Whenever you use these cleaning machines, big or small ........ always
flush your parts through crevices or galleries with a forced fluid flow, as these vibratory cleaners do a great job of
loosening particles from the parts surface ....... but do nothing to remove those 'now loose' particles
out of the area or crevices.
In other words, I had an oil cooler and oil tank 'ultrasonically' cleaned by a shop and they came back all wrapped in plastic and looked great ........... though just for precaution I decided to flush them out
before I used them ......... very happy I did, as a lot of particles came out of everywhere, with the post 'forced fluid' flush.