Any detailed schematics for ISC motor assembly?

[airspeed]

I took my ISC motor assembly apart for cleaning and have one spring, short heavy ~3/8" OD, not sure where it goes? It looks like it belongs in the hex pocket where the actual throttle punger goes, not sure. One gear is threaded on the plunger assembly with a small return spring, This must be an open loop motor that drives the punger out past the end of the threads to set the fast idle. Does the 3/8" pring stall the motor in a defined position or does it push the plunger back when motor power is off? How much grease/ lubrication if any required for re-assembly?