Blue88Comanche Posted February 12, 2014 Share Posted February 12, 2014 Well I got the jeep back tonight. So it's raining, dark, and the windshield wipers aren't working 100% and as I come up to my first red light the petal goes to the floor and the rear locks up. Thank God for manual transmissions! I was bearly able to stop. And I was safely ably to get in the gas station parking lot. A tow truck has been dispatched and will take 90 min. So while I am waiting.... A front elocker was installed, the front brakes had to me removed from the axle to remove the shafts. I was not leaking fluid, and the brake fluid was full. The brakes where working the other day. Just not after the work that has been done. Any thoughts? Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 12, 2014 Share Posted February 12, 2014 Nobody touches my brakes but me. I'd be looking to kick someone's @$$. Link to comment Share on other sites More sharing options...
Eagle Posted February 12, 2014 Share Posted February 12, 2014 Is the front reservoir of the master cylinder full now? Most likely either a hard line or a hose ruptured. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted February 12, 2014 Author Share Posted February 12, 2014 Nobody touches my brakes but me. I'd be looking to kick someone's @$$. normally i agree but to replace the front carrier requires the brakes to be removed Is the front reservoir of the master cylinder full now? Most likely either a hard line or a hose ruptured. the reservoir is full and the bypass line does in fact work Link to comment Share on other sites More sharing options...
Jeep Driver Posted February 12, 2014 Share Posted February 12, 2014 Well......could just be that your master has failed, coincidence? I suppose. Link to comment Share on other sites More sharing options...
cruiser54 Posted February 12, 2014 Share Posted February 12, 2014 Master cylinder or a leaking hose/tubing/fitting. Time for some noggin pokin'. Link to comment Share on other sites More sharing options...
Rockfrog Posted February 12, 2014 Share Posted February 12, 2014 The caliper can be removed without disconnecting the brakelines. Did you only try once? After brake work the piston is bottomed and sometimes takes a few pumps of the pedal to get full braking back. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted February 12, 2014 Author Share Posted February 12, 2014 I pumped it several times before I even got on the road, they delivered to our business near their shop but I could not get it till well after they where closed. after I got off the main road and parked I checked for leaks, fluid level, and vacuum connection to the booster. tried the breaks a several times, but it would go to the floor. all I know is the brakes worked perfectly before they messed with it. They did leave it at one of the few parking spaces with a curb to park up against.... Link to comment Share on other sites More sharing options...
ParadiseMJ Posted February 12, 2014 Share Posted February 12, 2014 Check to see if the calipers were re-installed on the correct side(s). If the bleeder is at the bottom of the caliper, they're on backwards. If they're on backwards they could have thought they bled out all the air...but all the air can't be bled out with the bleeder on the bottom of the caliper. So they could have done a perfunctory job on the bleeding, called it good, and returned it to you. I would be taking it back to the shop and telling them they screwed it up. Then insist they fix it without charging you anything unless they can PROVE it was a coincidental failure. Link to comment Share on other sites More sharing options...
Blue88Comanche Posted February 13, 2014 Author Share Posted February 13, 2014 they took it to another shop and think it may be the master cylinder. it is set up to some sort of pressure tester bypassing the master cylinder checking for leaks. if it is the master, cylinder then its not anything they did and i will have it towed home and replace it my self. Link to comment Share on other sites More sharing options...
Eagle Posted February 13, 2014 Share Posted February 13, 2014 If there is a leak anywhere in the front brake circuit, then every time you push the peddle you'll be pushing fluid out of the system, and the master cylinder will be empty. You said the master is full, so that means there is no leak. That leaves the following possibilities: 1. Bad master cylinder 2. Bad slave cylinder 3. Air in the lines Link to comment Share on other sites More sharing options...
Blue88Comanche Posted February 13, 2014 Author Share Posted February 13, 2014 If there is a leak anywhere in the front brake circuit, then every time you push the peddle you'll be pushing fluid out of the system, and the master cylinder will be empty. You said the master is full, so that means there is no leak. That leaves the following possibilities: 1. Bad master cylinder 2. Bad slave cylinder 3. Air in the lines Slave cylinder? the calipers and drum pistons? I know the basic way to bleed the brakes but can't remember how to bleed the bypass. do i do a normal bleed first then, then leave open one of the front bleeders and bleed the back, after the bypass line is bled, do another normal bleed? If the master is bad i plan to use the 97+ or WJ master again (I don't recall what i used the first time), is there a difference or a performance difference between the two? Link to comment Share on other sites More sharing options...
carnuck Posted February 13, 2014 Share Posted February 13, 2014 I had issues with the feedback line on mine allowing air in every time I did a panic stop till I capped it off. Link to comment Share on other sites More sharing options...
Eagle Posted February 13, 2014 Share Posted February 13, 2014 Slave cylinder? the calipers and drum pistons? :facepalm: Read "brakes" thought "clutch" Cancel slave cylinder. In fact, cancel #2 entirely. It's virtually impossible for a caliper to fail such that it doesn't function yet doesn't leak. Link to comment Share on other sites More sharing options...
Eagle Posted February 13, 2014 Share Posted February 13, 2014 I had issues with the feedback line on mine allowing air in every time I did a panic stop till I capped it off. But that would not result in the front brakes failing. Link to comment Share on other sites More sharing options...
ftpiercecracker1 Posted February 14, 2014 Share Posted February 14, 2014 A brake caliper can certainly fail without leaking. They simply seize up, but most of the time they seize while under a braking load. I.E. They fail to retract after releasing the brake peddle. Had this happen 3 times on my truck. Cheap Chink Calipers = You get what you pay for :thwak: . Link to comment Share on other sites More sharing options...
Blue88Comanche Posted February 14, 2014 Author Share Posted February 14, 2014 so apparently the brake pads where put on backwards? the inner pad where the outter pad goes and what not... I don't see how that would cause the loss of pressure. when i go to pick it up you can bet i am pulling off the wheels and inspect the brakes before i head home.... if my jacks are in the toolbox and not at home.... and this time i am driving during the day, without rain, while it is warm outside.... tomorrow i am going to the JY and will be picking up another Master Cylinder. Link to comment Share on other sites More sharing options...
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