Change transmission bearing - 2004 Piaggio X9 Evolution 500

When you step on the clutch,you are disconnecting the power flow to the transmission, and because the noise goes away when the transmission is disconnected from power,a bearing or bearings in the transmission may need replacing.Most likely a main shaft input bearing.BUT while the trans is out,the cost of changing ALL the bearings is not much more than changing one of them.Also,a good used trans would work too.

I haven't had the pleasure of working on yours yet, but. Newer vehicles do have a carrier bearing on the passenger side of the car. Between the tire and transmission. You can pull it off and take it some where to have the bearing put on the shaft.(it is pressed on) If your talking about a differential bearing, then the transmission has to be pulled and opened up.

It sounds like the problem is with your clutch. Are you sure you properly connected the transmission to the engine? Is it automatic or manual transmission?

The throw out bearing is in the clutch release mechanism in the right side cover of the transmission. It is a "radial bearing" that is about the size of a nickel and is held on by a minuscule little snap ring. If the clutch cable is not adjusted correctly and keeps the bearing constantly engaged (no free play in the lever) or the oil slinger is left off the clutch release rod, the bearing will overheat and fail.

To change the bearing, drain the transmission and remove the right side end cover of the transmission. The bearing should be right on the end of the rod that operates the clutch. It consists of two hardened washers, a flat radial bearing, and a small circlip.

For a drawing go to: http://www.bikebandit.com/1983-harley-davidson-flh1200/o/m778#sch163005

Good Luck
Steve

Are you sure this isn't the clutch release bearing making noise, I bet it is.

Two bearings in that model One in tub will be leaking water if bad. One on the lower end of transmission.which is part of the transmission. Whole tub basket unit must be removed from the case to replace either the tub bearing and seal or the transmission.

I had the same problem.. About a year of that problem i lost 5th gear and i had to replace my transmission.

Here are a series of free videos to help you with your bearing problems and how to fix them
For all your free videos on appliance repairs remember to mark us down and leave feed back please
For all your parts visit our sitehttp://www.apart4u.co.uk

This first video shows you how to diagnose the problem


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The next Hotpoint video is on how to take the drum out


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This Hotpoint video will show you how to change the bearings in the drum tub


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the last one will show you how to change the spider or drum support as they are known


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Are they bad too? If so, yes. If not, no. Look for chopped tires, or transmission bearings.

Maybe your car U join bearing damaged,check the bearing first.If the noise from the transmission, Change the transmission oil and filter, This is the cheapest way, sometime you can solve this kind problem, but if after you change transmission oil, still have the whistle noise, probably you have to change the transmission.

I suggest that if you can take your car to a transmission shop and let them give you a quote and also get their opion, I think it is better than I give you my opion without hear the noise.
Good luck