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05-11-2012, 10:14 AM
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H stamped on 28-2 cylinder
This may have been addressed before...but I can't find it. Is it normal to have an "H" stamped on the rear face of a M28-2 cylinder? Could this be a replacement part? Thanks.
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05-11-2012, 10:18 AM
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Yes, it is
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05-11-2012, 10:32 AM
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yes it is normal or yes it is a replacement part???
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05-11-2012, 10:34 AM
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The H was stamped on the back of the HP cylinders to identify them as such and so they wouldn't get the high polish of the 27 cylinders. Yours would be original. Hope that clears it up.
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05-11-2012, 10:51 AM
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Thank you Dick for the excellent info. Now I can stop worrying about it.
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05-11-2012, 10:51 AM
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What diamonback68 said. Get a flashlight and look on the back of the extractor star for a serial number. As I understand it, the "H" ( Highway Patrolman) was used to communicate the finish to the polishing department, similar to the way nickel cylinders were stamped "N".
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05-11-2012, 06:16 PM
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Later HP's do not have this... Not sure where the breakpoint was.
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05-11-2012, 07:55 PM
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Mine comes from somewhere around 69-72 and has an L stamped there.
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05-11-2012, 08:00 PM
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Quote:
Originally Posted by cooperduper
Mine comes from somewhere around 69-72 and has an L stamped there.
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The cylinders I've seen with an "L" on the back were from around 1960 +/-. It indicates a Left hand tread on the ejector rod.
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05-11-2012, 08:07 PM
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Interesting. Mine is a 28-2, #N974XX, so comes from 69-72 according to the list in the "Ultimate" thread. Maybe something odd?
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05-11-2012, 08:26 PM
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Quote:
Originally Posted by cooperduper
Interesting. Mine is a 28-2, #N974XX, so comes from 69-72 according to the list in the "Ultimate" thread. Maybe something odd?
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Have you looked on the back of the extractor star for a serial number?
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05-11-2012, 08:49 PM
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Yes. Has serial number.
Last edited by cooperduper; 05-11-2012 at 08:56 PM.
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