Replacing windshield wiper motor

[IDAHO 71]

The cowl panel has been removed, along with the plastic screening beneath that.
The only way to see what the wiper motor connects to is a very slanted view. There is no large opening like on later trucks.
A nut can be seen that attaches the motor to the transmission for the wipers. Is that the only nut that has to come off to replace the motor, or are there more connections to the wiper arm transmission/

Also, any tips on lubricating the wiper arm transmissions would be appreciated.