it.

But I felt suitably guilty about it.


EDIT: I should add. When I change clutch plates on a bike, I usually lean the bike way over to the opposite side from the clutch so the oil doesn't run out when you remove the cover. I change the plates, run it for maybe a hundred miles on the old oil then change the oil and filter. Should remove any bits of muck, dropped gasket scrapings and fresh clutch plate.

I also reckon new plates give the oil a bit of a hammering in the first few miles so I let them hammer the oil oil then bin it.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.


Last edited by stinkwheel on 18:08 - 22 Apr 2013; edited 1 time in total
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EazyDuz
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PostPosted: 18:02 - 22 Apr 2013    Post subject: Reply with quote

Ok.
I did just take a few very fine shavings off one section losing patience with a knife so i put it down and walked away haha.
I'll see if i have any nail polish remover as well, might help.
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stinkwheel
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PostPosted: 18:09 - 22 Apr 2013    Post subject: Reply with quote

EazyDuz wrote:

I'll see if i have any nail polish remover as well, might help.

Just be very careful not to get it on any rubber seals or gaskets.
____________________
“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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EazyDuz
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PostPosted: 18:12 - 22 Apr 2013    Post subject: Reply with quote

stinkwheel wrote:

Just be very careful not to get it on any rubber seals or gaskets.


Its just the cover im doing at the moment, the engine itself isnt that bad really.
Regarding the bolts i do actually have a low level torque wrench which will do 7ftlb and even less than that. Used it to torque the pressure plate bolts.
The job is a bit of a ballache. One exhaust had to be removed so the cover could come off, so that needs a new gasket as well, and new manifold bolts as the current ones...well i have no idea how they came out without snapping!
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EazyDuz
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PostPosted: 19:14 - 22 Apr 2013    Post subject: Reply with quote

What can i use to clean the other half of the casing as loads of bits are on and in it.
Shall i just swish around a bit of petrol?
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stinkwheel
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PostPosted: 20:17 - 22 Apr 2013    Post subject: Reply with quote

EazyDuz wrote:
What can i use to clean the other half of the casing as loads of bits are on and in it.
Shall i just swish around a bit of petrol?


Hot, soapy water, then rinse thoroughly and dry.
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“Rule one: Always stick around for one more drink. That's when things happen. That's when you find out everything you want to know.
I did the 2010 Round Britain Rally on my 350 Bullet. 89 landmarks, 3 months, 9,500 miles.
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EazyDuz
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PostPosted: 18:32 - 24 Apr 2013    Post subject: Reply with quote

So ive just fired it up and the bite point is still quite high. Its adjusted in such a way that the bite point is as low as possible but its still high.
Im wondering if i didnt set the pivot arm correctly but i swear i did. Will the plates bed in and the cable loosen somewhat to make the pivot arm move backwards a bit more, or should i crack the case again and turn the little adjuster screw to force the pivot arm backwards?
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