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Offline bezerk1

Z6 Z8 Rear Wheel Bearing Replacement
« on: June 07, 2016, 09:12:56 AM »
I need to replace a sloppy rear wheel bearing.  I did some digging into part numbers and here is what I found:

CFMoto  30499-03081
Koyo     DAC3063W
NSK      30BWD01AG

It seems to be a pretty common bearing used on a lot of Toyota's.
« Last Edit: June 13, 2016, 08:44:24 AM by bezerk1 »

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Offline Bobbed06

Re: Z6 Z8 Rear Wheel Bearing Part Numbers
« Reply #1 on: June 07, 2016, 10:45:24 AM »
If you could get an actual Toyota quality bearing it would probably last forever !!!

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Offline bezerk1

Re: Z6 Z8 Rear Wheel Bearing Part Numbers
« Reply #2 on: June 08, 2016, 08:12:31 AM »
I bet they would.  I ordered the Koyo bearing.  I'll post some pics of installing it.  The loose wheel bearing wore out my brake pads.

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Offline bezerk1

Re: Z6 Z8 Rear Wheel Bearing Part Numbers
« Reply #3 on: June 13, 2016, 08:33:03 AM »
Here are some pictures of the tear down.  When I removed the knuckle the axle was seized to the hub.  I had to use my 10 pound persuader to get the hub off.  The inner race of the bearing is still on the axle shaft as you can see in the first picture.  I'm going to use my slide hammer to try and pull that race off.  If it doesn't budge my cut off wheel will turn that one piece race into a 2 piece race.

The second picture shows the snap ring that needs to be removed to get the bearing out.  This bearing is sealed on the outboard side.

The third picture is of the inboard side of the knuckle.  Note that there is no seal on the inboard side.  The Koyo bearing that I ordered Koyo     DAC3063W1 does not have a seal on either side.  For that reason  I'm probably not going to use it.  I'm not sure what keeps dirt from entering this bearing on the inboard side.

The final picture is of my destroyed brake pads.  The loose bearing caused the disk to not run true in the caliper.  This wore the pads quickly and unevenly.  This was to be expected with any sloppy wheel bearing.  I'll update with more pics and info when I get more time to pull the bearing out of the knuckle.
« Last Edit: June 13, 2016, 08:43:50 AM by bezerk1 »

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Online NMKawierider

Re: Z6 Z8 Rear Wheel Bearing Replacement
« Reply #4 on: June 13, 2016, 09:27:51 AM »
No seal on the inboard side? Really? WTF!
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | Magellan TRX7 GPS| Bandit Springs

My Videos On YouTube

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Offline Bobbed06

Re: Z6 Z8 Rear Wheel Bearing Replacement
« Reply #5 on: June 13, 2016, 11:35:52 AM »
I am sure if you take that new Koyo bearing to a bearing supply house, they can find ya one that is in fact double sealed. Unsealed bearings and off road just dont mix......



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Offline bezerk1

Re: Z6 Z8 Rear Wheel Bearing Replacement
« Reply #6 on: June 15, 2016, 08:49:28 AM »
Just an update.  I was unable to purchase an alternate bearing anywhere so, I broke down and purchased one from my dealer.  He had it in stock and will ship it to my shop because he is about an hour and a half away.  My dealer has been nothing but spectacular so I don't have a problem with that.  I would have preferred a better brand of bearing but, time is of the essence.  I enjoy the hunt for a better part that I know is out there.  I did state that the inboard side of the bearing did not have a seal.  That might not be true.  After closer inspection I did find remnants of what may have been a seal a few hundred miles ago.  My guess is that the inboard seal failed and allowed mud and dirt into the bearing causing its failure.

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Online NMKawierider

Re: Z6 Z8 Rear Wheel Bearing Replacement
« Reply #7 on: June 15, 2016, 09:01:52 AM »
I kinda thought I could see the remains of the seal retainer in that pic. Good. Any idea why it failed? Is the other side still OK?
2015 Z Force 800 (53") EPS -
Custom Air Intakes | Custom Exhaust Mod | SuperATV Harness | Custom Fenders | Custom Skid/Rock Sliders | 27" GBC Grim Reapers | Seizmik Mirrors |Конструктор (Rodin's) Doors | Dr Pulley Sliders | 1.5" Wheel Spacers | BENZ Silencer (as needed) | SATV Flip Windshield W\ Rear Shield | Dual Light Bars | Diamond Plate Storage | Magellan TRX7 GPS| Bandit Springs

My Videos On YouTube

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Offline bezerk1

Re: Z6 Z8 Rear Wheel Bearing Replacement
« Reply #8 on: June 22, 2016, 08:43:34 PM »
Update.

I have the hub back together successfully.  I placed the bearing in my freezer overnight.  Next, I triple checked the housing for burrs and nicks.  There were a few that were left from the removal of the old bearing.  My die grinder took take of it quickly.  I wanted to make sure that the bearing would drop right in.  I liberally coated the knuckle with anti-seize and applied heat evenly until I could not touch it.  Since I had a few friends watching I figured the bearing would not go in straight and seize halfway causing a major disaster.  Instead it dropped right in.  A few whacks with a drift and hammer proved that the bearing was shouldered. 

I started to re assemble the brakes and found that one of my caliper pins was frozen.  I cleaned the rust off it and called it a night.  Sorry that I don't have pics.  Things were going to smooth to stop.