Jason, I'm going to wp my Pro4 tonight, what do I need to coat and what should I not coat?
take off both red ends.
remove 3 button head screws holding sensor onto can.
pull out sensor.
tape the bearing and tape/plug the hole on the back of the sensor that the end of the rotor fits into.
tape off the sensor port, and if you have dielectric grease put some inside the sensor port prior to make sure no conformal seeps into it.
the 3 tapped holes for the red end cap i plug with little peices of a q-tip.
i tape off the areas that mount to the can as well so the conformal doesnt end up making the sensor sit a little lopsided. but i didnt do that on timmy and it hasnt been an issue.
then just spray coats over the front and rear circuit boards.
on the non bearing side of the sensor there is a slot in the mounting ring on the backside of the sensor port. you will see some solder points back there, i make sure to spray in there as well.
couple light coats. then i spray coats on so thick they drip off...
repeat until you think youre good. i prolly do mine overkill but i always do at least 5 good coats until i can tell there is a good layer of conformal.
edit - i also rtv the sensor port cap back on.
edit edit - i also pull the rotor out through the sensor side and spray corrosion-x in the motor windings. i spray alot and let it sit overnight on its end on some paper towels to drain off the excess.