ClassicCar

There is a large thin jam nut (I cant recall the size, maybe 11/16 to 3/4") deep inside that plastic escutcheon. You need a deep socket to fit over the shaft and remove that nut and washer under it first before trying to pull the escutcheon off. Once the nut is out remove the escutcheon, then you can lift the antennae and its pivot shaft housing with rubber grommet off the roof of the car. Keep all the parts together! Kenneth

ALSO, don't forget to disconnect the antenna lead wire that runs in the thin aluminum tube behind the rear view mirror down to the dash.

There is an 11/16th nut inside the bezel You need a deep well THIN wall socket. Trying to use a regular socket will crack the bezel. It should slip right off then.
Be careful with the wiring to the antenna as it runs under the headliner across the top of the windshield. You don't want to remove the headliner just to retrieve the wire.
Bob Hickson

I don't know much about these. ...But, a while back my dad had a new old stock antenna still in the box but assembled. Never on a car. He went to take it apart to install it, it wouldn't come apart. This is on the work bench mind you. And it would not come apart. Turns out, over time, that plastic thing shrinks down over the threads locking itself on. Now this has been years ago, I can't remember why, but it wouldn't unscrew either for some reason. He broke that plastic piece taking it off. He had a spare of the plastic pieces and it would not fit on the new shaft either. Over the years while it was on the shelf it too had shrunk. He had to drill it out a little to make it fit.

At least that how I remember it. But it's been a long time.

A while back there was another thread that brought up this very topic. Maybe some one could link it here? Or you could search to find it and see if any new info is in there?

Marker345 wrote:

I'd like to remove the antenna from my car for painting, but I can't seem to get the plastic bezel that's under the knob off. I don't want to pry on it much because the old plastic is so brittle. I there a trick to getting it off?

Mark R.
Oregon

Hopefully the attached information will provide you the assistance needed.

Cheers

How to remove a Hudson Stepdown Roof Top antenna

The Hudson Stepdown antenna is mounted through the roof. It is located directly above the divider bar between the two windshield halves. Most of the antenna elements are either exterior to the car or not seen as they are behind the rotating knob and escutcheon cover.

See the example picture.


[attachment=12535]antenna1.jpg[/attachment]


The knob and escutcheon plate can be removed as follows:
1.Loosen the set screw in the knob and carefully pull it off the antenna control shaft.
2.When the knob is removed the nut holding the escutcheon to the assembly can be seen, remove it with a deep well socket.
3.Once the escutcheon is removed you will be able to access the additional nuts and locating assemblies and remove them.


[attachment=12536]antenna2.jpg[/attachment]


4.NOTE: be careful to disconnect the connector from the antenna feed. (See the yellow wire in the picture.
5.Once the nut, washers and plastic locating washer located behind the escutcheon have been removed and the antenna disconnected… the antenna will be removable from the exterior of the car.

Ok, so the set screw was in the knob.
The nut was down the hole there.
The second nut that they were refering to is after the bezel. Is the bezel keyed or something? Even if it were shrunk down on the threads it should still spin off of the shaft. Right?

Possibly if you heated it with a hair dryer it may epand enough to let loose so you can slide it off,
Roger

mmmmm i think that might work . . . .
Roger

Thats what I was trying to indicate in my first post. I've found that lock washer squash's the plastic around the shaft. I never tried a dremel just wiggled it till it worked loose.
Glad to hear you savet it !
Roger