[wepaddle4]

The wiper on the passenger side quit working, I have the unit removed but I don't see an obvious way to open it up and find out what's wrong.  The wiper arm wouldn't come off, I'll try using a puller if it needs to be removed.
Does anyone have a source for a manual, schematic, or any helpful advice for repairing it?
1983 classic, I didn't see any name on the wiper unit.

Thanks

Scott