91 yj arb locker problem - JeepForum.com

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post #1 of 25 Old 02-25-2013, 07:32 PM Thread Starter
doc2ofdex13
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91 yj arb locker problem

well, here it is. I just bought a yj equipped with arb lockers front and rear. nice little rig, but the rear locker is engaged and won't disengage at all. it was sitting in a field for about a year without reagular movement. I have tried to cycle the front and rear switches off and on repeatedly with no results. this afterneen I was doing some troubleshooting and found what looked like a drop of dif fluid on the floor. so I took a pic to see if any of you pros could help me out. I see a lot of experience here and hope one of you know of a simple solution to help dis engage this locker. thanks ahead of time for helping out a hapless noob.

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post #2 of 25 Old 02-25-2013, 09:21 PM
Joe Dillard
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post #3 of 25 Old 02-25-2013, 11:11 PM
fratis
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theres a bit of rework involved in just that mess alone.

-insert meaningless out-of-place political diatribe-
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post #4 of 25 Old 02-26-2013, 10:06 AM
bassnmick
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When I first installed my rear locker I had a knucklehead moment and installed the solenoid backwards. The locker locked but would not release until I disconnected the air line to the locker. You might try disconnecting the air line and see if it unlocks.
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post #5 of 25 Old 02-26-2013, 11:35 AM Thread Starter
doc2ofdex13
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Last edited by doc2ofdex13; 02-26-2013 at 11:47 AM.
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post #6 of 25 Old 02-26-2013, 09:35 PM
bassnmick
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To clarify my issue.. The solenoid assy opens a valve when powered on allowing air pressure to the locker. When switched off the valve closes and pressure from the locker is vented out at the solenoid block. With the solenoid block installed backward the valve opened and pressurized the locker just fine but when the solenoid powered off the vent was on the compressor side instead of the locker side so the locker was unable to vent its pressure and stayed engaged. I hope that makes sense...:-)
Was your locker engaged from the time you picked the rig up or was it a deal where it just didnt unlock after you tried it the first time?
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post #7 of 25 Old 02-26-2013, 09:55 PM
Joe Dillard
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post #8 of 25 Old 02-27-2013, 12:52 PM Thread Starter
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The locker was locked from the time I bought the rig. The previouse owner had also thought it was all time 4X4 with permenant lockers, so he never messed with it. He also had drivin it just a few times around his property before leaving it unattended for a year or so before I bought it. Turns out that he had no upperbody strength and 4 by was disengaged just fine. But the locker was another story. You get the typicl hiss when you flip the switch off, the solenoids make a clicking noise when the switch is engaged. The rear just wont unlock and I found a small drip the other day coming from the valve. Can I just disconnect the hose to release the pressure or open the fluid fill bolt? I havnt made a move to repair until I got a little more guidance.
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post #9 of 25 Old 02-27-2013, 02:12 PM
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You can certainly just disconnect the hose to relieve the pressure. I would take a look inside the axle eventually though.

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post #10 of 25 Old 03-02-2013, 06:30 PM Thread Starter
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anti, I did open the diff up. it was clean as could be. but I found the locker was BEAT UP!!!! here are some pics below. could you guys point me in a direction when useing a used axel, like what types I can use and from what vehicles? I am not a gear head but I am also not new to a set of wrenches either. but replacing the clock works in an axle isn't my strong suit. here are the pics.
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post #11 of 25 Old 03-02-2013, 06:53 PM
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Quote:
Originally Posted by doc2ofdex13
anti, I did open the diff up. it was clean as could be. but I found the locker was BEAT UP!!!! here are some pics below. could you guys point me in a direction when useing a used axel, like what types I can use and from what vehicles? I am not a gear head but I am also not new to a set of wrenches either. but replacing the clock works in an axle isn't my strong suit. here are the pics.
Yikes. Maybe your pinion is off a tad. or was at one point and they fixed it.
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post #12 of 25 Old 03-02-2013, 09:03 PM
Anticanman
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Ouch. Is that the Dana 35? Your locker is toast but I get your pinion is worse.

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post #13 of 25 Old 03-02-2013, 09:28 PM Thread Starter
doc2ofdex13
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here's the thing. I checked, best I could, and the pinion looks untouched. what it looks like to me, is that the installer put this thing in misaligned drove it, busted it, repaired what he had to and put the beaten and broken locker back in. I could be horribly wrong, but there were no metal chips or chunks in the case, makes me believe that the diff housing wad removed, housing cleaned and relubed. any advice on a rebuild of the locker, replacing the entire axle, or reinstalling a normal gear system? I'm thinking about just getting a used axle to install, but what type? suggestions?
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post #14 of 25 Old 03-02-2013, 09:29 PM Thread Starter
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p.s. it is a Dana 35
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post #15 of 25 Old 03-02-2013, 09:38 PM
Anticanman
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Pull it apart and check it out. There are tons of problems with Dana 35 arbs. Seems that there is a high percentage of them that just don't work out. Make sure you can get the cross shaft pin out. BE CAREFUL!

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