YJ Brakes kicking my butt - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 05-13-2001, 01:48 PM
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YJ Brakes kicking my butt

Replaced the calipers on my 92YJ and can't seem to get the brakes bled. Pump them 2 or 3 times and good pedal feel, let off for a couple seconds and pedal to the floor. Any body else have a hard time bleeding their brakes?
Thanks Brian

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post #2 of (permalink) Old 05-13-2001, 08:36 PM
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Re: YJ Brakes kicking my butt

Brian, can you describe the steps you took to bleed the brakes? If you don't have a vacuum pump, it's a two man job.

Here's how I bled my CJ brakes before I bought a wonder tool called a "Mighty Vac" pump and gauge.

Do the breaks in the following order:

1. Passenger side Rear Wheel.
2. Driver side Rear Wheel.
3. Passenger side Front Wheel.
4. Drivers Side Front Wheel.

Steps to be taken on each of the above steps:

1. Open the bleeder screw and attach a clear line from the bleeder screw into a jar. You want to see what's coming out!
2. Top off the Master Cylinder.
3. Have a buddy slowly depress the brake pedal.
4. When the pedal reaches the floor close the bleeder screw.
5. Release the pedal.
6. Reopen the bleeder screw.
7. Reapply pressure to the brake pedal.
8. Continue steps 1-7 untill you see a constant flow of fluid with no air coming out of the bleeder screw.

When the Passenger Side Rear wheel line has been bled, do each of the other lines in turn. When no air is trapped in the lines you're done and the brakes should NOT be spongy, but firm when the pedal is depressed.

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post #3 of (permalink) Old 05-13-2001, 08:40 PM
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Re: YJ Brakes kicking my butt

If you are alone you can usually just open the bleeders and the weight of the oil will push the air out...it takes a while, but there is usually something that needs to be done (or drank) while you wait.

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post #4 of (permalink) Old 05-13-2001, 08:44 PM
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Re: YJ Brakes kicking my butt

Brian,
My nephew had this same problem 2 weeks ago. After looking at his calipers I noticed the bleeder screw was lower than the brake line inlet. Make sure you have ther calipers on the correct side. There is a right and a left caliper.Your bleeder screw should be above your inlet. Just one possibility.

Edder

post #5 of (permalink) Old 05-14-2001, 07:04 AM
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Re: YJ Brakes kicking my butt

I have also had this problem, with the bleeder not being at the top of the caliper. Just take the caliper off and gravity bleed it like normal, I've never had it fail.

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'88.5 Zuki, 5" Calmini, Locked, Swamped, Rolled, and just generally broken in right!
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post #6 of (permalink) Old 05-14-2001, 07:43 PM
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Re: YJ Brakes kicking my butt

Make sure you have the right caliper. I just went through this with my CJ5. Blew a rubber hose and after replacing it, I could not get the brakes bled. After a lot of hours, and several wasted $$, I finally figure out that someone had previously installed a left caliper on the right side. Not quite sure why it started doing this after I replaced the hose, but I put on the correct caliper and now I can actually stop with no pumping on the pedal. I've never had a Jeep that would stop before. I didn't even know you could use the words Jeep and brakes in the same sentence !

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