I got the caps (and other parts) yesterday.
I opted to take apart the pump, so that I can solder these caps as close as possible, as per Since87's advice.
It'll be a bit difficult to put it back together, but it's not as bad as I thought.
Those brushes are indeed replaceable. There's a # stamped on them, if it means anything: 46.
I can solder the 0.1 and 0.01 uF caps, and the diode, so that they fit inside the pump housing. The bigger cap (1 uF) though, is going to have to sit outside the housing. I'm going to try to drill a couple of small holes on the back cover, and see if I can connect it that way. I'll have to add a bit of wiring, to extend that cap's leads.
Putting it back together, the only complicated part is slipping on the brushes over the rotor contacts, but I think it can easily be done, by first seperating the back cover from the assembly that holds the brushes, then partly put it back together, so that I can put the brush springs back in... Piece of cake
