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#405639 - 11/26/11 3:04 am Okay - What is the secret  
Joined: Sep 2009
Posts: 54
calbigbird Offline
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Posts: 54
California, USA
I am finally putting the primary back together on my T100C. I bought a complete new clutch basket, clutch discs, steel plates, springs and primary chain.

What is the secret to adjusting the three springs on the pressure plate? I would rather not take this thing apart and put it back together a bunch of times if I don't have to.


It is the dead fish that go with the flow

82 Honda CBX 1000
75 Norton Commando
08 Goldwing - The Hondapottomus
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#405644 - 11/26/11 4:23 am Re: Okay - What is the secret [Re: calbigbird]  
Joined: Jul 2009
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Pete R - R.I.P. Offline
In Remembrance
Pete R - R.I.P.  Offline
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Joined: Jul 2009
Posts: 3,549
Vic. Australia
Screw the spring nuts down until the the studs almost enter the slotted part of the nut.You will screw them down further as you adjust,but you don't want a nut screwed in so far you can't release it.There must be space to fit a screwdriver between the nut and cup to push the spring away from the nut,or you won't ever get the nut off again.

Adjust the pushrod with freeplay in the cable.Screw the adjuster in until it pushes against the pushrod,then back it off 1/2 turn and lock it.Adjust up the cable to about 1/8" freeplay.

Pull the clutch lever and use the kickstarter.Watch how much wobble there is at the presssure plate.Tighten one or two springs to reduce the wobble.Mark the pressure plate near one spring,to keep track of your adjustments.

Pull the clutch and use the kickstarter a few times before you do more adustments.Try to get the pressure plate consistently running within 0.010"-0.015".

If it's looking good,you can screw all the nuts down an equal number of turns,so the studs are within the slot of the nut but not fully through the nut.(Not so far you can't release the nut,and not enough to make the lever hard to pull.)

Check the runout again.Start the engine and pull the clutch a few times.See if the pressure plate runs true each time.If it's within 0.015" each time,that's pretty good.

With the engine running,select first gear.Shift to second,then back to neutral.Check the rotor-to-stator clearance,while you have the primary cover off.If all seems good,fit the primary cover.

#405715 - 11/26/11 5:12 pm Re: Okay - What is the secret [Re: calbigbird]  
Joined: Dec 2006
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btour Online content
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Massachusetts, U.S.A.
Very good description of the procedure and details and reasons for it and the pitfalls involved. clap

I saved it in my notes. Thanks, Pete R.


Bob, Lifetime bike: '71 T120R, bought in '71 at Ken Heanes, England.
#405979 - 11/28/11 2:03 am Re: Okay - What is the secret [Re: btour]  
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calbigbird Offline
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calbigbird  Offline
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Posts: 54
California, USA
Thank you very much Pete. I used what you gave me and watched the video by Plewsy a couple of times. I managed to get the new primary chain, clutch and reconditioned rotor back together. I followed the given steps for adjustment and managed to fire it up. Even took it to the end of the block and back without incident.

Proof that even a blind squirrel finds a nut once in a while. Hopefully the doc will let me start riding my bikes again soon.


It is the dead fish that go with the flow

82 Honda CBX 1000
75 Norton Commando
08 Goldwing - The Hondapottomus
#405980 - 11/28/11 2:10 am Re: Okay - What is the secret [Re: calbigbird]  
Joined: Nov 2009
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bon Online content
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bon  Online Content
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If you have the funds buy one of the cast aluminium pressure plates , they are less likely to distort then the stamped steel one and have a neat little thrust bearing arrangement for the pushrod. They are pretty cheap.

#406007 - 11/28/11 8:17 am Re: Okay - What is the secret [Re: bon]  
Joined: Aug 2001
Posts: 1,081
Phatt Bob Offline
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Phatt Bob  Offline
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Joined: Aug 2001
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Cheshire UK
When you've made an adjustment and spun it over, its easy to lose track of which nut you tightened in case you want to un-adjust it.

I usually paint the nuts three (or 4 in my case) different colours for identification.

Bob


Phatt Bob
'95 Daytona 1200
'98 Daytona 1200 dragbike
ex-850 T140 Caff Racer, 850 Triton, Morgo T120, Starfire and Pretend Daytona 500 owner
#406131 - 11/28/11 10:00 pm Re: Okay - What is the secret [Re: calbigbird]  
Joined: Jun 2007
Posts: 1,636
DPO Offline
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DPO  Offline
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Douglasville (Atlanta) Georgia
WHAT? WOW? REALLY? Just another procedure I should have had when I was installing my new clutch pack....Oh well, the clutch, like everything else, seems to be working perfect employing DPO tactics and principles that I have up to this point!


If you love it, let it go. If it comes back, you've highsided!"

1971 Triumph T120
2005 Triumph "America"
1976 BMW R90/6

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