After you take the driveshaft off, there is (or was) a phillps head screw that will be under where the driveshaft was bolted on, then it slides off the 4 studs. BTW have you tried adjusting the parking brake? It is not an automatic adjusting mechanism, there is an adjustment bolt on the front side of the backing plate. (if you don't have the RAVE manual I'd suggest downloading that, it covers this procedure)