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Topic Review (Newest First)
03-23-2012 12:59 AM
mark52
Quote:
Originally Posted by shadews View Post
Yeah this cable is actually missing. Does the cable goto the air compressor or somewhere else? I cant find a loose cable anywhere. The wire coming out of the diff is fine...its just the wire that goes to whereever is missing.

So after you fixed the wire the locker started working? I was told that it was just a sensor and thats it. I am going wheeling this sunday at bridgeport so I will try the lockers out there and see what happens. I have run it in some dirt and mud around my house and I couldnt get it to lock.

I bought it at 75400 miles so I figure the gear oil needs to be replaced anyway. No telling if the PO did it or whatnot.
First you want to check the easiest stuff - the air. do what Jerry says in the above post and see if you have air going all the way to the diff. you should be able to just pull off the hose at the diff and see if its pumping out air. if not, check the compressor. if you have air, then it may have something to do with the wire. of the two pictures you posted, the one on the right shows the wire coming out of the diff. On our jeep, if you are looking at the diff from the front, on the top of it there is a clip that holds the wire connection(plug). after the plug the wires go back into the same protective tubing (conduit ) that the air line is run in. It then goes to the dash i guess? If need pics let me know. i can post them tomorrow.
03-22-2012 11:38 PM
Jerry Bransford Both air compressors for the lockers are mounted on the t-case skidplate, at the rear below where the rear driveshaft connects to the transfer case.

Shift into 4Lo and cycle the locker button until the front locker is supposed to engage and listen for the second air compressor that drives the front locker to kick in. If the second air compressor for the front locker is running, the problem is an air leak. If the compressor never turns on, the problem is electrical.

Also, the Rubicon's lockers operate at a very low air pressure, right at 5 psi.
03-22-2012 10:57 PM
shadews
Quote:
Originally Posted by mark52 View Post
OK, I might be able to help you out a little. My front locker was doing the same thing when we bought our 06 rubi last summer. the rear locker worked great-the indicator light would blink for a few seconds then turn solid(locked). pushing the locker button again would result in the light blinking, never turning solid and thus, not locked. I got under the jeep to find the air hose pulled off of the diff and i saw the wire that you are talking about broke off right at where it goes into the diff. The wire is what tells the indicator light if the locker is locked but apparently it has to be working in order for the locker to work. I did try to just plug the air hose in correctly but it still wouldn't lock.
I cant tell by your picture-can you just plug it in? I'd post a pic of mine but all you really need to do is go look at your rear diff. If it is a problem with that wire as was mine i have some bad news for you. That wire( about 12" long) is a $70 part from jeep. In order to install this part, the axle shafts have to be pulled along with the locker parts in the diff. The place that i bought the jeep from only charged $300 to do this. he said most places would have charged upwards of $600.
That said, if you have this done, have someone that knows what they are doing do it. After having the locker fixed, the axle started leaking gear oil. Fed up with the guy who fixed the locker i took it to a better mechanic to have the gear oil leak fixed. He found that the seals were all beat up from the axle shafts being put back in incorrectly and charged $470 to fix the leak again having to pull the axle shafts to replace the seals. About a week after he fixed it it started to leak again from the same spot. Took it back to have it fixed under warantee this time. This time he found a $2 part that goes on the axle shaft that guides it into the tube and into the seal without messing the seal up. Now my lockers work and my axle no longer leaks gear oil.

Yeah this cable is actually missing. Does the cable goto the air compressor or somewhere else? I cant find a loose cable anywhere. The wire coming out of the diff is fine...its just the wire that goes to whereever is missing.

So after you fixed the wire the locker started working? I was told that it was just a sensor and thats it. I am going wheeling this sunday at bridgeport so I will try the lockers out there and see what happens. I have run it in some dirt and mud around my house and I couldnt get it to lock.

I bought it at 75400 miles so I figure the gear oil needs to be replaced anyway. No telling if the PO did it or whatnot.
03-22-2012 06:21 PM
MillerFam I just got my 04' Rubi about two months ago. Both lockers worked when I test drove it in the dirt. When I got it home I tried to activate them in the street just to check them out and the front would not engaged. I looked underneath and no hoses or wires were disconnected. A week later I took it out wheeling and as soon as I got it in the dirt, both lockers worked without incident. Per the owner's manual, you have to be in 4LO and at a speed under 10mph to activate, but it already sounds like you are doing that.
03-21-2012 09:32 PM
mark52 OK, I might be able to help you out a little. My front locker was doing the same thing when we bought our 06 rubi last summer. the rear locker worked great-the indicator light would blink for a few seconds then turn solid(locked). pushing the locker button again would result in the light blinking, never turning solid and thus, not locked. I got under the jeep to find the air hose pulled off of the diff and i saw the wire that you are talking about broke off right at where it goes into the diff. The wire is what tells the indicator light if the locker is locked but apparently it has to be working in order for the locker to work. I did try to just plug the air hose in correctly but it still wouldn't lock.
I cant tell by your picture-can you just plug it in? I'd post a pic of mine but all you really need to do is go look at your rear diff. If it is a problem with that wire as was mine i have some bad news for you. That wire( about 12" long) is a $70 part from jeep. In order to install this part, the axle shafts have to be pulled along with the locker parts in the diff. The place that i bought the jeep from only charged $300 to do this. he said most places would have charged upwards of $600.
That said, if you have this done, have someone that knows what they are doing do it. After having the locker fixed, the axle started leaking gear oil. Fed up with the guy who fixed the locker i took it to a better mechanic to have the gear oil leak fixed. He found that the seals were all beat up from the axle shafts being put back in incorrectly and charged $470 to fix the leak again having to pull the axle shafts to replace the seals. About a week after he fixed it it started to leak again from the same spot. Took it back to have it fixed under warantee this time. This time he found a $2 part that goes on the axle shaft that guides it into the tube and into the seal without messing the seal up. Now my lockers work and my axle no longer leaks gear oil.
03-21-2012 06:46 PM
TJRubi I wouldn't be so quick to be pulling stuff apart. When the air lockers are not used they get cantankerous. I would take some time and get in the dirt and try them. Moving around seems to help but "YOU MUST BE IN DIRT OR SAND". Sometimes just moving forward and back allows them to lock other times I've found that they lock with a small steering input. I do everything real slow and small increments until both lights are on full time. Sometimes when not used mine take as much as 10-15 minutes of moving around before they engage. As an aside there is dirt next to my normal gas station--everytime I fill up I go over and exercise both lockers--they are a lot quicker to engage when used regularly.
03-21-2012 04:19 PM
shadews
Quote:
Originally Posted by 91badass View Post
Right, so you problem is the compressor, maybe flip the plugs, that will narrow down your problem of is it the compessor, the line to the locker, or the locker itself.
Aright sounds good! Thanks for the help. I cant get to until friday or this weekend though ugh.
03-21-2012 03:24 PM
91badass althogh I know that those wires and plugs get pretty dry and crispy down there, becareful not to break them.
03-21-2012 03:23 PM
91badass Right, so you problem is the compressor, maybe flip the plugs, that will narrow down your problem of is it the compessor, the line to the locker, or the locker itself.
03-21-2012 03:22 PM
shadews
Quote:
Originally Posted by 91badass View Post
ya , dont recall the air pressure off that compressor, but its real low. The locker will engage with out feedback, but i dont know how the jeep computer will act if it doesnt see feedback. yuo could probably verify voltage on that loop, and then even jumper it out to trick the jeep, for test purposes ofcourse.
I just had someone sit in the jeep and press the button while I was under. Both compressors sound like they kick on and whatnot. I suppose its time to check the air hoses.....if those are fine then I think I might be hosed lolol.....
03-21-2012 03:14 PM
shadews
Quote:
Originally Posted by 91badass View Post
ya , dont recall the air pressure off that compressor, but its real low. The locker will engage with out feedback, but i dont know how the jeep computer will act if it doesnt see feedback. yuo could probably verify voltage on that loop, and then even jumper it out to trick the jeep, for test purposes ofcourse.
Yeah the light just flashes because it can't tell if the locker is engaged, but the locker is for sure not engaged.
03-21-2012 03:04 PM
91badass ya , dont recall the air pressure off that compressor, but its real low. The locker will engage with out feedback, but i dont know how the jeep computer will act if it doesnt see feedback. yuo could probably verify voltage on that loop, and then even jumper it out to trick the jeep, for test purposes ofcourse.
03-21-2012 02:59 PM
shadews
Quote:
Originally Posted by 91badass View Post
actuator air signal comes from the switch, then when the locker engages , the signal is sent back and the locker light stops flashing and goes solid.
So basically if the switch is pressed the locker will engage regardless of the sensor wire......alright well what do I need to check? The compressor and the hose going to front locker?
03-21-2012 02:58 PM
91badass and yes , you have to be in 4 lo
03-21-2012 02:57 PM
91badass actuator air signal comes from the switch, then when the locker engages , the signal is sent back and the locker light stops flashing and goes solid.
03-21-2012 02:37 PM
shadews
Quote:
Originally Posted by Cons_Table View Post
Hmm wikipedia says that they are air lockers. Found this picture online...assumming this is the factory rubicon locker...looks like there is an inlet for the air line

Yeah its an air locker. The real question now is the locker wont engage, but I found the overflow hose, the air hose, and the wire. The wire isnt connected. Will the locker engage without that wire connected or will the wire prevent it from sending a signal to the compressor?
03-21-2012 02:16 PM
shadews
Quote:
Originally Posted by shadews View Post
yeah I was in 4LO lol....I thought they were air too, but the only things coming out of the diff are the overflow hose and this random wire with a plug thats not attached to anything.
OK i think I am retarded.....Actually Im pretty sure Im retarded. The wheels were harder to turn so I am assuming that the locker was engaged and this wire is for the dash light that keeps blinking. Any suggestions?
03-21-2012 02:14 PM
Cons_Table Hmm wikipedia says that they are air lockers. Found this picture online...assumming this is the factory rubicon locker...looks like there is an inlet for the air line

03-21-2012 02:07 PM
shadews
Quote:
Originally Posted by Cons_Table View Post
I thought the TJ rubis were air, (not sure either though). How did you try to turn the lockers on? I believe I have seen that you have to be in 4LO and going slower than a certain speed unless you have bypassed this feature (like most people do).

EDIT: nevermind...if your rear locker worked but not your front, i dont think my statement applies lol.
yeah I was in 4LO lol....I thought they were air too, but the only things coming out of the diff are the overflow hose and this random wire with a plug thats not attached to anything.
03-21-2012 02:03 PM
Cons_Table I thought the TJ rubis were air, (not sure either though). How did you try to turn the lockers on? I believe I have seen that you have to be in 4LO and going slower than a certain speed unless you have bypassed this feature (like most people do).

EDIT: nevermind...if your rear locker worked but not your front, i dont think my statement applies lol.
03-21-2012 01:59 PM
shadews
Front Locker problems

So today I was trying to test out my lockers since I have never used them before. I have an 04 Rubicon. My rear locker went fine, but my front locker didnt work. I searched and people said to check the hoses and compressor. I dont think I have air lockers? I think mine are electric (can anyone confirm)? Anyway, I crawled under and I found a wire coming out of the diff to a plug that isnt connected to anything......I am assuming this is my problem, but I cant for the life of me find the wire it is supposed to connect to! Help please! Pics coming in a bit.

Edit:

Here are the pics!

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