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Joe Breaux

By Joe Breaux
in Massimo UTV SxS Forum

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Joe Breaux

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Well, overheating finally resolved.. 500 miles on MSU500 now , runs great... Heres the rub.. transmission seems to be making a whining noise in gear only .. increases with speed.. anyone got any ideas?  Oil was just changed last month and is full and clear.   Just cant express how happy I am with Massimo!!! NOT!!!

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Joe Breaux
Joe Breaux

Well, overheating finally resolved.. 500 miles on MSU500 now , runs great... Heres the rub.. transmission seems to be making a whining noise in gear only .. increases with speed.. anyone got any ideas

Joe Breaux
Joe Breaux

well, with motor cover off,  riding in the bed, theres so much noise going down the trail that I cant hear the whining  ,so I cant isolate it with a hose .. Put cover back on, theres the whine again..

Joe Breaux
Joe Breaux

noise still there, but damn thing is running great..  no issues ...new adjustable temp fan control works perfectly..   temp is in a safe range all the time now.   . hopefully it will continue 

Joe Breaux Mentor

Joe Breaux

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no, its fully engaged, pulls normally. no noise shifting into or out of gear or while  idle in gear.. just a  whine as you drive that increases with more power.. no noise in neutral or reverse .. sounds kinda  like a power steering pump low on fluid.. but theres no power steering on it 

Joe Breaux Mentor

Joe Breaux

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not yet... My ATV mechanic is out of town for 2 weeks  .. seems  like its coming from  the CVT .. Continuously Variable Transmission section.. maybe the drive belts are already worn out at 500 miles? .. Would not surprise me.. Such poor quality parts in this thing .. just spent $1500 on it to cure the overheating  .. I really regret the day I let my Dad talk me into buying it instead of the Honda Pioneer.. I now have as much in this one as the Honda sold for.. oh well... live and learn.. 

Joe Breaux Mentor

Joe Breaux

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2 hours ago, Travis said:

Kawasaki's CVT's in their mules whine from day one at increased speed.

Really? I was not aware.  maybe it s not a big deal then... I sure hope so.......... but 500 miles on it without whine..seems odd it just starts now.. and you know how  I have  confidence in Jackassimo quality 

Travis Grand Master

Travis

Posted
Posted
11 minutes ago, Joe Breaux said:

Really? I was not aware.  maybe it s not a big deal then... I sure hope so.......... but 500 miles on it without whine..seems odd it just starts now.. and you know how  I have  confidence in Jackassimo quality 

 yeah, once you get up to about 12-15 mph, there is a slight whine, but you're right, 500 miles with no whine, then all of the sudden... that's sounds suspect.

Joe Breaux Mentor

Joe Breaux

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this whine starts at 3-5 mph and increases as you go faster in either LOW or HIGH gear positions.. .  does not make it in neutral so its not engine , has to be in that CVT contraption.. 

Travis Grand Master

Travis

Posted
Posted
4 hours ago, Joe Breaux said:

this whine starts at 3-5 mph and increases as you go faster in either LOW or HIGH gear positions.. .  does not make it in neutral so its not engine , has to be in that CVT contraption.. 

is your CVT similar to this? spacer.png

 

 

Travis Grand Master

Travis

Posted
Posted
29 minutes ago, Joe Breaux said:

I believe so.. it use belts on tapered pulleys  to change the gear ratio according to rpm vs load .. I hope the noise is just the belts humming 

well if it doesn't do it in neutral, then it's not the CVT belt or pulleys as they operate the same regardless of what gear you're in.

something internal.

 

Joe Breaux Mentor

Joe Breaux

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Well, I guess when it breaks 5 miles in the woods, I ll find out  what is making the whine .. and you know thats when it will break , not unloading from trailer .. I m pretty sure its not the wet clutch or the gear assembly or bearings , because the oil is clear and clean ,no metal or clutch material in it, no burnt smell... and no noise at all idling or while revving engine .. so its in whatever turns with driveline.. but not coming from rear axle area..

  • 2 weeks later...
Joe Breaux Mentor

Joe Breaux

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Well, I asked for  help from Motorcycle Doctor that someone suggested.. They said jack it up on jack stands and run in gear to isolate noise.. seemed reasonable..  tried just rear wheels.. makes no noise, tried all 4 wheels off the ground... nothing.... not a peep.. just like revving in neutral.. NO NOISE!  . put it back on ground and the whine is still there. in high or low  range and 2 or 4 wd  .. scratching my head... 

Joe Breaux Mentor

Joe Breaux

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with only 500 miles on it seems unlikely its a wheel bearing or U-joint.. There is no slack in any of them.. I checked.. and they were all spinning 15 mph on jack stands.. no noise.  The noise isnt coming from a wheel, it sounds like a transmission noise, like a power steering pump or trans pump  but its not fluid drive, its belt... If it was wet clutch it would make noise on take off or idle but it doesnt.. It starts about 5 mph and increase with speed......   its just more weird crap that only Massimo seems to suffer from .. I guess when it breaks , I ll know what it was. ..................

Otherwise its running great.. I installed an adjustable temp switch  [ from EBAY , $19 } into the circuit where the old radiator thermoswitch connected,   with a probe to radiator . and set it to keep engine at 140-150 degrees  now that winter is here.. seems to work just fine.. No more overheating issues since Yamaha parts installed . Starts instantly, idles perfectly, plenty of power on trails.  4 WD works fine ,,,,JUST THAT DAMN WHINING from under my ass  .. annoying as hell.. 

T-boss 410 Experienced

T-boss 410

Posted
Posted

How about a bearing on one of the output shafts? My riding mower had a bad bearing on one of the spindles for the deck, but it didn't have any play at all. But it would definitely make noise when the blades were engaged. 

Just a thought. 

T-boss 410 Experienced

T-boss 410

Posted
Posted

Sounds like you've put some thought into this. You no longer have to be concerned, and you get some measure of revenge on the new boyfriend. It's genius in its simplicity!!!👍 But, can you really run at 20mph?

Travis Grand Master

Travis

Posted
Posted
1 hour ago, T-boss 410 said:

Well, there ya go! Do me a favor, and get someone to record this. Excellent entry for America's Funniest Videos!

i'll film  for him if i can get a split of the funds.....

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