My timing sucks. Finally decided to tear into my clutch, so my bike is disassembled in the garage. And now it's jumped from upper 40's to upper 70's...
Anyway... when I got the plates, hub and basket out of the way I found oil in the case. Mixed with the dust from the plates, it created a thin layer of sludge at the bottom of the case. From what I gather, it could (hopefully) be as simple as worn o-rings on the pushrod. Everything looks intact in there and seals good. Is there a good way to determine the source of the oil?
I'm also confused about the drum. I'd read the older STs had steel drums that could be swapped out with newer aluminum drums to cut some rotating weight. So I got an alu drum off a newer ST. Turns out the one in my '99 ST2 is also aluminum. So is it the actual 'plate holder hub' that is aluminum in the later models? On mine, this part is definitely steel. And how does one separate this piece from the drum? I don't see any way to separate the pieces, though my replacement drum is missing the plat holder assembly (pic below).
And finally... the parts diagram shows an o-ring between the clutch control pin and the pressure plate bearing, but when I disassembled mine, there was none. I'm pretty sure my setup hasn't been molested by PO's and the pin was stuck in the p-plate bearing, so I'm sure it didn't fall out. Anyone have any experience with this?
Appreciate any help.
And for those interested weight-watchers my stock steel basket weighed in at 1102g versus the replacement DP alu basket at 446g (1.45 pounds lighter.)
My stock pressure plate (starting to disintegrate at the spring holes) weighs 294g and the new "lightweight" plate from Houston Superbikes weighed 332g. Both are alu.