Rear wheel bearing

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Re: Rear wheel bearing

Postby VTRamen » Thu Jun 30, 2016 11:36 pm

Removed rear wheel bearings today and here's what I found: two smaller ones are 17mm inside diameter, 40mm outside diameter, 12mm wide. The larger one is 20mm ID, 47mm OD, 14mm wide.

They are marked NSK 343 6203DU and the larger one is 297 6204DU.

I might also replace the dust seal for the large bearing. Not sure if the numbers mean anything as I will probably get the replacement seal direct from Honda, but it's C10 SOO (or SDD?) 28 47.2 7.

Tomorrow is Canada Day so everything's closed. Will report back with progress after my vacation.

Hoping that new bearings will clear up the tiny bit of side to side play in my rear wheel. Was surprised at how good they still looked.
- 1988 VTR 250
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Re: Rear wheel bearing

Postby Murdo1 » Fri Jul 01, 2016 3:54 am

6203 and 6204 are common sized bearings available worldwide. The DU will be the seal type.
The seal numbers mean 28mm ID, 47.2mm OD and 7mm thick. These would be available at engineering supply shops and be relatively cheap (less than $10 each here in Aus).
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Re: Rear wheel bearing

Postby VTRamen » Fri Jul 01, 2016 8:58 am

Great. Thanks for the info!
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Re: Rear wheel bearing

Postby VTRamen » Fri Jul 08, 2016 6:21 pm

Ordered bearings online from a Canada based supplier for about $15. $40 less than Honda, and they are also imported from Japan.

They should arrive soon, barring a postal strike!!! (Fingers crossed!)
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Re: Rear wheel bearing

Postby VTRamen » Wed Jul 13, 2016 12:26 am

Bearings arrived Monday and completed the job today. The wheel is nice and solid now, no free play whatsoever. Thanks guys, I saved giving Honda $40 by ordering similar quality bearings online. I probably could have gotten similar ones from a local shop for about the same price, but didn't feel like phoning and running around town. Plus, the shipping was free, just took a little longer.
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Re: Rear wheel bearing

Postby Murdo1 » Wed Jul 13, 2016 2:16 am

Good work. Now ready to ride?
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Re: Rear wheel bearing

Postby VTRamen » Wed Jul 13, 2016 7:14 pm

Absolutely. The little bit of a fish tail I had has disappeared! Performing and handling very nicely now.
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Re: Rear wheel bearing

Postby VTR250 » Sat Jan 13, 2018 3:01 am

Bumping an old thread (hope this is okay) but its in the same category..

Can anyone advise me if the right hand side bearing (after left hand side has been installed and spacer dropped in) needs to be hammered in until it reaches the bottom or until the spacer meets the inner race? My spacer appears to be to long and I find that hard to believe. If I hammer the bearing all the way in, the bearings lock up. I have the correct bearings, measured and ID numbers compared

I feel like this may be a stupid question :roll:
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Re: Rear wheel bearing

Postby Murdo1 » Sat Jan 13, 2018 2:37 pm

I don't have the book any more, but from memory the left side bearing is tapped in until it hits bottom of recess and the right side until it hits the spacer. I believe this is done to allow machining tolerances in the hub (but I could be way wrong).
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Re: Rear wheel bearing

Postby VTR250 » Sat Jan 13, 2018 3:29 pm

I have checked the FSM, but they aren't clear in how far to drive the RHS bearing. Manual suggests driving LHS in first, then spacer and RHS, but it doesn't actually say weather it should be hammered home or upto the spacer. Perhaps mass production causes variences, so do whatever comes first? I would suspect driving it in till it meets the spacer. Confirmation from someone who has done this job would give me peice of mind though. I really don't want a wheel bearing locking up :?
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