sergoss,
этот код работает у вас?
<!DOCTYPE html>
<html>
<head>
<title>Untitled</title>
<meta charset="utf-8">
<script src="http://code.jquery.com/jquery-1.9.1.js">
</script>
<script>
$(document).ready(function(){
$('td:contains("SPB5_AssyRevision")').each (function(){
var s = $(this).text();
var d = s.replace(/SPB5_AssyRevision/gim, "Сб.");
$(this).html( d );
});
});
</script>
<style type="text/css">
td {font-family: Arial; font-size: 80% ; }
</style>
</head>
<body>
<table>
<tr>
<td align="center">20</td>
<td align="center">001320</td>
<td align="center">пол</td>
<td align="center">1</td>
<td align="center">SPB5_AssyRevision</td>
<td align="center">00</td>
<td align="center">Закупаемое</td>
<td align="center"></td>
<td align="center"></td>
</tr>
<tr>
<td align="center">30</td>
<td align="center">000926</td>
<td align="center">rfv</td>
<td align="center">25</td>
<td align="center">SPB5_DetRevision</td>
<td align="center">00</td>
<td align="center"></td>
<td align="center"></td>
<td align="center"></td>
</tr>
</table>
</body>
</html>