Ya a puller would be nice but..
Once the plastic cap is off & nut removed, spray liberally in there with Penetrating fluid.
Then leave it for 15 minutes.
Did not have a puller handy & was determined to get those suckers off!
Mine had never been off before and seemed like they were welded in place:favorites68:
With wiper bent up, It needed some persuasion from bottom with a small wedge block & flat blade screwdriver, along/around the rim, while I pried it upwards with some might!
After the first one flung into the neighbors yard, :gr_grin: I decided it might be best to hold & pull up on the second one while prying it around/upwards!
For re-assembly use some anti seize on the splines before placing em back on!
If you have the Mopar windshield there is also alignment vertical lines in the glass for exact blade placement.
If you are removing the arms it would also be a good idea to now remove the bottom plastic cowling, to access the air intake screen for cleaning!
You may be surprised what you find growing in there!
There are aprox 4 plastic buttons/pins that pull upwards, & with the hood open you can the lift upwards, remove the washer fluid connectors from the underside, then bend it, for removal..easy!
I can now have the cowling off in 5 minutes! :icon_wink: