Evoluzione clutch slave cylinder install 620

[ab]

Install of Evoluzione clutch slave cylinder on my 620 did not work for some reason.  Bled the thing to death but no luck.

I need to order another brand for my 620cc 2004 monster.  Any recommendation is greatly appreciated as I got to get back to riding asap.

Please help .

[Pedro-bot]

Can you elaborate on what part of the install failed?
Where did you encounter the problem?

[peaveybassist]

Fill the resevoir, open the bleed screw on the slave cylinder. Let it drip for about 10-15 minutes. Then bleed with the normal procedure about 3-4 times. Pump, hold, open, shut, repeat. You should be fine!

[ab]

Can you elaborate on what part of the install failed?
Where did you encounter the problem?

my mechanic friend worked on this all week and even got suggestions from evo and nothing seems to work.  My understanding is that it is not pushing the rod and bike does not disengage. 
here is video of some of the work  (sorry not compressed so it may take a while to load )

[Pedro-bot]

dood, 1o min loading.............




nada, nothing, zip.

fail.


Is the clutch lever not able to be pulled?

[ab]

Well, looks like the cause might be my bike had some engine work done and that it needs to go back to shop.  Evo guy was really helpful and seems nice person.   Described everything to my buddy.  I barely understood it so i can't describe it now (will get better description later).

Thanks. 

I guess no riding for me   .

[Slide Panda]

Ok, that video finally loaded for me.

Couple observations.
1.  The slave is working and pushing on the push rod.  If there was no spring pressure from the pressure plate, being transmitted back to the slave via the push rod, the lever at the master would not spring back.  It would just stay pulled to the bar.

2.  The Evo slave uses a larger diameter piston - so the piston doesn't move as far per degree of lever pull as the stock slave.  Seems like this might be contributing to the issue.

[Langanobob]

ab,

Hope the clutch is a simple fix.  I noticed your signature line says you're thinking of going  back to the stock sprocket in place of your 14 tooth.  Just wondering why?  Too buzzy at speed?  (Sorry for the thread jack).

[ab]

ab,

Hope the clutch is a simple fix.  I noticed your signature line says you're thinking of going back to the stock sprocket in place of your 14 tooth.  Just wondering why?  Too buzzy at speed?  (Sorry for the thread jack).

No, the clutch slave cyl. did not turn out to be simple fix.  I just dropped off the bike at bike shop and looks like she may need some operations of the clutch.  I will find out and post update when mechanic gets back to me. 
As for the sprocket, my chain is always rubbing and it's bugging me a lot.  So I am going back to 15/46 and see if that will stop it.  The smaller 14T may be the culprit (at least that is what I read might be the suspect in the forum).   

[ab]

Update.

Here is the update about the Clutch slave cyl install on my 620 since my lever would not engage and I had to push the bike about 2 or so miles
Bike still in shop.  Getting a few other cosmetic things done to it while there.

 Turns out the OEM slave cyl was fine (  I just wasted $$ that I don't have on EVO upon recommendation from a well meaning buddy).  Also the attempted fix with EVO and the plastic washer buddy added compounded a non-existing problem.  The whole time it was not the OEM slave cyl that was the problem.   Read the excerpts below for more info so you don't make costly mistake like I did.


"the mounting nut fell off inside and the clutch was loose on the shaft. "

"Clutch mystery solved except the slave cylinder you provided will not
work. I'm not sure if it is not the right model, or what, but the
internal depth is not enough for proper operation of the clutch. So, I
have the OEM piece back on there."

"
I looked at the EVO slave some more, I could not figure out why it did
not fit right. Turns out, somebody put a plastic spacer under the
bearing, and this was the reason it did not fit. Was that you? The
pictures on their website show no spacer, so I have no clue. I took
that out and now it works fine. So either the EVO or the OEM slave
works fine. I have the EVO on there now and the line bled. The problem
was the clutch, not the slave, originally."

[Slide Panda]

D'oh.  That plastic pill is for older ducs that used a different (shorter) push rod.  Glad you got it sorted... sorry it was such a hassle

[erkishhorde]

You might want to make sure that the shop checked your push rod for wear. When the same thing happened to me, the push rod got a really bad groove from the clutch resting on it. I would think that the shop would have checked this but make sure anyway. Sounds like you went to a decent shop though. I can imagine a less honest shop telling you that you broke your new Evo slave by putting in the spacer and keeping it even though it's not broken.

Also, even though your friend is well meaning, I would not let him work on your bike anymore. I mean, putting a plastic spacer in your slave? Not a good idea. It's true that the older monsters need a spacer to use the current aftermarket slave cylinders but if you happen to need this spacer you should ask for the maker of the slave to provide it. I know that Yoyodyne does and it's about 1/4" long so it's not insignificant.

D'oh.  That plastic pill is for older ducs that used a different (shorter) push rod.  Glad you got it sorted... sorry it was such a hassle

I don't know about the other companies but Yoyodyne doesn't use plastic. Yoyo uses steel. I'm pretty sure that the other companies don't use plastic since the plastic could mess up the slave if the push rod drills in to it. I don't imagine that plastic would powder the same way that steel does if the push rod drills it.

Also, I know that the old dry clutch monsters had the shorter push rod but I don't know about the wet clutch monsters.

[ab]

You might want to make sure that the shop checked your push rod for wear. When the same thing happened to me, the push rod got a really bad groove from the clutch resting on it. I would think that the shop would have checked this but make sure anyway. Sounds like you went to a decent shop though. I can imagine a less honest shop telling you that you broke your new Evo slave by putting in the spacer and keeping it even though it's not broken.

Also, even though your friend is well meaning, I would not let him work on your bike anymore. .........

Thanks.  I will inquire about the push rod for possible wear.
I am very happy with the shop and mechanic.  Good service and honest and very likable quiet guy.  I have nothing but praise ever since I started taking my bike there two years ago.  It is a bit far (60 miles away ) but well worth it compared to the local dealer shop.  For such great work, rates are lots better than dealer.
I should have taken it there to begin with for this fix instead of letting non-pro try to work on it as this was not a routine fix like chain/brake pads and that type stuff. 
Lesson learned and just moving on .....

[ab]

Well, the Clutch is fixed but the master cylinder (@ the clutch lever) is leaking internally :-(.  If you sit with the bike in gear, eventually the master cylinder bleeds down and the clutch engages  by itself .  Ordered part. 

I pray I will get my bike back for this long weekend.  It's been almost a month now.  It's killing me   

[cyrus buelton]

Did JD Hord do the work on your bike?