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Author Topic: Cb360 Reassembly Help  (Read 1484 times)

Offline MiniatureNinja

  • Posts: 375
Re: Cb360 Reassembly Help
« Reply #40 on: Jul 11, 2018, 22:57:08 »
Fixed the break issue, the spring just wasnít on, I swear I should be more observant before I post on here.

New issue:

Just installed the clutch cable, and did as the FSM said to the T. But the bike is in a constant Ďneutralí, I can change the gears freely without pulling the clutch. Also, the lever will not return.

make sure you're not missing the actuation rod ball bearing (it's very common to fall out while servicing or long periods of being apart)

'82 BMW R65LS
'75 Honda CB360 - thread

Offline cb360j

  • Posts: 27
Re: Cb360 Reassembly Help
« Reply #41 on: Jul 11, 2018, 23:12:19 »
The ball bearing is certainly there. One thing Iím not sure of, is when you correctly tighten the clutch, what do you do with the top adjuster nut? Do you tighten it back down? It didnít specify in FSM

Offline cb360j

  • Posts: 27
Re: Cb360 Reassembly Help
« Reply #42 on: Jul 12, 2018, 00:32:34 »
Another random question: if a motorcycle is not running, are the intake valves open or closed?


Offline Sderbyshire

  • Posts: 162
  • Into Sailing, classic Triumph cars and motorbikes.
Re: Cb360 Reassembly Help
« Reply #44 on: Jul 12, 2018, 05:52:26 »
Another random question: if a motorcycle is not running, are the intake valves open or closed?

Depends where the cam was when the engine stopped.

All valves could be closed, or any other combination!

Offline jpmobius

  • DTT BOTM WINNER
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  • Posts: 1176
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Re: Cb360 Reassembly Help
« Reply #45 on: Jul 12, 2018, 09:09:53 »
There are 2 adjustments to the clutch.  One is only for the cable itself.  The other is the throw out mechanism, and is the one on the side cover (not on the cable).  First, with the side cover off, the clutch should be engaged (like the lever is not being squeezed.)  You can check this by putting the transmission in any gear and seeing that the the engine tries to turn when you turn the rear wheel.  With the cover still off, squeeze the lever and observe it functions normally though with very little effort as you are only pulling on the throw out return spring.  You can look at this function inside the cover.  Also notice that when you pull in the lever, the throw out moves in and out as well as rotates.  This in and out motion is what pushes the clutch plates apart, disengaging it and allowing the engine to spin without driving the transmission and hence, the rear wheel.  In the center of the throw out mechanism, there is a short threaded shaft that is the adjustment for the throw out.  It is needed to allow for the accumulated manufacturing tolerances of the clutch pack, the case dimensions and all the other components that make up the clutch throw out components.  Take the lock nut loose, and unscrew the adjusting shaft a good ways.  If the parts are crusty and the adjuster does not turn freely, take it back apart and clean everything so it does.  Reinstall the side cover, and the lever should still have the same tension as before - just the return spring.   Screw in the adjuster until you feel resistance.  The resistance occurs when all the slack is removed from the assembly and the clutch starts to disengage.  You don't want this unless you are pulling the lever, so once you feel all the slack is gone, back the adjusting screw out 1.4 to 1/2 turn and lock it in place with the lock nut.  After this is done, adjust the cable.  This is similar in that you want almost all the slack out of the cable, but not so tight that you have the clutch partially disengaged.  You should have about 1/4" of motion at the end of the lever before you feel the strong resistance of starting disengaging the clutch.
Mobius


On a long enough timeline, the survival rate for everyone drops to zero.

1973 RD350 Yamaha build  http://www.dotheton.com/forum/index.php?topic=66498.0

Offline crazypj

  • Posts: 12994
  • Split personality, I fake being smart
Re: Cb360 Reassembly Help
« Reply #46 on: Jul 12, 2018, 12:59:01 »
You do have clutch assembled correctly? As bike has an 'internal' pressure plate, it's pretty easy to get it wrong and not have the plates in contact.
'you can take my word for it or argue until you find out I'm right'
Best thing I ever overheard
"yep, PJ's my boss, he taught me everything I know, just didn't teach me everything he knows"
Brian Morgan, 1982

CB360's,  http://www.dotheton.com/forum/index.php?topic=11736.0
XS650,  http://www.dotheton.com/forum/index.php?topic=11922.0

Offline MiniatureNinja

  • Posts: 375
Re: Cb360 Reassembly Help
« Reply #47 on: Jul 12, 2018, 14:35:41 »
Also make sure the cam part is in there correctly, getting stuck engaged may be because the cutout is in the wrong spot causing it to rub on the notch
'82 BMW R65LS
'75 Honda CB360 - thread

Offline cb360j

  • Posts: 27
Re: Cb360 Reassembly Help
« Reply #48 on: Jul 12, 2018, 22:29:47 »
I adjusted the cable over and over, still nothing. Their strange thing, it changes gears without pulling the clutch lever. When it goes into gear, the tire does not spin.... so someone guide my thinking here, but if the clutch is in theory engaged, and allowing the transmission to go through the gears, then wouldnít the rear wheel spin when itís in gear?
 Thank you all for the help btw, I really appreciate it

Offline MiniatureNinja

  • Posts: 375
Re: Cb360 Reassembly Help
« Reply #49 on: Jul 12, 2018, 23:36:11 »
I adjusted the cable over and over, still nothing. Their strange thing, it changes gears without pulling the clutch lever. When it goes into gear, the tire does not spin.... so someone guide my thinking here, but if the clutch is in theory engaged, and allowing the transmission to go through the gears, then wouldnít the rear wheel spin when itís in gear?
 Thank you all for the help btw, I really appreciate it

it's a sequential gearbox, it will shift with the clutch engaged or disengaged

generally the trans/engine needs to be in motion for the bike to shift up past say 2nd or 3rd.

im going to go with PJs instincts and suggest that the clutch may not be properly assembled and engaging.
'82 BMW R65LS
'75 Honda CB360 - thread