My ball joint press fit perfect over the ring on the bottom of the A-arm to press out the ball joint. But pressing it in, there is no flat surface. Is anything special needed? How is this done? I have a 40 ton hydraulic press at my disposal but I don't want to mess anyting up.

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Steve
1985 Mercedes 500SL Euro (Gray market)
1995 BMW 520i Euro (Gray market)
1992 BMW 525it Wagon
1994 Honda Del Sol Si