| Brown stain on inside of outer rear bearing [message #362255] |
Sun, 07 February 2021 07:39  |
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RF_Burns
Messages: 2277
Registered: June 2008
Location: S. Ontario, Canada
Karma:
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Senior Member |
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I pulled the passenger side mid rear hub yesterday to install my Lenzi mid-rear disk brake system. Upon examining the bearings I noted a brown stain on the inside of the outer bearing where it rests on the spindle. Its on about 1/4 of the inside circumference.
See photo here:
http://www.gmcmhphotos.com/photos/lenzi-mid-axle-disk-brake-upgrade/p67915-installing-dave-lenzi-mid-axle-disk-brake-upgrade.html
I don't see any scoring or evidence of heat. The rear bearings where replaced about 2 years ago with new Timken bearings, but with cancer and Covid they have less than 3,000 miles on them.
The grease I used was a Valvoline product for wheel bearings with descriptions "Extreme pressure and temperature with moly and lithium for vehicles with disk brakes" so I'm thinking it should be up for the job. The grease has not separated.
I have not yet cleaned out the entire bearing, but I cannot see any pitting etc.
Any opinions on this brown stain.
Bruce Hislop
ON Canada
77PB, 455 Dick P. rebuilt, DynamicEFI EBL EFI & ESC.
1 ton front end
http://www.gmcmhphotos.com/photos/showphoto.php?photo=29001
My Staff says I never listen to them, or something like that
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