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Original Message
RE: weird date codes on FE block
By Royce P - 08/29/2005 7:25:02 AM; IP 207.69.137.36
1M18 is either
1961 / December / 18 or
1971 / December / 18
If the block has two motor mount holes it is a 1961 unit.

If the block has four motor mount holes it is a 1971 unit.

The other mark (E1) is indicating which foundry line cast the block. The date codes were there to help in case a defect surfaced during machineing operations created a need to find other blocks with similar defects.
This thread, so far...
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Collapse <a href=../ForumFE/reply.aspx?ID=25667&Reply=25667><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor25667" onclick="return false;">weird date codes on FE block</a>&nbsp;-- <font color=#0000ff>John, <i>08/29/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=25667', contentMargin: 60, icon: $('anchor25667') }); </script>  weird date codes on FE block -- John, 08/29/2005
Collapse <b>RE: weird date codes on FE block</b>&nbsp;-- <font color=#0000ff>Royce P, <i>08/29/2005</i></font>RE: weird date codes on FE block -- Royce P, 08/29/2005
Collapse <a href=../ForumFE/reply.aspx?ID=25674&Reply=25667><img src=../images/reply.png width=30 height=10></a>&nbsp;<a href="#" id="anchor25674" onclick="return false;">RE: weird date codes on FE block</a>&nbsp;-- <font color=#0000ff>John, <i>08/29/2005</i></font><script type="text/javascript"> new HelpBalloon({ dataURL: 'replyb.aspx?ID=25674', contentMargin: 60, icon: $('anchor25674') }); </script>  RE: weird date codes on FE block -- John, 08/29/2005
 The two dots under the 1 indicate 1971 -- Hawkrod, 08/30/2005
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