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Old 06-01-2007, 06:04   #1 (permalink)
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Adjusting e-brake on rear calipers

'97 Taurus GL 3.0L Vulcan 140K miles

Replaced all brake hardware in rear last summer: pads, rotors, calipers, cables. Had to recently replace all the rear lines and proportioning valve. I'm darn sure everything is properly bled.

My e-brake barely pulls the caliper on the rear passenger side, and not at all on the drivers rear. I noticed the driver side cable is hardly being pulled.

Do I need to adjust the pistons at the calipers? I recall needing to spin to re-seat them when putting the new pads and rotors on. I also noticed both rear cables don't pull evenly when connected to the main e-brake cable that runs to the cab.

I guess I don't fully understand how the e-brake cable presses the piston to the rotor . Isn't it supposed to be a self-adjusting system?
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Old 06-01-2007, 06:08   #2 (permalink)
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Re: Adjusting e-brake on rear calipers

Unhook the cables from the calipers and work to parking brake. They should move freely. I suspect cables.
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Old 06-01-2007, 06:14   #3 (permalink)
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Re: Adjusting e-brake on rear calipers

Thanks. I will try that.

Can anyone tell me how the cable, connected to the caliper actually pulls the piston to the rotor. Does it self adjust or not?
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Old 06-01-2007, 15:31   #4 (permalink)
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Re: Adjusting e-brake on rear calipers

I know on my 97 Chevy Lumnia the rear disk brakes are adjusted when you press the emergency brake peddle, Hold the emergency brake release out and pump the emergency brake 20 or 30 times and see if that helps.

The cable/caliper works on a ratchet like action. Im curious, how did you compress the caliper piston back in?
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Old 06-01-2007, 16:34   #5 (permalink)
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Re: Adjusting e-brake on rear calipers

Thanks. I'll give that a try.

Quote:
Originally Posted by jwko
Im curious, how did you compress the caliper piston back in?
The first time I replaced the pads I let out a little brake fluid and then bled the brakes.

This last time I had to replace the calipers because the cables were froze to them. The new calipers were already compressed out of the box.

I'm not sure how one really does it without some kind of specialized too. I think Harbour Freight carries a $20 tool to do this. If you search the archives you'll find a link to the tool.
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Old 06-02-2007, 22:45   #6 (permalink)
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Re: Adjusting e-brake on rear calipers

Every time you use the brakes it adjust itself by extending the piston until the proper pressure is applied.

The E brake has nothing to do with it on a caliper system. Other than it will do the same thing that normal brake usage will do.
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Old 06-06-2007, 01:24   #7 (permalink)
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Re: Adjusting e-brake on rear calipers

Quote:
The E brake has nothing to do with it on a caliper system. Other than it will do the same thing that normal brake usage will do
I wasn't sure about the Taurus but on the Chevy Lumina, yeah, the parking brake is how a person would do it.
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Old 06-06-2007, 04:55   #8 (permalink)
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Re: Adjusting e-brake on rear calipers

I'm a little confused but I think you're all saying the rear disc calipers do not self adjust. The only thing the e-brake lever does on the caliper is push the piston onto the disc. Any real adjustment, if you can call it that, is the caliper sliding itself over center of the disc just like on front disc designs.

Do I have this correct, or am I just being thick-headed?
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Old 06-06-2007, 07:41   #9 (permalink)
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Re: Adjusting e-brake on rear calipers

The rear calipers are like the front with respect to being self adjusting. You do not need to use the ebrake to adjust them. This is how you adjust drum rear brakes.
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Old 06-06-2007, 07:46   #10 (permalink)
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Re: Adjusting e-brake on rear calipers

Thanks.
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