jdzx14
Expert Class
Posts: 412
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posted January 11, 2009 02:51 PM
When to change wheel bearings?
I am curious, when should you change or inspect the front and rear wheel bearings on the 14, i cant seem to find my manual, but reason i am asking, I have a buddy with a 06 636 with 18k on it and had some tires put on recently and his front bearing fell apart when removed, the guy at the shop told him they should be changed about every 8-10k miles. Now i work at a car dealer as a tech, and i have never had to change wheel bearings, hub assembly or standard type that early, is a bike different? And also, i am about to powdercoat my wheels and install new tires, and will be doing it myself, how bad is it to change them and i assume there are an inner and outer? Thanks in advance. Oh my bike has 9500k miles.
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2007 Black ZX-14
Lowering links, Brocks Strap Kit, Muzzy Full 4-2-1, No files, PC3, BMC Race filter, 6 inch extensions,16/44, Shinko 003 Ultra Soft..... SOLD!!!!!
  
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ratbyk
Expert Class
Posts: 179
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posted January 11, 2009 04:51 PM
Avoid pressure washing around hub seals/brake calipers and similar and you will likely not have to worry. I've ridden bikes for decades, some bikes I have put over 100,000 on and never changed a wheel bearing. Each time I change tires/have a wheel off for any reason I tamp a little grease into the wheel bearing area, coat the axle etc before slipping it back in. Seems to have saved me any extra expense or wheel bearing probs on the road.
The pressure washing seems to be the killer, it washes lubricants away which leads to the failures.
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Bawls
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re-learning to ride
Posts: 2701
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posted January 11, 2009 05:53 PM
i don't ever pressure wash my bike, and I DAMN SURE don't take it to the car wash. It gets water into places that it won't come out and all of the bolts get corroded. That's something that my grandpa still hasn't learned or doesn't care about lol. Every time that We pull his stratoliner apart, all of the bolts are nasty.
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MasterBlaster
Expert Class
Posts: 297
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posted January 11, 2009 06:02 PM
These are an on condition item, and it is usless to change them as preventative maintenance. We eat tires fast enough that if we check them every tire change we should catch any roughness well before failure is imminent. A new bearing may fail quicker than your known good one, also there is always the chance of damage when R&Ring the bearings. Of course a tech will tell you to change them often, its job security for them. I agree never use a pressure wash around the hubs.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted January 11, 2009 09:57 PM
Correct, check with every tire change and avoid pressure washing them....
PS, Most bikes have double lip seals, the zx14 has single.
My gsxr wheels now have zx14 low friction seals!
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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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jdzx14
Expert Class
Posts: 412
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posted January 12, 2009 01:41 PM
Thanks for all the replies fella's, but one more ?, how about getting the old ones out, what's the process?
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2007 Black ZX-14
Lowering links, Brocks Strap Kit, Muzzy Full 4-2-1, No files, PC3, BMC Race filter, 6 inch extensions,16/44, Shinko 003 Ultra Soft..... SOLD!!!!!
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flite leader
Zone Head
Posts: 651
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posted January 12, 2009 02:53 PM
 Edited By: flite leader on 12 Jan 2009 22:54
make sure you get good bearings to go back in
[like everything else.....quik & cheap........good & expensive ]
many street machines seldom see the speeds that bikes produce
[speed = friction]
the grease in bearings get hot QUICK ...... then cool back down
they get marginal quicker
put a quality bearing back in there or there will be premature wear
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ratbyk
Expert Class
Posts: 179
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posted January 12, 2009 07:14 PM
quote:
Thanks for all the replies fella's, but one more ?, how about getting the old ones out, what's the process?
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I haven't done one for awhile but the last time I did;
Levered the intermediate pipe between the bearings down a bit then came through from the opposite side with a piece of wooden dowel and tapped the bearing out. Then turned the wheel over and came in again from the opposites side. Once the outer portion of the bearing is out of the way you come back in again from the opposite side with a punch with a good shoulder on it and tap out the race. While tapping out the race, work around it gradually so that it doesn't get cocked in there.
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dubious
Needs a life
Needs more time to ride!
Posts: 8442
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posted January 12, 2009 07:50 PM
also when you instal the new ones, push them appliing force on th outer race to prevent bearing damage, and squarely in the hole of course.
They make bearing extractors, its a metal drift with a slot in the end, when you drive the supplied chisel into the slot it expands grabbing bearing, and then drive it out.
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natural selection.....
destiny will overcome intervention.
Some are not worthy of the effort.
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