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RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections.

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Old 07-04-2008, 01:17 PM   #1
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Possible spindle/hub/wheel bearing damage

So here I am again, doing my part to populate the tech section.

I decided to take apart my hub while redoing the whole front, might as well, right? Anyways, I found some discouraging things. There appears to be burning on the spindle, rusty grease, and some wear on the hub (if you can see it in the last picture).

Is this stuff alright to reuse?
Attached Images
File Type: jpg rust.jpg (117.5 KB, 8 views)
File Type: jpg spindle1.jpg (189.2 KB, 7 views)
File Type: jpg spindle2.jpg (176.2 KB, 4 views)
File Type: jpg spindle3.jpg (156.3 KB, 6 views)
File Type: jpg hub1.jpg (138.1 KB, 9 views)
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Old 07-04-2008, 01:17 PM   #2
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Also, there's some wear on the washer/nut.
Attached Images
File Type: jpg washer.jpg (185.0 KB, 3 views)
File Type: jpg hub2.jpg (133.2 KB, 4 views)
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Old 07-04-2008, 03:02 PM   #3
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I'd scuff the spindle up with some emery cloth or ~240grit sandpaper and take the bluing off. Never seen one heated up like that Should be alright htough.

Hub looks cool, but i'd definetley change the races.
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Old 07-04-2008, 03:12 PM   #4
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Quote:
Originally Posted by classicauto View Post
I'd scuff the spindle up with some emery cloth or ~240grit sandpaper and take the bluing off. Never seen one heated up like that Should be alright htough.

Hub looks cool, but i'd definetley change the races.
Races? Ugh... that doesn't look like a fun job. I've already got new bearings on order.
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Old 07-04-2008, 05:14 PM   #5
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It's hard to tell if it's damage or dried grease or something else???
Clean everything up and retake the pics...
I've never seen brown grease before.
The bearing looks like it was sitting in rusty water!


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Old 07-04-2008, 05:57 PM   #6
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The only other thing you could do is "mic" the races and spindle and see if the measurments are in spec. That is if you are really anal and have access to a micrometer or other measuring device. So get rid of the brown grease and corrosion and see how they look.
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Old 07-04-2008, 06:13 PM   #7
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Quote:
Originally Posted by RETed View Post
It's hard to tell if it's damage or dried grease or something else???
Clean everything up and retake the pics...
I've never seen brown grease before.
The bearing looks like it was sitting in rusty water!


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I cleaned everything with Simple Green, with the exception of down in the hub. I'll try scrubbing it harder and I'll also take something slightly abrasive to it and see what's up. It didn't seem to be dried grease though.

Only the grease around the top bearing (pictured) was like that. The grease down in the hub was black.
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Old 07-05-2008, 11:36 AM   #8
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The grease in my hub that fragged a bearing looked like that, except your hub and spindle look actually very good. Mine were destroyed when the grease failed and the bearing ate itself.

Looks like you prevented a potential failure. Score!
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Old 07-05-2008, 02:15 PM   #9
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I went to NAPA and the races are like $3 each so I'm pretty pleased about that.
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Old 07-05-2008, 09:11 PM   #10
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The new bearings should come with new races.
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Old 07-06-2008, 11:20 AM   #11
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They did. New bearings/races were like ~$55. I'll have to get 2 seals which are about $9 each. Overall, not bad.
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