....why this occurs on a right lean and disappears on a left?
Maybe the shift drum is off slightly. Allowing one of the dogs to tic against the gear next to it when leaned?
 
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....And, why it has been rubbing on the inside of the case off and on.
You using a stock clutch worm actuator or one with more throw? More throw would push the pressure plate further out....
 
Ok guys, gonna start on a reply and update. Will do a photo essay so to speak with questions answered and comments by me along the way.
It is going to take awhile as I'm waiting for some videos to upload so that I can post them. Hopefully I won't run out on the timer and lose all this.
I remember Jim and I found out in the past that an unposted comment will eventually disappear but don't know how long we've got before that happens.

Hang on, a bunch of stuff coming and it may take more than 1 post. Maybe I'll do Skulls trick and create a couple of place holders. Can always go back and delete them if not required I guess.

Maybe the shift drum is off slightly. Allowing one of the dogs to tic against the gear next to it when leaned?
:shrug: pics to follow.

Everything's stock Jim except for the needle bearing.
 
Measure the radius of those scrub marks in the cover, from the protruding nub, it should be the center. Compare that radius with the pressure plate, see if it aligns with the springs screws, or something else.

IMG_20180613_170359.jpg


IMG_20180613_170542.jpg


Where you're showing the 0.020" feeler gauge, check for scrape marks there on the case, and on the backside of the basket gear. Proper setup there is to have 100% mesh of the basket gear with the crank's primary gear, no overhanging of gear teeth.

screenshot_20180613_173847.jpg


IMG_20180613_153558.jpg


Don't see any signs of anything rubbing here.

See if the mainshaft's double-row bearing, behind the clutch, looks damaged, or has any lateral play. Since its inner race is clamped between the mainshaft's 1st gear and the clutch hub, reassemble the clutch minus the basket and plates. Just the washers, spacer, and hub. Just snug the hubnut. Then, by hand, try to force the hub in/out of the engine. Should have zero movement, and no sounds.

See if the mainshaft's double-row bearing, behind the clutch, looks damaged, or has any lateral play. Since its inner race is clamped between the mainshaft's 1st gear and the clutch hub, reassemble the clutch minus the basket and plates. Just the washers, spacer, and hub. Just snug the hubnut. Then, by hand, try to force the hub in/out of the engine. Should have zero movement, and no sounds.

IMG_20180613_153114.jpg


I cannot move the mainshaft as it's shown here but do get some movement if I reassemble everything without all the plates. Video to follow.

Haven't got to your other tests yet 2M, but here are some more pics in case.....ahem....you guys catch anything.

IMG_20180613_153209.jpg


Bike is in neutral.

IMG_20180613_153310.jpg


IMG_20180613_153322.jpg


IMG_20180613_153449.jpg


More to follow.......
 
Ok, pie hole stuffed with some BBQ ribs, time to get back to work.

CHAPTER 2.

Maybe all these pics are redundant after you guys see the upcoming video but I figured I'd post them anyways.
If nothing else they add more fodder to the forum and may prove helpful to someone else in the future.

These are a series of pics of my reassembly sequence.

I think I posted this one already but here's where we start.

IMG_20180613_153114.jpg


1mm washer, 2 mm washer, spacer shaft.

IMG_20180613_153510.jpg


IMG_20180613_153558.jpg


IMG_20180613_154038.jpg


Bit of a sidetrack on the next one but I have read of others filing these plate grooves off the basket. Recommended? Yes or No?

IMG_20180613_154051.jpg


1mm washer, 2mm needle bearing, 2mm washer.

IMG_20180613_154141.jpg


Now a step back. You can see that the inner edge of the 45° bevel on the spacer shaft is sitting proud of the needle bearing. Is this normal or should these be flush?

screenshot_20180613_203729.jpg


Clutch boss installed and it's sitting proud of the splined shaft by 2mm's. Should it be so?

IMG_20180613_155615.jpg


Maybe that's the way it should be but I just think they should be flush? Dunno.
Here's a pic if I remove the 2mm washer that is supposed to be there. Now it's flush.

IMG_20180613_155738.jpg


2.6mm washer, conical spring, nut.

IMG_20180613_160222.jpg


Just snugged up, not fully torqued.

IMG_20180613_160531.jpg


Three more pics I forgot to add to my previous post showing basket gear and crank's primary gear alignment. Pretty hard to get in there to get a pic.

IMG_20180613_160635.jpg


IMG_20180613_160704.jpg


IMG_20180613_160718.jpg


Dunno if these should line up or not? 2M did say no overhanging of gear teeth.

So, maybe all this is according to Hoyle, maybe not. I have noted where I think that things aren't lining up but I don't have a clue. First time I've ever looked this close in here.

And now for the long awaited video. Sure wish buddy had been available today to hold my phone/camera steady. Pretty tough to hold the phone steady while trying to capture this movement.
I can move the hub in and out along the mainshaft, but takes two hands to do that, and couldn't hold the camera steady with my knees....lol.
Was able to capture a couple of videos of me rocking the hub with one hand while trying to hold the phone steady with the other. Some inevitable movement of the phone, but I think you can see how the hub is moving as well.


2M said: Should have zero movement, and no sounds.

Well, it definitely moves and makes a noise when doing so.

So, here's my findings guys. Things don't look right to me, but I don't know what they should look like.

I'm still thinking my tick, tick noise is coming from this issue. Also something isn't right in here as the pressure plate has been rubbing on the case cover again.

I hope all of this hasn't been redundant and that it may help you guys diagnose what's going on here.

I am at a total loss. Again I appreciate all your comments, suggestions and help and hope that somehow we can get to the bottom of this one.
 
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Ok guys, finished up the edit on one of my place holders. Deleted the others.

Here is all I've got. I really don't have a clue as to what's going on here but hope I have provided enough info that one of your experienced eyes may have seen this before and have an answer. If any other pics or measurements of something specific are required, let me know.

I'm going to stop guessing because at this point I don't like where those guesses are going.

Thanks guys.
 
Maybe that's the way it should be but I just think they should be flush? Dunno.
Here's a pic if I remove the 2mm washer that is supposed to be there. Now it's flush.
The inner hub should be proud of the splines. If it's not, the nut and washer will just tighten against the shaft splines and the hub will be loose
 
Thanks Jim, ya that makes sense.
As you know I'm just flailing away in the dark here and noting my observations. I sure wish I knew more, but I guess I'll learn.

Interesting you say that though as the hub is in fact loose when everything is installed properly.
I'm thinking that this movement is what 2M was referring to when he said: Should have zero movement, and no sounds.

I must be missing something here but can't see how it is doing that.
 
Thanks Bob!
One of my questions answered by both you and Jim.

Thanks for posting the pic buddy!
 
Ok... so the play is coming from the brass bushing...either play between the bushing and basket and/or the bushing and tranny shaft. Along with that, it looks to me like the stack with the throw-out bearing in the middle should be as close to flush as you can get. Looks to me like the throw-out bearing is just floating.... that make sense?
I'm far from an XS expert... so I can't really say if that play's excessive.. or not.
 
Something else I was thinking about. The clutch hub and the gear it mounts to have to, by design, move independently of each other, so that the hub springs can compress to absorb the shock when putting it in gear.
0B75B07E-0F51-4776-BE4E-CA60389F9352.jpeg 285B8750-4B1B-4CF8-BD4F-57737C0BDA09.jpeg B4E1E7F3-25A8-456A-A761-B01C63DF1333.jpeg
These photos are from a post about replacing clutch hub springs.
http://www.xs650.com/threads/clutch-hub-cushion-spring-rebuild-w-pics.40984/#post-410775
My point is, I’ve never tried to wiggle the hub basket. Is play natural due to the fact they are not tightly joined together? Could your gear/ basket assembly have developed some excess play? Just some things to ponder.
 
....Is play natural due to the fact they are not tightly joined together?
Excellent point Bob. I didn't think of that.
Could your gear/ basket assembly have developed some excess play?
I'm not convinced yet that what we're sein' is excessive. We could be just chasin' our collective tails here.... :whistle:
 
... back in 1990 when the mechanic who replaced the shift shaft didn't have things seated properly somehow, and the clutch wasn't disengaging, a neighbour and I pulled the right case off, saw those marks where the pressure plate had rubbing on the case and did 'something' that fixed it. That was 28 years ago and I can't for the life of me remember what. From then until 2008, when I took it off the road I never had any clutch problems...

Referencing post #1044, pics 1 & 2.

I've seen several pics in here of covers with that scrape arc. But, only on 447 engines, never on 256 engines. I'm suspecting that those scrape lines are from some past history of improperly installed pressure plates, due to the unique indexing of the 447 clutch, which would have the pressure plate setting far too proud of the hub, and touching the case.

A properly assembled 447 clutchpack should show exposed, protruding hub splines.
HubSplines-01.jpg

A properly fitted 447 pressure plate is aligned with the index mark, and setting into the hub, its splines overlapping the hub's splines by about 3mm, as shown by these wear Mark's on the hub splines.
HubSplines-02c.jpg
 
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Referencing post #1044, pics 3 & 4.

You note scrape marks in pic #3.

Study this modified pic #4.
Robinc-BasketGear.jpg


This may not be your problem, could be just another old history.

But, to be sure, need to do the "basket spin test", referenced earlier.
 
CHAPTER 2.

And now for the long awaited video.
I can move the hub in and out along the mainshaft,
Was able to capture a couple of videos of me rocking the hub
I think you can see how the hub is moving as well.

2M said: Should have zero movement, and no sounds.

Well, it definitely moves and makes a noise when doing so...

Rob, what you're grabbing and wiggling is the basket, not the hub.

This test is easier if the basket isn't in the way.
Grab the hub, try to move it up/down and in/out.
That tests the mainshaft's double-row bearing.

The basket's wiggling doesn't look good.
That's tested with the "basket spin test".
It, too, should demonstrate virtually zero slop and runout...
 
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