00' 4900, Replacing the wiper motor

Hi guys,

By chance anyone know when replacing the wiper motor on a 2000 4900 truck - can the clips for the blades be removed through the center screened over opening (by reaching in), or does the entire top plate have to be taken off?

Replaced just about everything on the 4900 series truck at one time or another (we have 3 in our fleet) but never the wiper motor.

 

Yes, detaching the wiper arms from the motor. Looks like they are using c clips to hold the arms to the motor shaft. Just not sure how to get to the clips to pop off the arms. Unless after removing the bolts/backing plate I can reach in there to remove and then reattach the wiper arms.

 

Anyone?