Awesome posts, Thanks Kyle. so I'm rebuilding both the master and slave, as I hope not to re-visit this issue... I have the parts save for the replacement sightglass. I read a post somewhere, I forget where now, but the sightglass can be replaced easily using super glue and this mineral glass material. I guess I will have to get the old one out and measure it somehow, as these glass pieces come in sizes varying by .1 mm. How do I measure the old sightglass down to .1mm without a micrometer? Any suggestions? Or should I just take a WAG at it and fill it in with Super Glue? I know that a dime is pretty darn close to the diameter of the glass itself. A dime is 17.9 m, as per google. But I think maybe I pull the old glass and have a machinist measure it for me. Hopefully it comes out in 1 piece. ??? Mike
On Aug 2, 10:27 pm, Kyle Munz <[email protected]> wrote: > Man, I have no idea why the heat would be affecting it. That said both cyls > aren't that hard to rebuild. Basically you order the rubber bits, tear it > apart, clean it really well, take care putting it back together, then go > back through the PiTA process of bleeding it again. I took pics of my > rebuild in the links below. > > http://munz.kicks-ass.net/nighthawk/?p=172http://munz.kicks-ass.net/nighthawk/?p=187http://munz.kicks-ass.net/nighthawk/?p=196 > > -Kyle > > > > On Tue, Aug 2, 2011 at 5:25 PM, Mike21222 <[email protected]> wrote: > > Ok, I've bled the clutch twice, the problem still existed, so I had it > > done at the shop. > > It is still doing the same thing, the shop recommends rebuilding the > > master cylinder, but the trouble only occurs when the bike gets hot. > > Then I have to pump the clutch to get it to disengage. If it's only > > when its hot, how could that spell master cylinder, seems the heat is > > localized to the slave cylinder area and the clutch mechanism itself. > > Perhaps I should replace the slave sylinder. Or have it rebuilt. Or > > maybe I should have both rebuilt? Any comments? Mike > > > On Jul 28, 7:51 pm, Mike21222 <[email protected]> wrote: > > > I have a recently purchased 1984 CB650SC, it's been running fine for a > > > few weeks, got the oil changed a few days ago, and new tires. and > > > since then I have noticed the clutch is starting to act up. It works > > > fine when the engine is cold, but once the engine gets heated up, it's > > > tough to disengage the clutch. I have checked the clutch master > > > cylinder, it needed fluid, I added a little DOT 3, just as the book > > > prescribes. It ran fine on the way home, once I got home the clutch > > > again was acting like it did not want to disengage. Anyone know what > > > might be going on here? Could it be they used the wrong viscosity of > > > oil? Could overheating cause this? How about the slave cylinder? There > > > are no leaks anywhere. I think the bike sat for about a year before I > > > bough it. I also thjink its been quite a while since someone checked > > > the master cylinder because the screws were seized up and I had to tap > > > them both out. I replaced them with allen screws from a fastener > > > store. Any helpful suggestions out there would be appreciated. > > > Mike > > > -- > > You received this message because you are subscribed to the Google Groups > > "Nighthawk Motorcycle Lovers!" group. > > To post to this group, send email to [email protected]. > > To unsubscribe from this group, send email to > > [email protected]. > > For more options, visit this group at > >http://groups.google.com/group/nighthawk_lovers?hl=en.- Hide quoted text - > > - Show quoted text - -- You received this message because you are subscribed to the Google Groups "Nighthawk Motorcycle Lovers!" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/nighthawk_lovers?hl=en.
