tmpafford Posted May 10, 2004 Report Share Posted May 10, 2004 I started a break pad replacement job on my 97 STS. The front took about five minutes a piece. The rear has me scratching my head. Why wont the piston move? Is there something I am missing? This is the first time I have messed with rear disk brakes. All the others have been rear drum. Can anyone give me some help? What do I need to do to push the piston back? Thanks Mac Link to comment Share on other sites More sharing options...
EJPut Posted May 10, 2004 Report Share Posted May 10, 2004 Like my 93, I think you have to screw them back. Any big auto parts store will have a brake cube that will help you with this. Link to comment Share on other sites More sharing options...
tmpafford Posted May 10, 2004 Author Report Share Posted May 10, 2004 Like the top of an old bottle jack? Are the treads conventional? Clockwise to screw it in and counter clockwise to screw it back out? I feel like such a dope. Why didnt the auto parts guy ask if I had that stupid little part? Can I use channel lock pliers, or just buy the tool? How much is the tool? Link to comment Share on other sites More sharing options...
MAC Posted May 10, 2004 Report Share Posted May 10, 2004 The rear pistons on your car should be conventional. Depending on where you buy the cube, it should cost about $10-15. Channel lock or so-called gripper pliers may damage the pistons and still may not work adequately to allow new brakes to be inserted. MAC Link to comment Share on other sites More sharing options...
JimD Posted May 10, 2004 Report Share Posted May 10, 2004 The tool "should be" a standard brake part. But I have used a 3/4" or maybe a 5/8" combination wrench. Use the open end to grip the piston and slip a screwdriver through the box end for a little torque. Screw in clockwise. Jim Drive your car. Use your cell phone. CHOOSE ONE ! Link to comment Share on other sites More sharing options...
gc_caddy Posted May 10, 2004 Report Share Posted May 10, 2004 You can also use a pair of long needle nose pliers to engage the notches. Link to comment Share on other sites More sharing options...
Julio Posted May 10, 2004 Report Share Posted May 10, 2004 The slack adjuster is a screw out type, if you use pliers or anything like that to screw it back in be carefull not to tear the dust boot. Link to comment Share on other sites More sharing options...
DaveC Posted May 10, 2004 Report Share Posted May 10, 2004 When you finish screwing the piston in before reinstalling the calaper be sure and align the piston adjustment grooves for equal pressure on the pads. Picture is shown in the service manual. DaveC Link to comment Share on other sites More sharing options...
Ranger Posted May 10, 2004 Report Share Posted May 10, 2004 When you finish screwing the piston in before reinstalling the calaper be sure and align the piston adjustment grooves for equal pressure on the pads. Picture is shown in the service manual. DaveC If you don't have a manual, I believe the detents on the piston need to be a 3 & 9 o'clock positions. Link to comment Share on other sites More sharing options...
jgr7 Posted May 11, 2004 Report Share Posted May 11, 2004 Autozone will loan you the caliper piston compressor, on the rear brakes it has a pin that slips into it and stops the end from slipping like you need on the fronts, this screws the piston back in. I too couldnt figure it out the first time I did a rear disc car, only took a couple seconds once I had the right tool. LOL Jeff Link to comment Share on other sites More sharing options...
growe3 Posted May 12, 2004 Report Share Posted May 12, 2004 See attached image for piston position. Drive'em like you own 'em. - ....................04 DTS............................ Link to comment Share on other sites More sharing options...
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