Service Bulletin Description:
There has been a vendor change for the bubble pump on the models listed above. To accommodate the new pump, the tub front, the drain pump, the cover pump, the air pump hose, the air tub hose, and the Main PCB have been changed.
This Service Bulletin PDF download contains information for the following:
WF520ABP/XAA WF520ABW/XAA WF511ABW/XAA WF511ABR/XAA
The PDF may also contain information that applies to additional models not listed.