dishwasher pump bearing by xyzyx

Last crawled date: 3 years, 1 month ago

Dishwasher Hotpoint-Ariston broken and showed error F15. This mostly means that washing pump died and need to be repleaced. The main issue is the graphite sleeve bearings in the pump that has a backlash so the pump works incorrectly. The main problem is that those bearings are not possible to be changed, but I found a solution for that.
I've printed bearings where one of them is a full part (at the end of the shaft - this one can be easly repleaced) and second one near the turbine that is devided into two halfs. You need to get rid of the graphite bearing first (break it into peaces crush it or something) and the repleace it with two printed halfs. Be careful do not broke the smal gasket which is on the shaft because you won't be able to change it.
It is important that bearing is lose so the motor can run smothly otherwise you'll get the F15 error again.
The best material for it would be PEEK I belive but I used PA11 (nylon) instead and it works fine.
Modification was made in LTF11H132 dishwasher but these mod can work in other mashines also - a lot of them has simmilar motor parts.
Update:
Nylon my not survive in those conditions (chemical detergents, hot water, etc), so have to find another material for these purpose. The choise is PP (Poli-Propylene), this should solve all the problems.
Added few models with different diameter step 0.1 - you have to check diameter of shaft in the motor and also print settings in order to pick the right one that will fit.