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Re: [GMCnet] NAPA SKF-21771 rear bearing seal fails the 0.25" test [message #318218 is a reply to message #318217] Tue, 30 May 2017 08:37 Go to previous messageGo to previous message
Ken Henderson is currently offline  Ken Henderson   United States
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma:
Senior Member
John,

IIRC, you're thinking of the front wheel bearing seal. From the drawing I
posted, it appears virtually impossible for the metal to touch the
bearing. But the rubber is separated from it only by about the distance
the seal should be left proud of the hub.

https://drive.google.com/file/d/0B3XquSIYjDleenNDM1BHQlNHa1E/
view?usp=sharing

Ken H.


On Tue, May 30, 2017 at 9:19 AM, John R. Lebetski
wrote:

> I think I kept the box from the SFK seal from last year and will see if
> same number. IIRC the fail made is that the wrong one has the metal touching
> ​ ​
> the bearing resulting in metal particles in the rollers. If it were just
> the rubber wearing and not sealing that would almost be better.
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
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