Check the diagram for the part you described as missing a chunk, it might be possible to get it as a replacement part for not much money. I would caution against trying to use any type of "super glue" since it doesn't have the durability to withstand the repeated shock and vibration that this part will experience. If the broken part is item #22 (shell/rear bearing) then the cost for the part is $170.00 - check the diagram to verify what your broken part looks like at the following link:
(copy and paste the entire string, as the hyperlink doesn't always load on the fixya site)
TUB,MOTOR&documentId=R0111530&backToLink=Return to Sub Components list
IF I was going to attempt to repair (glue) the part, I'd use something like JB Weld for plastics as it would likley provide better results and I'd try to keep the inside as free as possible of any excess so as not to snap clothes, etc. Good luck to you and hope I've helped.