dat521gatherer Posted April 30, 2017 Report Share Posted April 30, 2017 I got these out of a junk yard off a 521 years back knowing I'd eventually need them and I don't remember if they go between the race and seal or between the race and hub. They are the 521 inner nla 32kb02 nsk brand. I've seen them with the rings installed and without. I'm currently changing one and was not going to use the black ring as the one that came out doesn't have one but was just wondering about them. So where does it go and why? 2 Quote Link to comment
wayno Posted April 30, 2017 Report Share Posted April 30, 2017 I suspect that it is a spacer to allow the use of a bearing that will not normally work on a 521, I would ask Mike Klotz, he knows everything about this, I suspect he has the answer to this. 1 Quote Link to comment
dat521gatherer Posted April 30, 2017 Author Report Share Posted April 30, 2017 I see now on carpartsmanual.com it's a grease seal spacer. I wonder why some don't have them. Maybe I should use it? #5 1 Quote Link to comment
dat521gatherer Posted April 30, 2017 Author Report Share Posted April 30, 2017 How much grease do you put into the hub? Fill it all the way up? 1 Quote Link to comment
mklotz70 Posted April 30, 2017 Report Share Posted April 30, 2017 yep....basically just a spacer so that the seal wasn't installed too far in. Once the aftermarket started making the seals, the dimensions changed. You'll find some seals that are pretty wide.....they butt up against the bearing race and are still flush to the end of the hub......the spacer is basically built in. Others are the width of the stock seals and could/should use the spacer. Just set the seal flush with the end of the hub and it will be just fine. The spacer also kept them from being put in crooked. The manual doesn't address them specifically. ....and the factory manual shows how much grease to put in the hub. You don't want to overfill it. Too full and the grease cap can be pushed off when things get hot. Figure FA9 in the manual. 2 Quote Link to comment
dat521gatherer Posted April 30, 2017 Author Report Share Posted April 30, 2017 Got it thanks Mike. 2 Quote Link to comment
Stoffregen Motorsports Posted May 1, 2017 Report Share Posted May 1, 2017 We used to drill a hole in the dust cap on the 510 race cars, to vent out the expanding air, otherwise the dust cap would not make it through the race. 2 Quote Link to comment
banzai510(hainz) Posted May 1, 2017 Report Share Posted May 1, 2017 I just grab the whole bearing hub assemebly if a bearing goes bad. as I don't have spare bearing sets 1 Quote Link to comment
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