347 To prevent overheating and scoring of the shaft after repacking the stuffing box, which of the following procedures should be carried out?

A. Tighten the packing in small increments while the pump is operating.
B. Lubricate the lantern ring with cylinder oil before installing new turns of packing.
C. Tightening the gland in all the way and then backing it off slightly.
D. Operating the pump slowly and applying oil freely to the shaft until the packing is properly seated.