New Secondary Bushing Binding

Ding

Ding

Darn Tootin'
Joined
May 8, 2003
Messages
3,603
Age
63
Location
Howell, MI
I just replaced the inner secondary bushing (the one in the moveable sheave), and it is binding real bad. In fact I can hardly get the sheaves to move at all. This is the first one that I have ever had do this on me.

At first I thought I had a bad bushing so I replaced it with another new one ($$) but it is binding also. There aren't any nicks or burrs on the bushing as it was put in with the proper Yamaha tool. Also the shaft on the fixed sheave is clean with no nicks or burrs. In fact I polished it to a fine sheen with Flitz after cleaning off with a fine ScotchBrite pad.

Has anybody ever had this happen before?

Anybody got any suggestions?
 
sticky secondary

the bushing needs to be honed or reamed out so it moves by hand easily but is not loose on shaft.
 
If I hone the bushing it will tear the coating that is on it.

I guess I could somehow turn the outside of the bushing.
 
It could be the shiny surface you've made for the bushing to slide on...The bushing material needs a slightly rough surface to slide on, as the material fills in the grooves...

I'd take some fine sand paper and go around it a few times (on the bushing), then try it again. Good luck!
 
Hey John how ya doin man?

It seems that the bushings are just too tight. This is why I did the polish job in the first place. I did not replace the Helix bushing because it isn't worn very much. If I place the helix on the shaft for the moveable sheave it moves freely without any binding, so I know the shaft is ok.

I had originally cleaned it off with Scotchbrite pads so it had a degree of roughness to it. The service manager at a dealership recommended polishing it. I have never had one do this before.
 
bushing

honeing dosent hurt the bushing. sanding does the same thing but might make bushing out of round.use brake cylinder hone and oil to hone it out.
after it fits properly use lube recomended by manual/dealer. i do this all the time at work with no problems. 8)
 
Maim:

Are you aware that these bushings have a coating on them. Some say it is teflon, some say it is Grafoil. Whatever it is, if you hone it or sand it, it tends to peel off. This makes matters even worse in my experience. Are you saying that you have a method that works with these specific type of bushings?
 
bushing

i looked at these bushings and they look the same as the ones i install on clutch housings for fork on a transport. we put them in with tool all the time and still have to ream them out. with proper lube (a must) they make it to next service interval and these trucks are used a minimum of 12 hrs a day in town from light to ltght. usually lasts 2-3 yrs before any movement becomes excessive. :wink:
 
Hey Ding, had a buddy with an 02 xc-800 that had the same problem. Turned out the shiv was distorted and as a result the hole the bushing went into was not round causing the bushing to bind. I thought it sounds impossible but thats what happened. Check you shiv.
 
I have the same problem right now on 01 srx, binding bushing. If you guys figure out the problem, please let me know.
 
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