1999 Clubcar DS motor instal

[Papas 73Dart]

I pulled ot a 48 volt motor from this cart because it was building up bad vibration and made noise when going above 4 mph.It also would slow down like the batteries were dieing then if you hit a bump it would pick up again.
What I found inside was lots of carbon dust and a nose bearing that felt dry with a bit of play.l have replaced the bearing and checked the rotor assembly all is good and the brushes are like new.
My question is what type of lubricant should l use on the output splines ,and the was no bumper inside the output shaft does it require on to help eliminate vibrations
I went on the Clubcar web site and couldn't locate this particular information