Kenmore Dishwasher 665.13123K703 not cleaning

[c_reality]

Hi all,

My dishwasher fills and drains (and clicks) but does not clean.  I tried to take it apart to see if the chopper (or some area down there) was clogged, but beyond getting the lower spray arm and filters assembly out, it looks like everything else is sealed and not availble for troubleshooting in the field.  Is this true?  And does that mean I need to buy a whole new pump and motor assembly if I want to fix this dishwasher?

Thanks!