Bar Keepers Friend. This stuff works fantastic. Squirt it on and wipe it around with a sponge let it sit but don`t let it dry. Rinse.
https://www.amazon.com/Bar-Keepers-Friend-Cleaner-Premixed/dp/B000V706OC/?tag=atomicindus08-20
I have installed this in a building with great results.It has outside air reset, outside air, supply and return sensors, recirculating pump enable, house pump enable and dhw pump capabilties among other things...
I use a square drive ratcheting service valve refrigeration wrench.
https://www.amazon.com/hilmor-1839043-Service-Wrench-Square/dp/B00O94UTUE/?tag=atomicindus08-20
The key with 2 prongs is to turn lights on and off typically found in school restrooms, gyms and hallways.
Vertical switches with a slot.
The others are toilet paper and paper towel dispenser keys.
I`m wondering if you could drill and tap through the gear on opposite sides of hub and then thread bolts in and tighten the bolts to the other side of housing to push the gear off.Some pulleys have threaded holes for this .Still may need to heat the hub to get it off.
Anybody else have issues posting up pictures now.
It`s not me because I can post on other sites with no problem unless something changed here that I`m not aware of.
Was trying to post a wiring diagram in the electrical section to help someone and it wont let me post it.