Dishwasher stops mid cycle but continue after cooling down

[ruslan]

My Dishwasher stops in the middle cycle. This happens after about an hour of work and it stops when the machine starts spraying water. Actually it doesn’t start this cycle. So what happens is the dishwasher starts working doing different cycles, like filling with water, washing, emptying, etc. It works for about one hour doing washing and after that it fills with water again and when it tries to spray there is a noise, sort of hump noise. I unscrewed the panels and it looks like the circulation motor which pumps the water inside to spray the plates is moving really slowly. I removed the motor and oiled the axes which moves the spraying water arms and it start working ok. But after about one-two weeks the same problem started again.
If I stop the dishwasher and leave it for some time (20 mins) to cool down then the washing cycle continue.
My dishwasher is KENWOOD TABLETOP KDWTTB10. It is a table top machine.
Is there anything I can do to fix this?