There is something missing here.
If you have a Homokinetic Axle in order to use the stock style Boots you need to press the Axles Apart. And, may have to cut the Cans.

I am not sure on the Annular Axles (on the Differential end of the Axle it has bolts going through it).

In order to use the ATF Funnel trick to Install the Boots you need to use Flexx Boots or there is a similar Dorman made Boot.

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84 300D, 82 Volvo 244Gl Diesel