need help with rear disk brake pad installation

gideup

Member

Dec 28, 2002

114

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17

fort myers, fl

Nov 28, 2004

#1

• Nov 28, 2004

• #1

I got myself a set of slotted rotors and decided to change out the disk pads. All went well up front but on the rear I cannot get the brake piston to compress enough to re-install the caliper assembly. I used a large C clamp and ended up twisting the steel handle into a crooked mess. Put the assembly back on the spindle and tried a pry bar. Even added my 25" breaker bar for additional leverage. It won't move. Any ideas are greatly appreciated as my car is now forever stuck on the floor jack. (I also have the master cylinder lid off so that the fluid can back up into the resevoir. I even tried opening the bleader valve at the caliper to no avail thinking that the pressure would release easier.

BTW this is a 97 GT

 

tomustang

Psychotic Member

Founding Member

Jun 8, 2000

3,434

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78

McLean Hospital

Nov 28, 2004

#2

• Nov 28, 2004

• #2

you need to get a piston compressor, you have to twist the piston back in. autozone has the kit you can borrow

 

T

TripleBlk

Member

Nov 12, 2002

312

3

19

Cape Canaveral FL

Nov 28, 2004

#3

• Nov 28, 2004

• #3

You need the special tool (autozone will rent it to you for free). There is a steel disk that inserts into the slots of the disk brake piston. (IIRC) You just turn the disk clockwise while pushing in slightly and the pston will recede.

 

Juiced87Notch

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Sep 30, 2004

500

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Gresham, Oregon

Nov 28, 2004

#4

• Nov 28, 2004

• #4

a set of large channel locks will work in a pinch... if that or any other tools dont work, you may have a seized caliper, if so you need to replace or rebuild both rear calipers, I'd just replace em both anyways it isnt that much and its good insurance IMO.

 

gideup

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Dec 28, 2002

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fort myers, fl

Nov 28, 2004

#5

• Nov 28, 2004

• #5

thanks for the help, autozone in the morning

 

NYStang2002

Member

Apr 10, 2003

231

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Wappingers Falls, New York

Nov 28, 2004

#6

• Nov 28, 2004

• #6

I hope you didn’t ruin your pistons. I'm cringing just reading about the unnecessary force you put on your pistons. All you had to do is buy the piston compressing tool at Sears and turn clockwise while compressing. Also remember to leave the piston notches on the six o'clock position when your finished.

 

NYStang2002

Member

Apr 10, 2003

231

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16

Wappingers Falls, New York

Nov 28, 2004

#7

• Nov 28, 2004

• #7

gideup said:

thanks for the help, autozone in the morning

Click to expand...

NO!!!! don't go to Autozone for the tool! The one they sell does not have the proper fitting for the Mustang piston. Go to Sears and get theirs. They have one extra fitting that the autozone tool doesn't. I wasted 9 bucks at Autozone and wound up going to Sears.

 

gideup

Member

Dec 28, 2002

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fort myers, fl

Nov 28, 2004

#8

• Nov 28, 2004

• #8

You think that you are cringing. You have no idea how much force i put on them, my stomach is rolling just thinking about the potential damage I might have done.

 

gideup

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Dec 28, 2002

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fort myers, fl

Nov 28, 2004

#9

• Nov 28, 2004

• #9

Sears works for me.

 

tomustang

Psychotic Member

Founding Member

Jun 8, 2000

3,434

2

78

McLean Hospital

Nov 28, 2004

#10

• Nov 28, 2004

• #10

autozone is free, and they do have the PART you need. hell i used it and it is in their stock

 

gideup

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Dec 28, 2002

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fort myers, fl

Nov 28, 2004

#11

• Nov 28, 2004

• #11

oops, no can find tool on sears website

 

N

n0v8or

10 Year Member

Aug 23, 2003

604

8

39

Rhode Island

Nov 29, 2004

#12

• Nov 29, 2004

• #12

Is this it?
http://www.sears.com/sr/javasr/prod...00946344000&subcat=Automotive+Specialty+Tools

 

MT1083

New Member

Sep 16, 2003

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Charlotte, NC

Nov 29, 2004

#13

• Nov 29, 2004

• #13

this is the one that I have:
http://www.napaonline.com/cgi-bin/n...t?prrfnbr=15612779&prmenbr=5806&usrcommgrpid=

 

merc123

Active Member

Jan 27, 2003

420

2

39

North GA

Nov 29, 2004

#14

• Nov 29, 2004

• #14

Needle nose pliars worked on my Cougar. If the piston looks the same and has the slots where you can put the pliars in, go for it.