Squeeking from front end......

[Andy FZS]

On my way home the other night my bike developed a loud squeek from the front, as I'd stripped and cleaned my brakes at the weekend ready for the MOT I thought it could be linked. No ! I removed both calipers, it still squeeked, on removing the front wheel a small piece of speedo drive fell out . On inspection the drive had no drive one lug was on the floor the other nowhere to be seen  and the pick up was packed full of grease, is this correct? For now I've glued the single lug back on and washed out all the grease and the squeek has gone. My question (finally) is when I fit the new drive should it be packed with grease or not?

Andy (Squeek free)

MOT Passed by the way.