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Hooked
Piaggio MP3 500
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Location: Austin, TX
 
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Piaggio MP3 500
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Location: Austin, TX
UTC quote
Howdy,

I need the part number or the bearing size (ID,OD,width) for the ball bearing that sits behind the rubber buffer on the swing arm at the front of the engine. One side is rattly and needs replacing- and I can't find it anywhere on the parts diagrams on AF1. In fact, in the drawings, I can't even see the loop in the crankcase casting where the bearing is installed. And it doesn't show on the swing arm diagram. Has anyone replaced one of these things? It looks like a press fit into the crankcase casting.

Thanks for your help-
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Veni, Vidi, Posti
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
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@web-tech avatar
2008 MP3 500, 2013 BV350, 2020 Vespa Sei Giorni, 2008 Vespa S150
Joined: UTC
Posts: 8943
Location: Ashburn, Va. Home to the Internet
UTC quote
The bearing should have a Timken number on it. If it does have a number, take it to an auto parts store and they can order one for you.
Not an AutoZone. A real parts store like NAPA, Car Quest or a local auto parts store.
@klaborde avatar
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2009 MP3/250, 2012 GTS Super 300ie
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@klaborde avatar
2009 MP3/250, 2012 GTS Super 300ie
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Posts: 4308
Location: Marietta, GA
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I see the OP asked similar...
I am pretty sure scooterpartsco.com has them on their website.
The last time I looked they listed OEM, and US Parts.

I am curious, how do you knock that out?
Do you use a socket as a press, and knock it out?

I am considering power coating my swing arm in black.
I was thinking about removing the bearing, and then install a new one after the powder coat.

Keith,
Marietta, GA
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Gilera Fuoco 500ie
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UTC quote
HK1514
OP
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Hooked
Piaggio MP3 500
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Location: Austin, TX
 
Hooked
Piaggio MP3 500
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Location: Austin, TX
UTC quote
Thanks, Maksor!

To remove it, I'm planning on heating the outer crankcase loop with a heat gun and tap it out with a socket extension through the bearing on the other side. If it doesn't come out easily, I'll heat it with a torch. I'll post a pic or two if I get to it tonight.
@maksor avatar
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Gilera Fuoco 500ie
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@maksor avatar
Gilera Fuoco 500ie
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Location: Netherlands Olst
UTC quote
Crankcase isn't the swingarm

the crankcase bearing is 6003RS a ballbearing and those you can tap out with a hammer agains the bushings inner side

the 1514 is a needlebearing the ballbearing last longer then the needlebearing in the swingarm
2 and 10 are 1514
Forum member supplied image with no explanatory text
OP
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Hooked
Piaggio MP3 500
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Location: Austin, TX
 
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UTC quote
OK, that sounds more like the one I want- 6003rs, 17x35x10. The other pin bushings in the swingarm itself seem to be OK on my bike. Thanks Maksor! I knew you had the information I needed!
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2009 MP3/250, 2012 GTS Super 300ie
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2009 MP3/250, 2012 GTS Super 300ie
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Location: Marietta, GA
UTC quote
Squeazel wrote:
Thanks, Maksor!

To remove it, I'm planning on heating the outer crankcase loop with a heat gun and tap it out with a socket extension through the bearing on the other side. If it doesn't come out easily, I'll heat it with a torch. I'll post a pic or two if I get to it tonight.
Thanks on Picture...

Keith,
Marietta, GA
OP
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Hooked
Piaggio MP3 500
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Posts: 312
Location: Austin, TX
 
Hooked
Piaggio MP3 500
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Location: Austin, TX
UTC quote
Maksor is right, to remove, just tap it out with a socket on an extension. But the bearing number is 6004RS, 20x42x12 sealed ball bearing rather than 6003RS.

Here's a pic. I don't think you need to remove the engine to replace it- just the bolt and the rubber buffers, let the swing arm frame member drop down, remove the spacers and drive out the bearings. I didn't need any heat, but I'm going to put the new bearings into the freezer for installation; then they'll just slip right in without pounding.
Forum member supplied image with no explanatory text
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