Bosch Dishwasher Circulating pump leaking

CGI_3

Circulating pump leaking is leaking somewhere on the shaft seal. Took apart. How does it seal?! There's about a half mm of free air between the seal and the shaft. Doesn't look like it ever really sealed here. There's a flat surface on the rear of the impeller and the on the 'seal' itself making me thing this is where the seal occurs. Is this right? (These are very hard surfaces, so just wondering how they would work as a seal.)

Anyway, for now I put an oring on the shaft in the 'gap', and it's not leaking for now.

Repair kits seem awful pricey for what you get!

The Red Ace

if bosch didn't fit an o ring then it isn't needed, what you have there is a fixed carbon faced seal in the impellar and a floating seal in the pump body that when tightened together make the seal, if you had checked the pump body you should have seen the water stain if leaking from the seals. they nearly always leak from where the pump body is pressed into the sump of the d/w, remedy a couple of rounds of ptfe tape

CGI_3

Definitely leaking around the shaft. Picture from when I had it out. Won't know if its leaking again for a while. It's integrated. so have to wait for the water to come out under the kick board once the base of the DW starts to overflow!

When I put it back together I 'tightened' the impeller against the flat seal, so no issues there.

If I do have to go at this again, guessing I'm as well have a new impeller and seal to hand.

Do you have a source to get these at a reasonable price?!

The Red Ace

you did well to take it apart and reassemble even if it still leaks, you can get a repair kit from either Exsparetise or Quinns both in Tullamore and on the net, or as I see you are in Limk you should be able to source it in Lr Gerald Griffin St. Have the ENR number which is located on the door top edge when ordering.