I just did my front brakes in the last couple of weeks. The pistons were definately NOT treaded on mine. I used a piston compressor (about $10-15 at auto shop, but a C or F clamp would achieve same thing), and one of the old brake pads so I could compress both pistons at the same time. Visit http://www.rangerovers.net/maintenance/brakejob4.html. It was very straight forward. Both brakes done in 30mins
Graham, February 2009