2004 Ford Taurus AC not working

The spanner wrench is for holding the clutch plate while loosening or tightening the bolt but most people don’t use one, the bolt holding the clutch plate can be removed with a small impact. The clutch plate is removed with a 8 X 1.25 MM bolt. Save the small washers that are between the clutch plate and compressor shaft, those are used to set the clearance between the plate and pulley. You will need a snap ring pliers to remove the hub pulley and coil.