Retracting Caliper Pistons, How to? Options

[Vince-Noir]

My new rear discs are on and the calipers are off waiting for me to retract the pistons before i replace the pads, but i have no idea how to retract the pistons on my 98 GT (3SGE). In fact they look fully extended!

Can anyone tell me how to do this please?

Many thanks

[Vince-Noir]

Ok thanks for all your help guys, appreciate it! Well it looks as if the seals *may* have gone, however i did end up using a C Clamp and an old pad to compress the piston back in, using the bleed valve to relieve any pressure. Unfortunately the guide i was using was telling me to leave the cap off the reservoir, in fact it omits actually replacing it at all throughout the entire process Thats pretty infuriating. However, it has been about 20 months since brake fluid was replaced (its still not in the slightest bit discoloured thankfully), but as you said, altracman78, the res cap was off long enough to allow our very humid english air to diffuse with the fluid - not good.

The whole set up has been reassembled now and thankfully there has been no more leaking, even after the 5mile run i gave the car. But unfortunately; the braking is fairly spongey - and i don't think it's because they are new pads/discs - more likely is that there is air/water in the system compressing a far sight easier than if it were all brake fluid.

Just for my peace of mind i'm thinking of taking to a garage to check it all out, after all the last thing anyone wants is dodgy brakes.

Thanks for the knowledge guys, always a pleasure to listen and learn