GE dishwasher model GLD5960N00SS does not clean dishes

[AWSHandy]

I looked at this one and the circulating pump works, the drain pump works, the drain hose is not backing up dirty water.  The sump is deteriorating though. It is falling apart and chunks were inside the sump. I am afraid this is clogging the circulation of water. How to clear out debris in water circulation?

[Vance R]

Carefully remove the filter (part 506 and 508 in exploded view) from the sump to clean. If those are clean probably have to remove the pump to clean the impeller.