Notifications
Clear all

Which speed bleeder for SR3 standard clutch slave cylinder?


DavidF
(@davidf)
Estimable Member
Joined: 2 years ago
Posts: 214
Topic starter  

I bought a slave cylinder for a standard SR3 clutch from a dealer (who is now closed for the weekend) which is different than the Recluse slave cylinder which came out with my timed out engine.  These two slave cylinders use different threads and speed bleeders, so I could not use the bleeder from the Recluse.  I did not receive a bleeder valve with the new standard slave cylinder, so I thought I would save myself some time and money by buying the recommended Hayabusa speed bleeder from an online motorcycle parts store.  The bleeder valve fits the threads, but it does not seal off the fluid when snugged up.  It appears that either the valve or the slave cylinder has tapered threads which prevents the bleeder valve from seating/sealing, and I don't want to keep tightening and strip the slave cylinder.

Does anyone know what part I need or what I might be doing wrong?  The ones I purchased are Goodridge SB8125 and SB8125L (M8x1.25 threads).  


Quote
DavidF
(@davidf)
Estimable Member
Joined: 2 years ago
Posts: 214
Topic starter  

I found the problem and a reasonable solution.

Posted by: @davidf

It appears that either the valve or the slave cylinder has tapered threads which prevents the bleeder valve from seating/sealing, and I don't want to keep tightening and strip the slave cylinder.

This is incorrect -- the threads are not tapered; the problem I think is a manufacturing error or I am using the wrong bleeder valve, but my guess is a manufacturing error.  Upon close inspection, the tapped threaded hole in the slave cylinder is not threaded sufficiently deep, preventing the conical end of the bleeder valve from screwing in all the way down to seat against the hole.  I might have been able to tap the threads a little deeper, but I decided to remove the first couple of threads from the bleeder valve (using a file) so that it seats and seals off the fluid.  And it worked.


ReplyQuote
Share: