I just purchased a NGR clutch hub drum and wanted to know which components from the OEM hub assembly should be transferred over to my '94 M900. I've searched several threads in the tutorial section and I believe Slide Panda's how-to states to transfer the O-ring so I'll transfer it unless otherwise stated. I'll also re-use the hub nut, but I'm not sure if I should use the locking washer. If someone could chime in I'd greatly appreciate it! Back to eating my morning [bacon]
I think I found my answer in the following - my google-fu was weak this morning.
http://www.ducatimonsterforum.org/index.php?topic=51386.0 (http://www.ducatimonsterforum.org/index.php?topic=51386.0)
[thumbsup]
I wonder what it weighs compared to oem? Looks nice.
Quote from: koko64 on September 30, 2012, 11:11:10 AM
[thumbsup]
I wonder what it weighs compared to oem? Looks nice.
Next time I take it out, i'll weight it.
I re-assembled the clutch and fired up the bike. I put the bike in 1st gear, heard the click and let out the clutch lever but the gear didn't engage. It was like the bike was in neutral even. Not sure what to do at this point. Also, the NGR hub doesnt have a slot in one of the post like the OEM hub so how do I know how to align the pressure plate correctly? Any suggestions?
Sounds like you don't have it lined up right.
Just take it off and keep turning it until you feel the splines engage and the pressure plate slides all the way in. It can definitely be felt
Quote from: ducpainter on September 30, 2012, 12:16:35 PM
Sounds like you don't have it lined up right.
Just take it off and keep turning it until you feel the splines engage and the pressure plate slides all the way in. It can definitely be felt
Ok, i re-oriented the pressure plate so the splines engaged, but no luck yet. Just for reference, I did not install the spacer with the new hub. The hub nut and the locking washer are the only things securing the hub drum. Any other suggestions?
When you pull the clutch lever does the pressure plate move?
Quote from: ducpainter on September 30, 2012, 01:39:43 PM
When you pull the clutch lever does the pressure plate move?
Yes, the pressure plate moves when I pull the clutch lever.
(http://i1144.photobucket.com/albums/o496/jcathirell/2012-09-30164420.jpg)
(http://i1144.photobucket.com/albums/o496/jcathirell/2012-09-30163952.jpg)
Can you take a pic with the springs installed?
Also you mentioned leaving out a spacer. What does it look like, and where did it go?
(http://i1144.photobucket.com/albums/o496/jcathirell/2012-09-30170807.jpg)
released clutch lever:
(http://i1144.photobucket.com/albums/o496/jcathirell/2012-09-30170854.jpg)
pulled clutch lever:
(http://i1144.photobucket.com/albums/o496/jcathirell/2012-09-30170828.jpg)
parts that I didn't transfer:
(http://i1144.photobucket.com/albums/o496/jcathirell/2012-09-30170928.jpg)
I don't think the parts you left out are the problem, although the spacer may help locate the o-ring.
Are the plates under spring tension when the lever is released?
Yes I believe so. I secured the hub nut with a breaker bar - could this problem occur if I didn't torque it enough? No clutch problem before the install and i was careful to re-install the pressure plates in the correct order.
I don't think it has anything to do with the torque or lack of.
I think it has something to do with the way the pressure plate fits.
Do you have the stock pressure plate to try?
Out of curiosity...why did you leave out the pieces you did?
Quote from: ducpainter on September 30, 2012, 02:55:57 PM
I don't think it has anything to do with the torque or lack of.
I think it has something to do with the way the pressure plate fits.
Do you have the stock pressure plate to try?
Out of curiosity...why did you leave out the pieces you did?
Nope, I don't have stock pressure plate to fit it. I decided to leave the pieces out only because someone with the same hub drum did the same thing.
Quote from: Real Recognize Real on September 30, 2012, 03:37:13 PM
Nope, I don't have stock pressure plate to fit it. I decided to leave the pieces out only because someone with the flange spacer did the same thing.
I wish I had more for you. :-\
Quote from: ducpainter on September 30, 2012, 12:16:35 PM
Sounds like you don't have it lined up right.
Just take it off and keep turning it until you feel the splines engage and the pressure plate slides all the way in. It can definitely be felt
Quote from: Real Recognize Real on September 30, 2012, 01:33:45 PM
Ok, i re-oriented the pressure plate so the splines engaged, but no luck yet. Just for reference, I did not install the spacer with the new hub. The hub nut and the locking washer are the only things securing the hub drum. Any other suggestions?
I'd keep screwing with it, there must should be a way it fits
+1 on the pressure plate not engaging the hub teeth.
Take the springs off again and jiggle the pressure plate until it's teeth engage the drum teeth. You will need to push the last few mm against hydraulic pressure on the push rod to seat it home. You know it's home when press on it, as you can't as easily spin the pressure plate because it's teeth are fully meshed with the drum teeth. You gotta compress those plates fully because the slave cylinder hydraulics are pushing against you.
So press hard on that plate!
If that don't do it then you may have a plate stack height issue with the new parts which will require adjustment. Not serious, just requiring measurement and some friggin' around with plates.
I've got a bunch of stupid questions for you, hopefully they will help you find the issue:
1. when everything is assembled, if you pull on the clutch lever, does the pressure plate move out? does the pressure plate move back in when you release the lever?
2. when you turn on the bike and put it into gear, what happens when you release the clutch? does any part of the clutch turn? outer basket, pressure plate?
3. did you swap baskets as well, or did you just change the hub? if you changed/removed the basket did you bolt it back on?
4. do the splines/grooves on the new hub match up to those on the axle? see following pic (courtesy of yuu) try taking the plates off, and rotating the hub by hand with the engine in neutral and then in gear: it should spin freely in the first case and not in the latter.
(http://yuu.smugmug.com/photos/596421134_dsRGP-L.jpg)
hope this helps!
Quote from: koko64 on September 30, 2012, 06:09:15 PM
+1 on the pressure plate not engaging the hub teeth.
Take the springs off again and jiggle the pressure plate until it's teeth engage the drum teeth. You will need to push the last few mm against hydraulic pressure on the push rod to seat it home. You know it's home when press on it, as you can't as easily spin the pressure plate because it's teeth are fully meshed with the drum teeth. You gotta compress those plates fully because the slave cylinder hydraulics are pushing against you.
So press hard on that plate!
If that don't do it then you may have a plate stack height issue with the new parts which will require adjustment. Not serious, just requiring measurement and some friggin' around with plates.
Update - I haven't had the chance to work on the clutch in awhile do to work, but I'm back at it again.
I can confirm that at least the pressure plate is properly aligned and the hub drum teeth mate to the pressure plate.
The pressure plate rotates when the bike is in neutral and does not spin when in in the lower gears. It will spin in one of the higher gears, but I don't remember if it's 4th or 5th gear.
I measured the complete clutch stack height and it's 38mm ~ 1.5".
I assume the next step is playing with plates, correct? I saved my old plates so at least i did something correct. Any suggestions on what's next?
Just solved my problem. I figured that the engagement problem was due to the clamping force of the pressure plate was being overcome by the hub's torque. So I decided to add another steel plate closest to the hub and I have an operational machine again. [thumbsup]
It's funny to think that this problem was due to ~2mm.
Quote from: Real Recognize Real on October 14, 2012, 03:22:10 PM
It's funny to think that this problem was due to ~2mm.
Don't let anyone tell you otherwise:
size matters!!! [laugh]
Quote from: Real Recognize Real on October 14, 2012, 03:22:10 PM
Just solved my problem. I figured that the engagement problem was due to the clamping force of the pressure plate was being overcome by the hub's torque. So I decided to add another steel plate closest to the hub and I have an operational machine again. [thumbsup]
It's funny to think that this problem was due to ~2mm.
Basically the effect was the same as the PP teeth binding on the hub except it was the flat surface because of insufficient stack height.
Glad you got it sorted.