S13 rear brake problems

[SX APPEAL]

Hello all. I have a 91 Nissan 240sx. I recently brought it in to my auto tech class to change the brake pads and have the rotors trued. Now were putting everything back togather but have run into a problem. Somehow we have to compress the pistons in the rear calipers, and the way I understand it, theres a special tool that hooks on to the piston and rotates it to do this. But the pistons wont rotate. My teacher thinks it may have something to do with the emergency brake. Do I need to disconnect the e brake line from the caliper in order to compress the piston or is there some other method. I hope I explained this clearly enough...

thanks in advance

[navysnail]

your teacher is correct, it does have to do with the emergency brake, what you need to do is either get the tool (its like a cube that you can put on a ratchet, like $10 at NAPA) OR, use a needle nose pliers and turn it and push it. you do not need to disconect anything

gota love auto tech class, i think i learn more in that class then any other class

[SX APPEAL]

We have the tool, i'll let him know. Thanks. Actually I think the probelm was that it was really hard to turn them and we thought maybe we were doing something wrong. Thanks for clearing that up.

[navysnail]

it helps to push in while doing it, and sometimes it takes quite a bit of turning.

dont use anything like an impact wrench, it could damnage the caliper if it pushes in too far.

[DAEDALUS]

I've only had to do it on one car, and fortunately I had picked up the "cube" a while back just in case. With the amount of torque required on the car, I am certain we would not have been able to do it with a needle-nose or any other substitute. They can be really sticky!