ok, time for a rant. im trying to finish up my 900 motor swap project so i can ride, and the only effing thing holding me up is my clutch slave!!! first off, some background to this. i had a 2001 M600. i installed a 1996 M900 motor into that frame. im now trying to install the clutch slave on that 900 motor. are all monster clutch slaves the same? i have the one from my 600 and one i got with the 900 and they seem the same. however, when i fill and bleed the system, the piston in the slave seems to bottom out in its bore, without even beginning to actuate the clutch pushrod. my lever goes about halfway in, then is solid. [bang]
anyone have any ideas? could my clutch pack be stuck disengaged, causing the pushrod to be stuck too far in?? or is my clutch slave the wrong one and needs a longer stroke? or could i use a spacer inside the slave bore?? im soooo frustrated ive spend 3 days brainstorming, maybe im just missing something simple and stupid. ive already checked and made sure my clutch pushrod is the longer one for 900's. HELP!
Do you have the clutch rod from the 900 installed and do you have the the little receiver piece fits into the throwout bearing that the push rod seats into?
i do have the correct pushrod, im not familiar with the reciever peice you speak of....could that be what im missing? would that extend the legnth of the pushrod? where should that reciever peice be located?
on the clutch itself, the rod fits into it. it's sort of mushroom shaped so it presses on the bearing in the plate.
theres no way for me to know i guess unless i take apart the clutch right? it should be in there i would assume...no reason for it to be out.
depends on what year 900 motor you have and which model slave you have.
On my older 95 900 motor, i had the older generation yoyos and i lost that piece so i used a bunch of washers and made one.
this is a 95 or 96 900 motor. how easy is it for me to see if i have this peice? it cant just fall out right? its something that would have to be removed with the clutch apart ?
Take off the clutch cover and look at the bearing in the pressure plate. The piece in question is the little socket in the bearing that the clutch push rod fits into. Check that the pressure plate can move when you pull the clutch lever
It's my understanding that the clutch slaves vary, if you have a two phase altenator then you'll need a new slave cyl...specific for your ride...Sorry, as I said, It's my understanding from numerous readings on this and other forums and from sponsors webpages[yes, i use them to learn].
M620d, i was half wondering if that was the case, but a lot of the aftermarket slaves seem to fit all model years 95 to 2001. if i just need a new slave, i will go ahead and buy one, but i just didnt want to if i didnt have to. unfortunately, my duc dealership has been closed all weekend so i cant get a straight answer on whether i need a new slave cyl.
post up a pic of the slave, and a pic of your bikes slave side.
Also take the clutch plate with the rod and push it all the way into the bike then measure how much of the rod is sticking out.
I am almost positive you are missing that little piece that DDDDan is talking about. The rod is just too short if that is the case. Youll need that spacer.
'01 and newer bikes have an OEM slave with a larger bore, therefore a shorter stroke. They also have a longer push rod to compensate. Manufacturers of aftermarket slaves have different ways of dealing with this. If your slave is OEM, you need the push rod that goes with that slave. If not, tell us what slave you are using.
I had the same issue when I wrecked the Evoluzione slave on my ST2 and replaced it with a stock slave. I made a "shim" for the rod out of an old bolt that I sawed off, and put that in with the throwout bearing. At least you know that you've bled all of the air out of the system when it gets nice and hard when it bottoms out.
Someday I'll try to track down the proper length of pushrod, but everything works well enough for me right now.
hey guys, so i just cut a peice of an old clutch rod i had, and put it into the clutch slave cylinder bore, essentially lengthening the clutch rod. it seems to be working, but im not sure how it will hold up when the engine is running....i will keep you posted. im a bit worried since my clutch rod seems to be spinning a little.... :o
Quote from: darkduc7 on June 17, 2009, 04:02:15 PM
hey guys, so i just cut a peice of an old clutch rod i had, and put it into the clutch slave cylinder bore, essentially lengthening the clutch rod. it seems to be working, but im not sure how it will hold up when the engine is running....i will keep you posted. im a bit worried since my clutch rod seems to be spinning a little.... :o
it does that. as it is in contact with the clutch
rod is fine if its spinning, there is a bearing on the clutch plate side, as for the clutch slave side, there should be a bearing in there too. what you essentially did was make an extention, which is what yoyodyne does on their unit.
it should be fine so as long as nothing breaks, which i dont see why anything would at this point.
how long is the piece? if its too long it will cause the clutch to slip and youll be loosing power to the wheel and you're plates will be burnt up rather quickly.
i havent measured the extension i put in, but i made a short one first, and found it didnt quite fully release the clutch ...i could rotate the rear wheel with it in gear, but with binding. so i made one 2 or 3 mm longer, and it now rotates with no audible binding or anything. i do get a different pitch rattle/scraping noise when i disengage the clutch with the motor running...i know dry clutches are noisy, but is that normal? its different than when the clutch is engaged with the tranny in neutral. it sounds like something is rubbing that shouldnt be, but if thats a normal sound, i kinda like it...sounds mean [evil]. my other monsters/previous bikes had a wet clutch, so this is a new world for me.