I fixed mine about a month ago,, The coil will pull out by hand. The magnets and the brushes are holding it in now, but it will pull straight out.
You need to take it out to check the condition of the brushes and to clean out the metalic particles stuck to the magnets when the outer bearing trashed its self.

When you turn it , you will feel a subtle "bumpity" as the brushes bear against the comutator.

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Second owner 1979 300SD 250K miles.
1995 Ford Lightning
66 Mustang
87 5.0 Mustang
08 Ford Edge
46 Willys Jeep
89 Transalp
97 Dodge Ram 2500 Cummins..

I have the case apart and have split the face that holds the outer bearing. I haven't tugged or pulled on the coil, something is holding it in place. I didn't want to break anything.

Sounds like you are saying I needn't be shy and just pull the coil from the main frame?

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84 300DT Puke Yellow. Totalled after 438,000
84 300DT Orient Red. 169,000 (actual mileage may vary)
2002 Explorer EB (wife's)