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R&R Cylinder Head with Tech Assist (Read 1551 times)
DragBikeMike
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Re: R&R Cylinder Head with Tech Assist
Reply #45 - 12/17/23 at 00:15:17
 
Once you get the release arm out of the clutch cover, inspect the flats for the release cam.  They will probably be a bit worn.  See how the release cam wears the flats on the shaft.  If the wear is worse than this, you might wanna think about a new shaft.
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Re: R&R Cylinder Head with Tech Assist
Reply #46 - 12/17/23 at 00:16:06
 
Check the fit on the new Sneezy release cam.  Slip it onto the shaft.  If it won’t go on the shaft, you might have to dress it up lightly with a jeweler’s file.  Remember, you want a tight fit.  Don’t get carried away with the jeweler’s file.  If it’s loose on the shaft, it can be shimmed a bit to tighten it up.  Let us know how it fits.  If it needs a shim, we can provide the details.

Once you are satisfied that the new release cam fits, you can reassemble the shaft into the cover.  You will want to replace the o-ring.  I suggest you stay away from generic o-rings unless you can get your hands on a metric item.  I’m sure you can probably find a SAE o-ring that will fit, but the cross section won’t be correct, and it will either leak or bind.  The o-ring is 1.9mm cross section x 6.8mm ID.

I suspect you will find installation of the release shaft quite a juggling act.  You must feed it through the cover, return spring, release cam, thrust shim, and lower bearing.  It might drive you nuts, but you will eventually get it installed.  Don’t forget a new cotter pin, and make sure the cotter pin doesn’t snag anything when you cycle the release arm.

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Re: R&R Cylinder Head with Tech Assist
Reply #47 - 12/17/23 at 00:16:57
 
You can remove your clutch pack all assembled by using some large washer with a couple of the springs.

Remove the release bearing assembly and set it aside.  I suggest you install a new o-ring on the push piece.  That o-ring is critical for proper oil pressure to the transmission and clutch.  Sorry, I don’t know the dimensions.  You should get the OEM part so that it seals correctly.
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Re: R&R Cylinder Head with Tech Assist
Reply #48 - 12/17/23 at 00:17:51
 
Once you have removed the release bearing assembly, reinstall the bolts with large washers, like this.  I would put all four springs in there along with the temporary washers.  That will lock up the clutch and make it easier to break loose the large nut that secures the clutch hub to the input shaft.  Once you have the clutch locked up, you can bend over the lock plate behind the nut and break loose the nut.
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Re: R&R Cylinder Head with Tech Assist
Reply #49 - 12/17/23 at 00:18:57
 
To break loose the clutch hub nut, you can keep the shafts from turning by placing the transmission in 5th gear and holding the rear brake (the cable adjuster at the rear wheel works good for that).  If the nut is stubborn, you can place soft rolled copper tubing in the primary gear mesh. It MUST BE SOFT ROLLED so you don’t damage the gear teeth. The clutch hub nut is right-hand threads so counterclockwise to loosen.  You need to be careful with this nut, its very thin and the male threads on the input shaft are notched by the splines.  There is almost no thread engagement.

This piece of soft rolled copper tubing has been used to lock up the primary gears.  It works good and doesn’t hurt the gears.
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Re: R&R Cylinder Head with Tech Assist
Reply #50 - 12/17/23 at 00:19:53
 
Once the hub nut has been removed, you can pull the entire disk pack straight out.  You could also remove the entire clutch assembly if you want, but I prefer to remove the disk pack first, and then the basket.
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Re: R&R Cylinder Head with Tech Assist
Reply #51 - 12/17/23 at 00:21:02
 
Once the disc pack (hub, pressure disk, fibers, steels, and wave washer assembly) has been removed, you can pull the clutch basket, spacer, oil pump drive gear, and thrust washers.  Just as SurvivingPhilly mentioned in reply #36, you must be extremely careful with the oil pump drive gear.  Watch the Video he included.  It’s a must see.

That video does a great job of explaining how easy it is to lose the drive pin, and it also covers how easy it is to install the gear backwards.  One thing it doesn’t cover is that if you install the gear backwards the drive pin is no longer captured, and it can fall out.  So, be careful when you pull the clutch basket.  Get your hand behind it and hold the gear in place as you pull the basket off the shaft.  And when you put it back together, make sure the pin is in place, the gear is oriented correctly so the pin is captured, and you hold the gear in place as you slip the basket over the shaft.

The gear must be oriented like this to capture the drive pin.
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Re: R&R Cylinder Head with Tech Assist
Reply #52 - 12/17/23 at 00:23:17
 
Given the appearance (very dry) of your clutch pack, I think you should disassemble it and measure all the fibers and steels.  Would also be a good idea to inspect the running surfaces on the pressure disk and hub.  Post the measurements and some pictures.

I plead ignorance on your oil level bullseye.  I have no idea how it’s installed.  Hey Dave & Versy, is that thing pressed in and then sealed with silicone, or is that white stuff some sort of epoxy?  I imagine it could result in a terrible accident if it fell out.  Which direction is it installed, from the outside in, or from the inside out?

Looking forward to your next post.
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Re: R&R Cylinder Head with Tech Assist
Reply #53 - 12/17/23 at 02:00:28
 
DragBikeMike wrote on 12/17/23 at 00:23:17:
I plead ignorance on your oil level bullseye.  I have no idea how it’s installed.  Hey Dave & Versy, is that thing pressed in and then sealed with silicone, or is that white stuff some sort of epoxy?  I imagine it could result in a terrible accident if it fell out.  Which direction is it installed, from the outside in, or from the inside out?


The oil window is pressed into the case from the inside.  It is mounted in a rubber bushing that is a snug fit.....it likely is oil tight without the RTV that is applied to the inside.  I have pressed several of them out for applying the Cerakote and baking the finish - they press back in pretty easily with a bit of RTV acting as a bit of a lube while installing it.  I then apply a bead of Suzukibond RTV as it was from the factory.
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Re: R&R Cylinder Head with Tech Assist
Reply #54 - 12/17/23 at 06:20:15
 
Thanks Mike, Dave, Verslagen, and SurvivingPhilly!

Mike,
I didn’t set it at TDC for yesterday.  My main goal was to get the cover off and inspect the CCT and decide if I needed to buy a Verslavy CCT.  I got that accomplished and emailing with Verslagen about it.

Note: Getting the piece of dowel rod stuck in the cylinder may have been a blessing in disguise.  It forced me to pull the clutch cover and inspect the CCT and find it at 18mm.  

Q: What is the best tool to remove the c-clip on the CCT?  Pick, screw driver, needle nose plyers?  I don’t have anything fancier than that for this kind of thing.  I can just see the thing flying across the garage never to be found or down into the motor.

Mike, you mentioned a couple o-rings that I didn’t think about and buy when I bought all the other parts.  I need to make another list of needed parts.  Thanks for the clean up tip on the oil filter housing.  I didn’t notice that but the o-ring does look pretty tired and sketchy..

I’m with Verslagen about not popping out the oil check window.  I’ll clean it up with some isopropyl alcohol and q-tip (trying not to fog the glass with solvents), and apply some fresh Suzukibond around the perimeter.

Today’s to-do list is short.  Prove I can find TDC (without Woody) and then fumble around with the clutch release arm, and if ok, install the Sneeze cam release.  I need to check that o-ring and rod for wear and see if I need a new part.  Can’t be too expensive.

I did buy a Suzuki OEM cover gasket.  I saw some cheap ones online, but coughed up the $$ for an OEM.

I’m still intimidated by the clutch pack assembly.  I need to think about all that more.  As noted in Oldfeller’s posts, nobody has worn out the fiber discs and plates.  My main concern is glazing and warping.  They are pretty dry as they got bathed in an oil/gas mixture due to carb flooding.

Beautiful day for a ride in Houston today.  I think I need some fresh air!  

Thanks again, Guys!!
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Re: R&R Cylinder Head with Tech Assist
Reply #55 - 12/17/23 at 07:50:02
 
If the bike is in neutral, should I be able to rotate the clutch hub/pack freely?  I think I'm in neutral, but it won't rotate at all.  

I don't want to start searching for TDC and turning the motor if it's somehow stuck in gear or something else is going on.

Bike is up on the stand, wheels still touching the ground.  I bumped the gear shifter up and down with my hand, but it's all kinda wonky since I removed the right front foot peg, brake assembly, heat shield.

Is the bike not in neutral?  This seems to kinda correlate with me finding the bike difficult to roll around in the garage when I think I'm in neutral.  When I've turned the motor by hand looking for TDC in the past few weeks, I've been able to do it without the bike trying to move or acting like it's in gear.

What's going on?  Why am I seemingly stuck?  I don't want to try turning the motor and looking for TDC until I get some confirmation or clarify about if I should be able to rotate the clutch freely.

Feeling confused, ignorant, and defeated...
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Re: R&R Cylinder Head with Tech Assist
Reply #56 - 12/17/23 at 08:11:42
 
ThumperPaul wrote on 12/17/23 at 07:50:02:
If the bike is in neutral, should I be able to rotate the clutch hub/pack freely?  I think I'm in neutral, but it won't rotate at all.  



Those 4 springs are holding the clutch plates together and prevent them from mowing/slipping/sliding/turning........the only way the clutch can be released is by pushing that clutch rod against the springs and spreading the plates apart.

Being in neutral has no affect on the clutch - they are not connected in any way. Neutral disconnects the input and output shaft of the transmission so that the shafts can turn independently of each other.

It should not be hard for you to find neutral.....does the little green light work when the key is turned on?

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Re: R&R Cylinder Head with Tech Assist
Reply #57 - 12/17/23 at 09:06:05
 
Thanks Dave!  That's somewhat of a relief.  I have the battery removed and sitting on the tender on the bench.  The Green Neutral light would be too easy!!  Time to reconnect the battery!  That never dawned on me!  Duh!

I obviously want to make sure I'm in neutral before I do something stupid like throw the bike off the stand while turning the motor by hand to find TDC.
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Re: R&R Cylinder Head with Tech Assist
Reply #58 - 12/17/23 at 09:23:44
 
Stock clutch release arm assembly before pics.
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Re: R&R Cylinder Head with Tech Assist
Reply #59 - 12/17/23 at 09:24:50
 
Partial disassembly.
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