Topic: Weird Clutch problem

[Artf0rm]

Would under tightening those 4 screws cause slippage like I am experiencing?  Is tighter better to be on the safe side?

[HondaMan]

1. The direction you showed the plate above is correct: the grooves must spin the oil OUT of the clutch plate when the clutch is released and pinches the metal & fiber plates together. If backward, the dispersal of oil is slowed down as it tries to fight its way back into the grooves, and the plate slips. This is true for all Japanese bikes with the slanted plate corks.
2. The bolts should tighten all the way down until they stop: if you have a torque wrench, apply 80-90 inch lbs on them at the end.
3. Be SURE that the top plate (i.e., pressure plate) is engaged up against the cork plate. It is easy to accidentally leave it sitting atop one of the splines, and the plates will barely engage if this is the case.

[LesterPiglet]

1. The direction you showed the plate above is correct: the grooves must spin the oil OUT of the clutch plate when the clutch is released and pinches the metal & fiber plates together. If backward, the dispersal of oil is slowed down as it tries to fight its way back into the grooves, and the plate slips. This is true for all Japanese bikes with the slanted plate corks.

Not according to the manual for the 550 I downloaded.

Edit: My hardcopy of the manual doesn't even mention orientation of the plates!

[madmtnmotors]

Not according to the manual for the 550 I downloaded.

The clutch in question is a 750.

[MCRider]

http://forums.sohc4.net/index.php?topic=36525.msg377135#msg377135

read this and I will find you some more

Ken

All the things discussed must be addressed. Proper adjustment of the lifter, adjust the cable where it enters the cover, and adjust the cable at the handlebar.

The 4 bolts of the lifter plate, should be tight, having been drawn down in rotation a little on each over and over.

But the subject of the link quoted is something that MUST BE ADDRESSED. The alignment of the hub splines into the pressure plate notches is not foolproof, you can do it wrong and the rest of the cluch will bolt up, but you run the real risk of breaking the lifter plate. We just had this issue on another thread. I won't repeat here as Mystic did a great job explaining it inthe quoted link.

[LesterPiglet]

Not according to the manual for the 550 I downloaded.

The clutch in question is a 750.

I know that but Hondaman said "all Japanese bikes with slanted grooves" I'm not arguing about it.

[Artf0rm]

Came in late to work today so that I could give this one more go.  I stripped everything back out and started over.  I flipped the the plates back the right way and made sure the back plate was engaging before reassembly.  I tightened the 4 bolts in a cross pattern until they all bottomed out, snugged them a little more and then reassemble the cover and linkage.  I readjusted the arm and the cable and put the cover and kick arm back on.  Fired up the bike and took it out for a test drive.  It now locks into place better then ever.  I think the springs was the step I missed.  After reading all of the horror stories about braking the star plate I was being a wuss about torquing it down.  Thanks for the help guys.  Bike is still burning rich but I have an appointment tomorrow to have the carbs tuned so I should be all geared up just in time to see it rain all weekend here!! 

 

[HondaMan]

Not according to the manual for the 550 I downloaded.

The clutch in question is a 750.

I know that but Hondaman said "all Japanese bikes with slanted grooves" I'm not arguing about it.

I think there was a flipped negative in the early 500 manuals that showed the plates backward, and the confusion (and debate?) ensued around 1972. But, I do remember "fixing" a couple of 500 Hondas around 1975-ish while in a local shop here, where someone had done just that and the bikes would not accelerate for beans. After I "fixed" them, and the shop owner asked me "what did you find was wrong?", I told him what I found. Their "senior" mechanic had done it to some of their most loyal customers, but was one vacation when the bikes returned: the owner told the mechanic when he returned, who then had me fired, said my work was undermining the shop's credibility.

Two years later, he was fired for messing up other bikes.

Some people's kids...

[ThomasD883]

Wanted to toss my hat in the ring. The oil you use makes a BIG difference in your wet clutch. I topped off teo quarts of diesel oil i had handy and 100 miles  and an oil change later, the sh!t is almost out of my plates. No friction modifiers, no additives.