1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Rear Brake Question.

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Old Oct 20, 2002 | 09:27 PM
  #1  
Forseti's Avatar
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From: Toronto
Rear Brake Question.

Hey All,

Today I replaced my rear brake pads. Everything seemed to go fine..was able to get the piston over the pads ok and everything seemed just as peachy as when I did my front pads.

When I went for a test drive..something was wrong. Even in neutral..car wouldn't roll back off my driveway. And when I drove..any time I shifted the car felt like it was going to halt.

I found that after I disconnected the e-brake cable on both sides...it drives ok, but when I have it up on stands...the rear tires do spin but with a little drag.

I admit I did not have the chance to bleed the system. (getting dark early now)..could this be the problem, or do I need some hard braking to wear the pads and adjust the calipers.

Also the e-brake cable at the tire...how do you properly tighten and adjust these 2 nuts.. Are they supposed to be tight against the clasp, or loose?

Thanks,

F-
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Old Oct 20, 2002 | 10:01 PM
  #2  
duboisr's Avatar
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From: Nashville Tn
ON the rear ,did you turn or spin the piston back into the caliber not press it back? if you turned it in as is correct untill it is flush ,did you line up the resess notchs to line up with the pins on the pads . If not the pads are not in correctly and the clearance for the disk is not there.
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Old Oct 20, 2002 | 11:40 PM
  #3  
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From: Toronto
I did not spin the piston when I removed it or when I placed it back on. The pads do look like they are sitting correctly.

Should I go rent a brake piston tool?

Thx,

F-
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Old Oct 21, 2002 | 05:58 AM
  #4  
Rx7carl's Avatar
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From: Orlando, Fl
Uhhhh yea, get the tool, turn them in till flush with the caliper. Also those nuts are supposed to be tight. And BLEED Dem brakes!
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Old Oct 21, 2002 | 08:30 AM
  #5  
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From: Toronto
Alright,

I'm going to redo them tonight with the proper piston tool and going to bleed the brakes.

I have a feeling that one of my problems is that my driver side rear rotor is slightly warped, and the old pads compensated just from wearing unevenly, but I think you guys may be right and the pad isn't sitting properly.

Thx, we'll see what happens.

F-
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Old Oct 22, 2002 | 08:45 AM
  #6  
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From: Toronto
Hey guys,

Alright. Looks like my problem was solved. Seems that I didn't push the pistons far in enough and on one of the sides the notch wasn't completely lining up with the groove.

I rented the piston tool, but I found that using pliers to twist the piston clockwise actually pushed the piston back. So I'm wondering if this tool is even necessary for the rears (for the front's I think it would help).

Thanks for the advice,

F-
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Old Oct 22, 2002 | 08:54 AM
  #7  
MIKE-P-28's Avatar
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From: Fort Branch, Indiana
I always used a C clamp for the front, and pliers for the back
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Old Oct 22, 2002 | 09:57 AM
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From: Toronto
the tool is necessary when the calipers are stiffning up. Don't ask how I know... But when the caliper is working properly, then you don't really need the tool.
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