Does anyone know how to lubricate the front heater blower motor in an 84 Vanagon?  Mine burned up several years ago, and I purchased a used blower motor.  It is rather hard to turn and evidently needs lubrication.  I can get to the rear bearing, but the front one is beneath the plastic cover that makes up the blades of the fan.  Also, what type of lubrication should I use?

George