Normally for tie rods and ball joints I use a 'fork' which is beat in with a hammer inorder to seperate it. For pitman arms I just use a simple 2 or 3 leg gear puller. Before you buy any tools there check this site out:
www.harborfreight.com

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Jeff M.
Mercedes W123 DIY pages are now located here.
1983 / 1984 300D Sold
2000 CLK430 Cabriolet ~58k Sold
2005 Avalanche 4x4 ~66k