Check your belt and clean your sheave!

[pronstar]

So I noticed that my Rhino's CVT didn't seem to be "shifting" right.
My top speed had dropped considerably as well.
Thought all of this was odd, since I have less than 700 miles on it.

Took the sheave apart this weekend, and it was completely packed with hard, dirty grease. And the rollers were hardly moving.

Also noticed that my belt was about 1/10th of an inch worn, so I replaced that as well.

I think the lesson is:
You can't just go by mileage for some services.
So from here on out, I'll be checking my sheave and belt every season :thumbsup

 

[djunkie]

:smackhead:smackhead

www.riverdavesplace.com/forums/showthread.php?t=30266

 

[pronstar]

Yours looks like the dirty grease was packed in there good on yours.
I had to chisel it out with a screwdriver on mine...thankfully it didn't fail spectacularly like yours :thumbsup

 

[djunkie]

Yours looks like the dirty grease was packed in there good on yours.
I had to chisel it out with a screwdriver on mine...thankfully it didn't fail spectacularly like yours :thumbsup

Ya I had to use a screwdriver also to get the old stuff out too. Its working awesome now.




Any minute now RiverRat Mike will be here telling us how he has 5,000 miles on his with no problems. :skull:skull

 

[pronstar]

Any minute now RiverRat Mike will be here telling us how he has 5,000 miles on his with no problems. :skull:skull

LOL
Sorta like the guys on the diesel forums who get 25 mpg while towing...

 

[Cole Trickle]

Ya I had to use a screwdriver also to get the old stuff out too. Its working awesome now.




Any minute now RiverRat Mike will be here telling us how he has 5,000 miles on his with no problems. :skull:skull

did you use your old sheave or go all new?

If mine hasn't gernaded yet can I just change out the weights and belt for improved performance?

I need to do this/adjust valves before the season starts.

 

[pronstar]

did you use your old sheave or go all new?

If mine hasn't gernaded yet can I just change out the weights and belt for improved performance?

I need to do this/adjust valves before the season starts.

I just cleaned up my sheave/rollers.

When you regrease it, you don't need to use a lot of grease. A small tub of $15 Yamaha Ultramatic grease is enough to regrease your sheave about 100 times.

Measure your belt and replace it if it's worn. Buy a new belt - you can use it as a spare - and measure the width with a micrometer. Then just compare to your old belt. I'll now use my old belt as a spare...

There are new sheaves and belts that can give you different type of performance gains. I've got a KMS sheave with their duner's kit...the sheave gives you top-end speed, and the duner's kit replaces the weights and spring to allow the engine to rev higher at lower speeds - think of it as a higher-stall torque converter.

I think everyone should get a new sheave, the duner's kit or any of hte other spring/weight kits are personal preference, depending on what you're looking for.

 

[Ivan Dan]

Where did you guys buy the belt from? I really need to pull my sheave apart and regrease and put a new belt on. I haven't had any issues with it but I'd rather do preventitive maintenance then wait until it breaks.

 

[GET SOME]

Sheeve party at brandins... Get the djunkie set up... You can spin tires in a rhino..

 

[Cole Trickle]

Where did you guys buy the belt from? I really need to pull my sheave apart and regrease and put a new belt on. I haven't had any issues with it but I'd rather do preventitive maintenance then wait until it breaks.

factory belt is the ticket....pretty sure utv crap has the best deal

 

[djunkie]

did you use your old sheave or go all new?

If mine hasn't gernaded yet can I just change out the weights and belt for improved performance?

I need to do this/adjust valves before the season starts.

My sheave was ok. After you clean it you'll have to inspect it well and make sure there's no cracks in it. I know what to look for now so when you do it let me know. Yes you can just change the weights and install a stiffere spring and it'll help a bunch. Also your gonna have to take your cage off to get to the valves.

 

[djunkie]

Sheeve party at brandins... Get the djunkie set up... You can spin tires in a rhino..

It also helped that I got the exhaust and a good tune. Made all the difference. Give me a heads up when you guys wanna do them all.

 

[Cole Trickle]

My sheave was ok. After you clean it you'll have to inspect it well and make sure there's no cracks in it. I know what to look for now so when you do it let me know. Yes you can just change the weights and install a stiffere spring and it'll help a bunch. Also your gonna have to take your cage off to get to the valves.

cage is gonna come off for sure... at the same time I will trim and re spray the plastics.

Aug/sept will be go time

 

[pronstar]

You can adjust the valves by leaving the cage on, but it's not easy to do... I think it's one of those "six of one, half dozen of the other" dealios if you want to remove the cage or not...my cage is a complete PITA to take off.

Either way will add time to adjusting your valves, which is a simple operation.

Everything I've read says the foactory Yamaha belt is the best, BTW.

 

[speeddmn]

I have about 3000 miles on mine and I agree that the Yamaha belt works the best. I have tried a couple of supposedly better aftermarket and they don't work as well as the factory belt. I also have the Kms sheeve and my stock 06 rhino did 60 mph yesterday.

 

[NuckinFutz]

I had my rollers go to shit and have since upgraded to Hunterworks.com greaseless rollers and am happy and would recommend them. 2007 and older requires a new outer plate, but the entire upgrade was about $100 bucks and I fell it was money well spent. I haven't noticed any increased noise from the clutch and now there is no grease inside to collect dust.

 

[BigWilly]

Thanks for the reminder. Checked mine yesterday., Good thing. Needed a new belt.