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Visionary
Posts: 8144
New Bohemia, VA | I've noticed a odd sound, other than the chirping that I thought I cured and feel it may be time to replace the wheel bearings. The belt is not too tight, in fact it is rather loose and there is no instability or screeching noise I would expect a wheel bearing to make. It is more of a hum than anything, and may be my imagination or my rear tire that needs replacing. It has been doing it for several days, and it is not get any worse that I can tell, it does change pitch in leans either. But to ease my mind, and after 130,000 miles I think I'll put new bearings in. I'll be picking up some aftermarkets, hopefully today, along with the seals. I'll let you know what I find. After doing some research, I feel we pay about 300% mark-up over the actual price just for a little bag that says "Pure Polaris". Take it how you will. |
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Visionary
Posts: 2027
Brighton, TN | Did you replace the belt and the pulleys as a set? I have found my belt will hum at different times, pending it being warm or cold. I have not changed any of the pulleys or belts. I thought it might have been bearings, but when I put it up on the lift, you could tell the sound and feel was from the belt and pulleys. I disregarded it, to wear. Just occassionally I hear it now.
I would expect life expectancy in our environment for those bearings would be around this time frame for you. I haven't replaced any of the wheel bearings either. They still sound tight and smooth. |
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Visionary
Posts: 8144
New Bohemia, VA | Thanks Po, I did replace belt and pulley. The pulley is suppose to be off a Vegas, and it had maybe 1,000 miles on it. The belt is new, and I've got the blessed curse of the chirp, by loosing the belt a little more and making sure it is aligned, it lessened it some. So, it just may mean the belt is humming, and it is continual, without variation. It is noticeable at 30mph and above. I'm going to have bearings and seals in hand, hopefully today, if that is the issue. I think I'll change them anyways the first good weekend, if they don't go before then. I'm only suspicious, it doesn't act like or sound like a wheel bearing, but it has but me a little on edge. The last time I checked they seemed to be fine, but I might be loosing my finger calibration. |
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Iron Butt
Posts: 763
Anderson, IN (48mi NE of downtown Indianapolis) | There are 200 of them for sale on ebay. Current bid is $22.50 for the whole lot. It would not make any difference if they are quality or cheap because with 200 bearings you could replace them with every oil change. And, give a few to your buddies just for being a buddy.
http://www.ebay.com/itm/200-SST-6304ZZ-DEEP-GROOVE-BALL-BEARINGS-20...
Actually, quality bearings are all over ebay for much lower price than stock. You can usually find the same stock bearings and seals if you prefer to stay with original equipment. I have not bought a bearing from a bike shop for the mountain bike, motorcross bike, or road motorcycle in many years. They are always lower price on ebay for the same original equipment. If you prefer a particular brand, simply type the brand name and the bearing number into ebay search.
http://www.ebay.com/itm/6304-ZZ-NSK-Ball-Bearing-/130806050832?pt=L...
http://www.ebay.com/itm/SKF-6304-2Z-Deep-Groove-Ball-Bearing-63042Z...
http://www.ebay.com/itm/NEW-IN-BOX-NTN-6304ZZ-2A-BALL-BEARING-/1709...
All the links above are for double shielded. These are suppose to be the best. However, I get the same life out of double sealed. Replace "ZZ" with "-2RS". I myself use single seal "RS" so I can push grease in the non-sealed side. I then put the sealed side towards the outside of the hub. A greased single seal has always lasted the longest for me.
If you don't type a manufacturer name in the search you will get thousands of results for chinese bearings. The price will look very appealing, but do fall for it if you want them to last. Buy quality name brand and pay extra or be stranded. Also, don't fall for the "equivalent to NSK" or "Replaces SKF". They will dimensionally replace quality names, but the longevity is not there.
All the same info works for seals too (except the shieled and sealed parts...obviously).
Edited by victoryvisiontour 2012-11-26 10:13 PM
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Rear Wheel Bearings
