Re: Routine maintenance for suspension?
When there is any play on the steering wheel, you could check out the steering rod ends, the upper and lower ball joints (the upper are greaseable and should get some grease now and then).
Check the track bar bushings for play, the stabilizer links for worn bushings. Also have a look at the upper and lower control arm bushings for wear.
Also don't forget to lubricate the brake caliper sliding pins before you put them back on, to prevent dragging brakes.