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Hellacious engine vibration.

290 Views 8 Replies 2 Participants Last post by  CamoHunter660
Hello I have a new to me 2004 rhino 660. It starts, runs and drives. But theres a extremely terrible engine vibration I'm trying to get fixed. The previous owner told me he had just replaced clutch weights so I just figured he done something wrong. It does it in all gears and in neutral. It not there at idle and begins just above idle and gets worse as rpms rise. I first pulled belt and dry clutch and problem still exist. Whats your suggestion on where to go next?
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Check the motor mounts.
I did inspect those already. They don't have anything i would consider to be excessive movement. I used a pry bar to move them around a little. I believe its something internal out of balance. I'm going to replace the wet clutch next.
Before you go tearing into the engine, remove the clutch sheaves (at least the primary) and start it up. See it the vibration is still there.
Before you go tearing into the engine, remove the clutch sheaves (at least the primary) and start it up. See it the vibration is still there.
I did already as stated in original post. I pulled the primary and it was still there.
Is there any evidence that the engine has been apart? The only other thing that comes to mind is a misaligned balancer or bent crankshaft.
Is there any evidence that the engine has been apart? The only other thing that comes to mind is a misaligned balancer or bent crankshaft.
yes its evident its been apart, I dont know any history of it but thats what I'm thinking aswell. I'll have to disassembled and inspect.
That blows. Cleaning up someone else's hack job is never fun.

I bet the balancer marks are off. While you're in there you may as well replace the oil pump chain. They are known to stretch out and there is no tensioner. In extreme cases the chain will wear a groove in the case.
That blows. Cleaning up someone else's hack job is never fun.

I bet the balancer marks are off. While you're in there you may as well replace the oil pump chain. They are known to stretch out and there is no tensioner. In extreme cases the chain will wear a groove in the case.
Yes sir. I'm not super familiar with them but I planed on replacing the chain aswell. Its pretty loose already.
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