Go to Harbour Freight tools, or ask Autozone if they have a Brake Caliper tool, AND DO NOT BUY THE CUBE OR BLOCK- it is a pain in theButt, and will take you a year to compress the piston.Buy this: http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=40732
It will get the job done fast and easy!!!!
http://www.YouTube.com/watch?v=qrjQofxd-h8
I have been using the cube tool with a 3 inch extension on an impact and it has worked very well for many years. It is fast and easy for me.
with a c clamp. put a block of wood or your old pad over the piston and tighten with clamp.
You need a special tool to compress the piston back into the caliper. IF you have this simply unbolt the caliper, slide it off the brake disc, the pads slide out and the replacements slide in the same as the old ones came out, they'll only go in one way. However in order to refit you need the tool to compress the piston back into its start position. The piston 'screws' back into the caliper under pressure, the tool is essentially a threaded bar with a peg on end that locates in the groove/holes in the piston and a T on the other which goes against the caliper, you then wind the bar round and the pressure and screwing action winds the piston back in. The N/S piston has a reverse thread so needs to be wound the opposite way. With all the bits ready to go it can be done in an hour even without having done it before.
With a caliper rewind tool. It is a key that fits into the notches or grooves on the caliper piston. Mine is about an inch cube with different configurations for model/car/year and works with a 3/8" drive ratchet. Can't recall for certain, but I believe you press and turn counter-clockwise.
How do you compress the rear break caliper, pistons on a 2002 Sierra ?
you have to turn the piston like a bolt
09581-11000 to compress the piston
Yes.
you use a c clamp that's how i do it on all the the vehicle's that i work on if this help's you
Use a screwdriver between caliper and front of piston to squeeze piston back, remove caliper via two bolts on rear inside of caliper. Slide caliper away from rotor and support to ensure you don't damage the hyd. hose. Remove pads from caliper, fit new ones same way. re-fit caliper.
Do not try to compress you will damage the caliper! You need to get a caliper tool and twist them in. look for caliper tool at Harbor Freight http://www.harborfreight.com/cpi/ctaf/displayitem.taf?Itemnumber=40732 Caution both sides turn in opposite directions. Passenger side turns clockwise. Driver side turns counter clockwise.
You need a special brake piston tool to do this. Here is a link that shows what this tool looks like: http://www.lislecorp.com/tool_detail.cfm?detail=416 Basically, you put this on the end of a 3/8 inch drive, then use the side of the tool where the pins match your brake piston. Engage the pins from the tools into the piston slots, press in and turn clockwise. It will take a lot of turns to move it back in the bore.
You have to use a special tool to turn the piston in clockwise. The tool has two pins which match the two recess holes on the piston. Since the caliper is also the emergency brake you cannot just c clamp the piston back into the caliper bore. you should be able to rent the tool at your local autozone or autoparts store.