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Old 11-19-2013, 07:37 PM
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Restrorob Restrorob is offline
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If this wasn't a OEM Gravely hydro filter, Take it back off and look inside the smaller holes for a anti-drainback valve (a rubber disc just inside of the holes).

Just because a filter is the same size and same threads doesn't mean it will work, A engine oil filter With drainback valve will not work in a hydro oil system...... The hydro system must have a free flowing filter without a drainback valve......
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