BTW, if you are worried about rusting something, don't. You can use just about any non-acidic liquid to clean it up that you need to, like laundry detergent in hot water, to clean an engine, as long as you don't let it sit with water long enough to dry out (and rust), and oil it. This is the once place that it's fine to use WD-40, take any wet parts, spray them liberally with WD-40, that will displace any water (Water Displacement formula #40), wipe it off before you reinstall the part and oil it with real oil (like Marvel or other brand Air Tool Oil, Mobil 1 0w40, whatever), should be fine.
Obviously you are going to have to take it apart, not normally recommended but you gotta do what you gotta do.
Brett