Two bushings, inner and outer, replace both. I'll have to look in the manual to see what the procedure for removing the spring is, you MAY be able to just lower it, but don't unless you know definitively. If they are really beaten up, the bottom of the tire may be half and inch or more further out than it should be, you will get quite a bit of wear.

You should be able to check by jacking the wheel clear of the ground and pushing/pulling on the bottom of the tire -- bad bushing will allow it to move.

The bushings are cheap.

Check the tie rod for looseness on the bushing (eccentric bolt) end and the ball joint. If the ball joint is bad, you need to replace the link, otherwise you can replace the inner end bushing.

Peter

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1972 220D ?? miles
1988 300E 200,012
1987 300D Turbo killed 9/25/07, 275,000 miles
1985 Volvo 740 GLE Turobodiesel 218,000
1972 280 SE 4.5 165, 000 - It runs!