Is this bearing bad?? - Yamaha Grizzly ATV Forum
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post #1 of 15 Old 03-01-2012, 10:09 AM Thread Starter
 
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Is this bearing bad??

I'm swapping out rear axles for Rhino's and checked the bearings prior to removing the tires and they didn't show any signs of wear. Now that I have the axles out and I cleaned the bearings, I noticed the left side bearings look much different from the right side. It is as if the left side bearing has some serious heat/burn marks. I'm assuming this means I need to go ahead and just swap out both bearings while I've got it torn down...

What I assume is the bad bearing:

What I assume is the good bearing:

2008 Grizzly 700 EPS
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post #2 of 15 Old 03-01-2012, 10:14 AM
 
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Does the bearings inner races have any slack in them?

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post #3 of 15 Old 03-01-2012, 10:44 AM
 
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X2, turn each of the the inner race (two per bearing) by hand and check for play and roughness.

09 Griz 700(815cc) - Black, 25in Buzzsaws/30in Zillas, Uni filter, 47mm bored throttle body, custom machined primary, 1.5mm shim, 18g greaseless overdrive weights, Fox Podium Shocks, Modified RDC 2in lift, Warn RT25, 2in snorkels

06 Kodiak 450 - Green, stock rhino tires, uni, modded stock exhaust, machined clutch, 1mm shim, 500rpm wet springs and 4-660 weights

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post #4 of 15 Old 03-01-2012, 10:48 AM
 
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usually you get those heat marks when the axle starts spinning in the bearing. When your axle is spinning in the bearing it means the bearing is not spinning freely like it should. I know bearings are pretty cheap if you shop around online. if you replace them now, you should be good for a couple years(depending on riding conditions and frequency). no need to tear your quad back apart in 6months when one fails.

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post #5 of 15 Old 03-01-2012, 11:08 AM
 
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This will be hard to believe, but Kawasaki has bearings for a fraction of the cost of Yamaha, and they will fit. Kawasaki part # 92045-0123. Partshark has them for 8 bucks. A Kawi dealer sells them for about 16 bucks. Or you can purchase the Yamaha bearing for over 60 bucks... rediculous!

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post #6 of 15 Old 03-01-2012, 11:08 AM Thread Starter
 
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Quote:
Originally Posted by TrueBlueRacing View Post
usually you get those heat marks when the axle starts spinning in the bearing. When your axle is spinning in the bearing it means the bearing is not spinning freely like it should. I know bearings are pretty cheap if you shop around online. if you replace them now, you should be good for a couple years(depending on riding conditions and frequency). no need to tear your quad back apart in 6months when one fails.

That makes sense. I'll go ahead and swap them out so I don't have to pull everything apart down the road for skimping on a pro-active $80 fix.

Thanks,
Todd

2008 Grizzly 700 EPS
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post #7 of 15 Old 03-01-2012, 11:10 AM Thread Starter
 
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Quote:
Originally Posted by jathomas437 View Post
This will be hard to believe, but Kawasaki has bearings for a fraction of the cost of Yamaha, and they will fit. Kawasaki part # 92045-0123. Partshark has them for 8 bucks. A Kawi dealer sells them for about 16 bucks. Or you can purchase the Yamaha bearing for over 60 bucks... rediculous!
Thanks Jason. Yamaha quoted me $37 per side. I'll call the Kawasaki shop to see if they have any that you referenced. Do the Kawasaki bearings hold up as well and are they an exact duplicate to the Yamaha(size, etc.)?

Thanks,
Todd

2008 Grizzly 700 EPS
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post #8 of 15 Old 03-01-2012, 11:24 AM Thread Starter
 
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Jason - I called and they have the bearings for $12.64 each. Quite a savings over $37 the Yamaha dealer wants...

Thanks again,
Todd

2008 Grizzly 700 EPS
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post #9 of 15 Old 03-01-2012, 11:37 AM
 
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Exact same bearing and much cheaper.

09 Griz 700(815cc) - Black, 25in Buzzsaws/30in Zillas, Uni filter, 47mm bored throttle body, custom machined primary, 1.5mm shim, 18g greaseless overdrive weights, Fox Podium Shocks, Modified RDC 2in lift, Warn RT25, 2in snorkels

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post #10 of 15 Old 03-01-2012, 11:48 AM
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This is the kawasaki OEM part# 92045-0123 wheel bearings

Kawasaki part # 92045-0123

Just changed all 4 bearings on pop's 700 last night. No probs. I suggest putting them in the freezer for at least an hour before trying to put them in. Makes life a little easier
 
post #11 of 15 Old 03-01-2012, 06:03 PM
 
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Garage
Bearing in the freezer and you can also put the disassembled spindle/knuckle in the oven for a half hour to make the bearing drop right in.

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post #12 of 15 Old 03-01-2012, 06:31 PM
 
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Quote:
Originally Posted by jathomas437 View Post
This will be hard to believe, but Kawasaki has bearings for a fraction of the cost of Yamaha, and they will fit. Kawasaki part # 92045-0123. Partshark has them for 8 bucks. A Kawi dealer sells them for about 16 bucks. Or you can purchase the Yamaha bearing for over 60 bucks... rediculous!
What is the fitment of those bearings? Years, models, etc? I thought there was something about them not fitting an '02, maybe?

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post #13 of 15 Old 03-01-2012, 06:38 PM
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03+ 660s and all 700s front and rear. 02s have two bearings instead of one big one
 
post #14 of 15 Old 03-01-2012, 07:14 PM
 
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$hit.

RED 2002 Grizzly 660, 28" Gorilla Silverbacks, Wiseco 11:1 Piston, HotCams Stage 1 Raptor Cam, Raptor Valve Springs, DizGrizz Serious Air Filter Mod HERE, K&N Air Filter, Custom Rad Relocate, 1mm Shim, 660 Mega-Air Snorkels HERE,Powermadd Handguards, ODI Rogue Grips.
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post #15 of 15 Old 03-01-2012, 11:02 PM
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yezzir.
 
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