u/DIYfailedsuccessfuly

Shop says both rear wheel bearings are just starting to go south, and the source of a driveline noise. They are asking for parts cost plus 5 hrs to replace both bearings, with new hubs. I see that multiple companies also sell a complete knuckle solution for the rears on these explorers. Any pluses or negatives of doing it that way? Is it a big time saver if the vehicle is a very clean 120k unit? What would u like to do if u were the tech, press bearings or swap everything attached to a knuckle over?

Im in maintenance, we have a small Bridgeport mill, started cutting shaft keyways on it, but they dont have a functional coolant flood system set up. I thought the coolant sump was empty, but found it some sort of brown "oil" in it, definitely hasn't been used in years. We dont mill much, the one other guy who does is on another tour, its kinda a shitshow. I wanna get a new flood coolant set up going, showed my supervisor the tiny chips and oily mess i was making for HOURS cutting a few KW's. My bosses are people managers, not technical ppl. So now i have to tell them what i need to get this machine up and running full speed. My last job was manufacturing conveyors, we cut a fair bit of keyways, the coolant was a water based something that was milky white as i recall?? Everything im seeing in catalogs is brown, yellow, ect, or calling it oil, not sure what the heck i need for coolant. We are just use HSS bits and machining steel. Its before last month its been 6 years since i touched a mill, and im definitely not a trained machinist.

EDITED for clarity hopefully.