Date: 12 Apr 2006 14:40:36 -0700 From: "SmaartAasSaabr" <smaartaassaabrnospaml.com> Subject: Re: '89 900 (non-turbo) Rear Caliper Piston Question
markcnospam.com wrote: > I found out that what needs to be done sometimes is you need to use a > C-clamp to help push the piston back especially when it gets to be > almost fully retracted. Also, some brands of brake pads are too thick > so they must be sanded down (with an electric sander) until they fit. > It can be very frustrating trying to rebuild old calipers so anyone who > wants to do it better have patience and an alternate vehicle to get the > extra parts that you'll most likely need otherwise get new or > professionally rebuilt calipers. oh my god NO NO NO NO NO!!!!!! There is an adjuster for the rear parking brake. As the pads wear, the piston will be adjusted more outward to keep the parking brake working properly. When replacing the rear pads, take off the 14mm plug on the rear of the caliper. Inside there is a 4mm allen screw. Loosen the screw and you will see the piston retract into the caliper, or it will go with a light push (assuming it isn't seized). RTFM!