| Re: [GMCnet] NAPA SKF-21771 rear bearing seal fails the 0.25" test [message #331188 is a reply to message #331151] |
Sat, 21 April 2018 12:27   |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma:
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Senior Member |
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Richard,
Review this drawing:
http://www.gmcmhphotos.com/photos/skf-21771-rear-seal-fails-test/p63893-rear-axle-seal.html
Note the position of the seal on the spindle. The problem arises when the seal comes in contact with the inner race of the bearing.
I guess you could set the seal to 0.055 to 0.070 proud and then coat it with grease and put the hub on until the inner bearing seats
on the spindle, then pull it straight off.
Look at the spindle and see where the grease is on the spindle.
I don't know if this will work or not but it's the only way I could come up with to see where the seal rode.
Regards,
Rob M.
The Pedantic Mechanic
Sydney, Australia
AUS '75 Avion - The Blue Streak TZE365V100428
USA '75 Avion - Double Trouble TZE365V100426
USA '77 Kingsley - TZE 267V100808
-----Original Message-----
From: Gmclist [mailto:gmclist-bounces@list.gmcnet.org] On Behalf Of Richard
Sent: Friday, April 20, 2018 2:49 PM
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] NAPA SKF-21771 rear bearing seal fails the 0.25" test
Rob,
I haven't found an SKF seal that passes the 1/4" test, and I'm beginning to feel that it's a fool's errand trying to find one.
Would I be off-base assuming that one could measure the clearance of the rubber seal and simply add the difference that it's short
to the spec for how proud the seal sits? That is, if instead of .250" clearance under the rubber there's only .220" could I add the
.030" difference to the spec'd .025" to .045" proud seal set? ie, set the seal .055" to .075" proud?
Is this simply a measure the seal and modify the depth of set situation? That would make my life simpler and piss off far fewer
auto parts people!
Thanks.
Richard
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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