Mower deck replace spindle brearings

i have a jd 111 and am replacing the spindle bearings in the 38 in deck. every thing is going smoothly except the center snap ring and the missing half moon key. there is a zerk fitting on the side do oi remove the seal on one side before i install the bearings or do they come that way? any help would be most appriciated, thanks.:smile:

Mower deck replace spindle brearings