| Re: NAPA SKF-21771 rear bearing seal fails the 0.25" test [message #318161 is a reply to message #318156] |
Mon, 29 May 2017 17:35   |
ree_eric
Messages: 43
Registered: February 2004
Location: Alexandria, Ontario, Cana...
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Just checked the 4 old stock Chicago Rawhide 21771 seals I purchased on an online auto parts store and they failed the 1/4 test by about .014. Hard to measure, had to use the plunger end of the caliper and try to keep it vertical, got about .236. Although I saw in the photos someone had used the inside measuring side of the caliper but the large jaw interferes with the other side of the seal tipping the jaws slightly making the measure appear to be .25 but the flat surface test with on exact 1/4 screwdriver bit fails. I assume the 1/4 requirement is exact and .236 will not do?
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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