That's pretty much it - it's a light press fit.
There is a tool to help, but it's not really worth buying unless you do a couple of these things a month, or you're heavily into doing your own work. It's a collar that clamps around the tube above the bead, and it's got an extension rod that you use to drive the tube into the pump housing.
I've also had good luck with putting the tube in the freezer (overnight, on "deep freeze") putting the pump itself in the oven for about 20 minutes at 250*, and then putting the two together with the help of work gloves, pliers, and never-seez. I'm probably going to end up buying one of those tools tho - I seem to do this just often enough that my wife is getting tired of me taking over the oven every now and again...
5-90