Service Bulletin Description:
There are two different versions of the WF328 washing machines. Versions produced after May 2009 (8th and 9th digit of the serial number S5 or higher) have the drain pump mounted in the front. Earlier versions have the pump mounted in the rear.
This Service Bulletin PDF download contains information for the following:
WF328AAG/XAA WF328AAR/XAA WF328AAW/XAA
The PDF may also contain information that applies to additional models not listed.