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Old 11-19-2008, 07:55 PM   #1
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N E 1 Flat tow with rear automatic locker?

Does anyone flat tow their jeep with an automatic locker in the rear like an Aussie locker, Lock-right locker or Detroit Locker? Does it cause any problems?

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Old 11-19-2008, 08:03 PM   #2
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No issues. Just make sur your transfer case is in neutral and your tranny is either in gear or in Park. Don't make the mistake of thinking the tranny should be in neutral, it shouldn't.

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Old 11-20-2008, 09:38 AM   #3
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Jerry,

What difference does it make with the transmission? If the transfer case is in neutral, the tranny could be anywhere, so I thought. Please explain this for those of us that don't understand.

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Old 11-20-2008, 02:21 PM   #4
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It has to do with preventing the transmission from rotating from parasitic drive from the axle via the transfer case that will cause it to spin if not prevented from rotating by being in gear or in Park. It would not be getting its required/normal lubrication in that mode so if it were spinning from parasitic drag on its output shaft which is connected to the t-case which can still spin even in neutral, bearings could burn up.

It's not something I made up, the t-case neutral and tranny in gear/Park is how your owners manual will describe how it must be configured like that for flat towing.
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Old 11-20-2008, 05:00 PM   #5
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Thanks. I didn't think you were making it up. I thought the t-case being in neutral actually stopped any output (or input) to the driveshafts, thus the tranny would not turn. Learn something new every day.
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Old 11-20-2008, 05:10 PM   #6
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I flat tow my Jeep and I have a rear locker. No problems at all.

I'm told that you can't flat tow with an automatic locker in the front. I've yet to find someone who can verify that it would be a problem, but I'm not willing to try without hearing from someone who has done it successfully.
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Old 11-20-2008, 07:56 PM   #7
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I wouldn't think the front would be an issue at all. Especially with manual hubs. I don't think the auto hubs are engaged unless you are in 4wd so if t-case is in neutral the hubs should be free spinning. Right?
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Old 11-20-2008, 09:49 PM   #8
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TJ's have full time hubs. The front end is always turning when the vehicle is moving, regardless of the transfer case gears. The transfer case disconnects the front driveshaft from the transfer case when in 2WD.

As for the original post, I would not think it to be a problem as the locker only works when there is power applied. I do not have a front locker but with my rear auto locker it only engages when power is going through the driveshaft. I think front would be ok with flat towing, though someone with a front locker could chime in here.
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Old 11-21-2008, 07:35 AM   #9
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Quote:
Originally Posted by compshooter View Post
TJ's have full time hubs. .......

As for the original post, I would not think it to be a problem as the locker only works when there is power applied. I do not have a front locker but with my rear auto locker it only engages when power is going through the driveshaft. I think front would be ok with flat towing, though someone with a front locker could chime in here.
Yea I really need an answer to this question now. I was planning on Aussie lockers front and rear. I assumed the front hub were not engaged unless you were in 4WD.

It looks like I will be OK in the rear.

The new question is... can I flaw tow with an autolocker in the FRONT? Anyone do this?

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Old 11-21-2008, 08:56 AM   #10
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This is certainly no definitive answer on how it'd tow with an autolocker up front but I SUSPECT it'd be ok.

One thing about automatic lockers. They are always locked except when the outside side of the locker unlocks so that wheel can rotate faster through a turn. But when no power is being sent through them as happens to a front locker when you're in 2wd, it is just so lightly locked that it unlocks so easily that you barely notice its presence.
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Old 11-21-2008, 01:40 PM   #11
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It makes sense to me that flat towing with an autolocker in the front would be fine. I asked the Aussie guy about it at an Offroad Expo and he said that it will damage the locker if I flat towed it and I would need to also install hubs in order to make it work without damage. I've asked many others and all I can get is that it should be fine. I don't want to invest in one until I have a real answer. I've asked the question on all the boards and have still not gotten an answer from someone who actually flat tows with a front auto locker. So that all being said, I'm running open in the front until I either get an answer or have saved enough to get a selectable locker for the front.
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Old 11-24-2008, 08:20 AM   #12
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Well this is really bugging me now. I hear it is OK to flat tow with an auto locker in the rear but not in the front... what is the difference? The outside wheel spins faster going around corners in both the front and back.

Also, a buddy of mine had f&r lockers on a vehicle he was trying to sell but the potential buyer had to back out of the deal because it would not tow correctly behind hsi vehicle.
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Old 03-18-2016, 01:33 PM   #13
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Reviving this thread.... I'm getting ready to put a Powertrax No-Slip upfront in the Dana 30. I flat tow occasionally, usually twice a year. Will the locker cause an issue? Does anyone have definitive firsthand experience? I have 2001 Sahara auto tranny; have had zero problems towing with transfer case in Neutral and transmission in Park.
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Old 03-18-2016, 02:44 PM   #14
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Quote:
Originally Posted by vtjohn View Post
Reviving this thread.... I'm getting ready to put a Powertrax No-Slip upfront in the Dana 30. I flat tow occasionally, usually twice a year. Will the locker cause an issue? Does anyone have definitive firsthand experience? I have 2001 Sahara auto tranny; have had zero problems towing with transfer case in Neutral and transmission in Park.
Don't have a definitive answer, but do have a question that might help. How would your front axle tell the difference whether it was being pulled or pushed? In the case of towing, it is freewheeling and the front driveshaft is being turned via the front diff same as it would be if it were in 2wd being pushed around by the rear wheels.
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Old 03-18-2016, 05:56 PM   #15
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Quote:
Originally Posted by Water Dog View Post
Don't have a definitive answer, but do have a question that might help. How would your front axle tell the difference whether it was being pulled or pushed? In the case of towing, it is freewheeling and the front driveshaft is being turned via the front diff same as it would be if it were in 2wd being pushed around by the rear wheels.
That is exactly my thoughts, but have read some "hearsay" threads when doing a Google search that the wheels are locked when tracking straight and sometimes may not "unlock" when making a left turn. Admittedly, it seems this was reported more often in YJs (because of not having a "true" Neutral?) than TJs.

I'm hoping someone on this forum has flat towed with an Aussie or Lockright. Mine is coming in next week, but I'm now cautious about installing it.

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