In order to replace the heater element on my Miele G6510 dishwasher, I removed the whole sump assembly by removing the large worm-band and removing the filter and unscrewing the washer-jet mount. (I now know that this is not necessary - you can remove the circulation motor by just prising it out!).
When I try to reattach the sump I can not fit it over the large seal. The service manual simply says "Use rinse-agent" to lubricate it. I've tried washing up liquid without success.
I've tried all sort of ways to force it but I can't seem to apply enough pressure.
P.S. The heater element is included in the replacement part "Pump Facia"