Basically just stripping down front suspension and rebuilding with new parts John, which include upper steering bearings and gas assisted adjustable dampers. If you have damper blades the steering bearings will render them unnecessary and they can be removed.
SSL recommend using a jack to release pressure on main spring but others prefer to using studding. I used a mixture of both last time. Wolf performance offer a tool which fits in place of dampers to release and retention new main spring which speeds the job no end, although it's not cheap.
More info and picture of tool courtesy of GoMog
here although you can ignore the extra work involved in replacing kingpins and bushes. Having said that it's an excellent opportunity to do this job as well if there is any wear in that area.
Unless replacing stub axle bushes/kingpins therefore you don't need to remove calipers/hubs but do support the stub axle assembly to avoid straining brake hoses whilst kingpin is removed.
