Author Topic: clutch desperation  (Read 1008 times)

0 Members and 1 Guest are viewing this topic.

Offline mazingerzeca

  • Hot Shot
  • ***
  • Posts: 587
clutch desperation
« on: January 20, 2009, 10:10:41 AM »
Hello all,
I've written some posts about this, but I can not solve it. The bike is a cb125s, but, as I've seen, is almost the same as a sohc4 clutch.
The fact is that the clutch is always engaged, no matter which force you aply to the lever. Is very hard to put the gears and if you are on 1st, is really difficult to find neutral. Also, when you try to disengage it, with a gear on, you can hear the discs sliding.
This is what I have done:
- tighten and loose clutch cable.
- change clutch cable.
- file the clutch basket and inner drum teeth, to allow the discs to slide.
- change friction discs.
- sandblast the metal plates.
- change the springs.
- change the oil viscosity.

nothing worked. I don't know what else to do.
yours desperately,
a man to a clutch engaged.

This is the guilty:


Offline scunny

  • Old Timer
  • ******
  • Posts: 4,618
  • don't call me expert
Re: clutch desperation
« Reply #1 on: January 21, 2009, 11:18:13 AM »
disassemble the clutch, clean then soak the fibre pads in oil. when installing make sure all the steels are the same way round(you can feel a slight edge on them from when they were stamped out)
past-cb100,ts250,cb500,cb500,gs1000,gs650g.phillips traveller
present-CB 650 retro
            VTR1000F3
           XL250S riverbed rocket
           TS250[sold]
           TS185[sold]
           XL125S[sold]
           MT50 (white)
           MT50 (red)[sold]
           KN250/XS400 project
           XR/XL250 bitsa under construction
           SL100[sold]
           XL250R
           pedal(pub bike) leaks oil
my gallery http://gallery.sohc4.net/members/personal/scunny

Offline mazingerzeca

  • Hot Shot
  • ***
  • Posts: 587
Re: clutch desperation
« Reply #2 on: January 21, 2009, 11:20:50 AM »
yes, I've done both things. Thanks anyway.

Offline moham

  • .fnord.
  • Expert
  • ****
  • Posts: 1,108
Re: clutch desperation
« Reply #3 on: January 21, 2009, 11:52:11 AM »
Just talking outta my a** here, but is there any adjustment to be made with the lever that actuates the clutch lifter rod? I just took mine apart the other night (74 550) and saw that the lever in the case that moves the lifter rod has a spring and adjustable bolt with locknut. Sorry if this is retarded.
78 750K-The Ocho
74 550-The Cherry Picker
70 750K0 motor-Dick in a Box

Offline mazingerzeca

  • Hot Shot
  • ***
  • Posts: 587
Re: clutch desperation
« Reply #4 on: January 22, 2009, 04:44:01 AM »
¡¡¡¡SOLVED!!!!
You can not imagine what it was. There is a spline washer (Nr 9 on partslist) that has a chaffered edge on one side. This chaffered side has to face inwards, and I was assembling it outwards, so that was the problem. the washer looked almost the same on both sides.
None of the manuals (Clymer, Haynes or Honda) told a word about this, but it should be written in capitals on the cover of the book, accompanied of a big picture of the infamous washer.
Thanks all for your help. Another problem solved thanks to this forum.

Offline moham

  • .fnord.
  • Expert
  • ****
  • Posts: 1,108
Re: clutch desperation
« Reply #5 on: January 22, 2009, 10:23:50 AM »
Excellent. Glad to hear it's working properly.
78 750K-The Ocho
74 550-The Cherry Picker
70 750K0 motor-Dick in a Box

Offline mystic_1

  • Really Old Timer ...
  • *******
  • Posts: 6,071
  • 1970 CB750K
Re: clutch desperation
« Reply #6 on: January 22, 2009, 05:22:23 PM »
That's interesting.  On a CB750 the clearances around the splined washer are huge, and it's not chamfered, so orientation matters not.

mystic_1
"A ship in harbor is safe, but that is not what ships are built for."
- John Augustus Shedd

My build thread:  http://forums.sohc4.net/index.php?topic=68952.0