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Installing bearing (Read 77 times)

Flint

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Installing bearing
02/11/17 at 11:01:09

I was working on my S40 doing the rubber damper shim job and wondered why the Suzuki DR650 rarely has the same issue. I have a Dr650 as well.

It turns out the DR has a bearing in the hub with the sprocket on it. The DR 650 has a total of three bearings on the axel. I measured up the bore of the S40 driven pulley hub and it turns out it will take a standard SKF bearing. 36x17x8 mm. I have no idea why Suzuki chose not to put one in the S40.

Has anyone installed one in the S40 hub? It looks like you would have to make some spacers is all it would require.

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smokin_blue

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Re: Installing bearing
Reply #1 - 02/11/17 at 11:12:48

Take a closer look. Your pulley hub should have a large bearing in it that lines up with the centerline of the pulley. It is listed on the parts diagram as a 25x62x17. There is a shouldered spacer that brings that diameter down to match the axle as well as making sure the inner race takes the load as you tighten up the axle. If you don't have those parts you are missing some.

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Flint Full Member Offline SuzukiSavage.com Rocks Alberta! Posts: 124	Re: Installing bearing Reply #2 - 02/11/17 at 11:16:18 Thanks for the fast reply Smokey, I will certainly check that.
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oldNslow Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 2683 Rochester, NY Gender:	Re: Installing bearing Reply #3 - 02/11/17 at 11:25:56 http://www.bikebandit.com/oem-parts/2006-suzuki-boulevard-s40-ls650/o/m147605... #15, #17
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Flint Full Member Offline SuzukiSavage.com Rocks Alberta! Posts: 124	Re: Installing bearing Reply #4 - 02/11/17 at 11:32:38 I found it. The bearing is shot. It turns smoothly but has a lot of up and down play. Cheap easy fix it looks like.
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Dave

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Re: Installing bearing
Reply #5 - 02/12/17 at 04:39:47

I believe that some of the pulley wobble issue is caused by the an improper machining of some of the pulley hubs. The stub that extends into the rear wheel hub is cut too small, and there is too much play. At first I thought they were all machined this way - but recently I bought an earl pulley hub and found it to be machined properly. When the fit is snug, it helps to keep the pulley hub in alignment and takes eccentric loads off the pulley hub bearing.

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