904 Lost Acting Up

From what I understand....the pump was being pushed into something else by the shaft on the converter....it would help if I knew more about transmissions...
By the shaft on the converter do you/they mean the hub on the converter? With the pump being bolted to the case of the transmission, it's hard to figure what they mean by "the pump being pushed into something else". Sounds like a shop to avoid with that kind of mumble speak.
JMHO.