I used the C Clamp type tool that I borrowed from AUTOZONE on my 190E when I bought the lower ball joints there. The joint pressed out slightly then would not budgeat all . The joint was pressed in at a slight angle. I then used a thin pipe wrench as a shim to " square up" the ball joint press and it pressed right out. ( The wrench was thicker on one side) The other side went very easily when the tool was square while pressing the joint out.

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1990 190E 2.6
1996 Grand Voyager 3.3
1985 Mustang GT 5.0 5 SPD
1982 Suzuki GS 750T