Here are all Exploded Views/Drawings  you will need.
                         Also a Parts Quick Reference

              You will find following brands here:

  Atwood, Suburban, Thetford, Magic Chef  Hydro-Flame.

     Kwikee steps,  A&E Awnings, Faulkner Awnings,

              Electric heatingsystem for Truma.

                                     Go to left and click.

    Click on "Toilets - water heater" and you will find more drawings

OBS; For Atwood, Suburban, Moreflo, Norcold and Electrolux/Dometic

             you can use your scroll-button for se more epxploded view,