Grinding sound

20596 Views 43 Replies 13 Participants Last post by Featherstone, Feb 26, 2012

BOHTR

Discussion Starter · Feb 5, 2012

I think I have a problem in the clutch on my '06 660. I'm hearing a grinding sound from what appears to be inside the clutch somewhere. It doesn't matter if it's in gear or in neutral......sound is still there. I do all of the maintainance on my Grizz, but I've never touched the clutch....it has always intimidated me. The clutch isn't slipping and the bike runs and drives fine. Any ideas ? Thanks......Rick

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awames76

· #2 · Feb 5, 2012

remove the floor board and the side cover and take a look, theres nothing to be intimidated about when taking the clutch cover off, going into the primary is not bad either, take lots pics if u need too, there is alot of help and pics and other threads on here. there is also grizzhopper.com

does it do it when u let off the throttle, idle, on the throttle, constant rpm,

BOHTR

Discussion Starter · #3 · Feb 5, 2012

One of my problems is, I don't know what I'm looking for or at. I'm completely clueless about the clutch on my machine. I consider myself fairly mechanically inclined, but I have never messed with a clutch before. As far as your question, yes....I can hear the the noise all the time. It's more prevalent at idle.....mainly because there is less engine noise.

awames76

· #4 · Feb 5, 2012

someone else might have more ideas but id take the cover off and see if something u can see thats not right, but take pics and post them up.

if your carefull u can start it up with the side cover off [moving parts] rev it alittle to make the primary to work in neutral. but it might be in the wet clutch or a bearing.

mud lawdawg

· #5 · Feb 5, 2012

Since you said your never have been in the clutch, Im betting the roller weights need to be cleaned. Here is a direct link to Grizzhopper. It will show you step by step how to do this. Shift Lockout OR

When you start the bike, does it jump forward any? If it does, then your one way bearing is going out.

With the information you have given, I bet the clutch just needs to be serviced. If you have any questions just ask. I serviced 3 clutches yesterday. ONce you do it you will kick yourself for not doing it before. Its so simply and takes less then 30 minutes when you know how to do it.

BOHTR

Discussion Starter · #6 · Feb 7, 2012

Nope.......the bike doesn't jump any at all on start up. Thanks for the link, lawdog.......I'll check that out...and I hope you're right and servicing is all it needs. Like I stated earlier, I really don't know how this CVT clutch works.......are the weights turning even in park, idleing ? A few more questions.....I've read a number of posts about going to a greaseless weight system......pro's ?.....con's ? where would I get this system from ?......Price ?

mud lawdawg

· #7 · Feb 7, 2012

the good thing about the greaseless weights is the lack of service it needs. You will hear more rattling from the greaseless weights.

I personally dont know any cons to going greaseless. However, IM sure someone will have some.

You can find them on ebay, hunterworks, and several other places.

Hammer07

· #8 · Feb 7, 2012

Rick, good to hear from you!
if you haven't been riding much you may have a critter nest in there! the clutch should NOT be spinning at idle, are you sure it's coming from the clutch side?

BOHTR

Discussion Starter · #9 · Feb 7, 2012

Hammer ! Howdy, stranger ! The Grizz has been getting worked pretty hard here lately.....working on the property I lease for hunting. So much so, that I've had the gas boiling issue ( which I've never had before) The noise definitely sounds like its coming from the clutch area to me.....but if nothing's moving at idle or in park, I wonder what it could be ? It's an '06 model and the clutch has never been touched so at the very least, it needs to be serviced and cleaned. I'll probably just bite the bullet and do the greaseless weights and a shim mod while i'm in there....I'm pretty nervous and anxious about tearing into the CVT, but I guess thats the only way to learn.....I figure, if I can't get everthing back together I can just take a bag of parts to a dealer and them put it back together......lol

Hammer07

· #10 · Feb 7, 2012

hahaha
the pictures, etc on Grizzhopper are pretty complete and the video done by Butch and the Modfather is good also. it's really not bad at all. take your time, pay attention to what you're doing and you'll do fine!

mud lawdawg

· #11 · Feb 7, 2012

Actually, the clutch does spin alittle when in park. Its not very fast but it does spin.

Like stated above, its a very simple job. Just take your time and it will be easy.

I wouldnt be riding the bike until you fix the problem. It could also be a roller weight that has slipped and turned sideways.

Hammer07

· #12 · Feb 7, 2012

your clutch may be spinning some at idle if you have changed the wet clutch springs, but if you have stock springs, it shouldn't be

Sasquatch

· #13 · Feb 7, 2012

As others have already suggested, your FIRST STEP should be to disassemble (at least partially) your clutch for a thorough inspection. Look for any obvious signs of debris (such as a mouse-nest full of dog food for example), small pieces of gravel, dried up mud, ect.
Also look for any signs of excessive wear such as shredded rubber or plastic from your belt or plastic clutch cover. Inspect the surface's of bothe the front (primary) and rear (secondary) clutch sheaves which should be smooth... all this can be done by simply removing the plastic clutch cover!

If everything appears to be in proper order, you may need to pull your front primary clutch sheave assembly and open it up for inspection/cleaning (probably past due to be done anyway)... Again, look for any forign debris or sign's of excessive wear. Look for flat spots on the roller weights and replace if needed. Repack with fresh grease (or go greaseless!)... if you get stuck along the way or have any questions, dont be afraid to post them up!

Not sure if you read my clutch install thread, but I posted quite a few pix that will give you an idea of the procedure. Even though my machine is a 550, the parts and procedure are very much similar to your 660... here is a link - http://grizzlyriders.com/forums/official-clutch-forum-new/4213-time-550-clutch-mods.html

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Featherstone

· #14 · Feb 8, 2012

If you buy Dr pulley sliders you may have to file them so they don't stick. I just went greaseless last week and had to file them. There is a thread about it some where. Not a big deal but something to watch out for. Overall it is pretty easy.

Featherstone

· #15 · Feb 8, 2012

The thread is up in the stickies. By the modfather
http://grizzlyriders.com/forums/off...0-greasless-roller-slider-700-owners-l-k.html

Silver Griz

· #16 · Feb 8, 2012

BOHTR, If you have an 06 that has never had the CVT cleaned than its certainly time. If you stay with greased primary then make sure you use the proper grease. You must use a marine grade grease. Its an easy but messy job.

gr rules

BOHTR

Discussion Starter · #17 · Feb 8, 2012

OK......I've decided i can do this. I just ordered greaseless weights and sliders....also got a 1mm shim. I didn't notice until after I placed the order that the weights were listed as "Yamaha Rhino" weights....These are the same as the Grizzly, right ?? I sure hope so. I'll buy a 22mm socket for the primary nut and I'll have everything I need. Hopefully the belt is still in good shape. At what width would it need to be replaced ? Thanks for all the info and support. I'll definitely have to report my success and or failure....lol. I'm also hoping that this will solve the grinding sound issue....

bluesmanjesse

· #18 · Feb 8, 2012

Hey BOHTR, good to see you here man! I highly recommend going to the greaseless setup, another bonus of it is if you get in too deep and get muddy water in the CVT you can just drain out the water and keep on riding. There are some videos of a rhino CVT on hunterworks website,it's basically the same as the Grizzly. You might need a huge set of vice grips or a ratchet strap to hold the primary if you don't wanna use an impact on it but it's not hard to swap out to a greaseless setup.

AZ08Grizz

· #19 · Feb 8, 2012

BOHTR said:
OK......I've decided i can do this. I just ordered greaseless weights and sliders....also got a 1mm shim. I didn't notice until after I placed the order that the weights were listed as "Yamaha Rhino" weights....These are the same as the Grizzly, right ?? I sure hope so. I'll buy a 22mm socket for the primary nut and I'll have everything I need. Hopefully the belt is still in good shape. At what width would it need to be replaced ? Thanks for all the info and support. I'll definitely have to report my success and or failure....lol. I'm also hoping that this will solve the grinding sound issue....

:bigsmile1: If you don't find anything obiviously wrong when you take the primary apart it would be a good idea to go a little deeper while you have it apart and inspect the one-way bearing and the wet clutch.

mud lawdawg

· #20 · Feb 9, 2012

Just take your time and you will be fine. Just read the site I gave you and you will do fine. Like stated above, if everything looks good to you, then you will need to dive furter into the clutch. Which is still simple.

I still believe the noise your hearing is from lack of maintence.

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