Rinse dispenser not releasing rinse aid

Dishwasher Repair
1

I have noticed that my rinse aid is not discharge from the rinse dispenser.
I run it every other day but not have refilled the liquid in the last two months.
Do I need to replace the rinse aid dispenser.

3

Here are your parts
http://www.appliancepartspros.com/partsearch/modelsearch.aspx?model=WDT790SAYM1

See the attachment for the tech sheet.

I am assuming that the rinse aid used to work OK.
If yes then it needs replacing.
If no then check the setting in the following manual (page 7).
You may want to try a higher setting even if it used to work OK.
http://www.whirlpool.com/digitalassets/MLPDF/User%20Instructions%20-%20W10596244.pdf

4

Thanks Denman.
Is there a guide to replacing the rinse dispenser for this dishwasher.