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Old 07-30-2008, 05:58 PM   #1
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detroit question not starting another debate

I recently had a detroit locker installed in my rear dana 44, and I love it. I have one question though.

I was told that it will unlocked every 40 to 50 miles due to built in slack (wrong word), and mine did that for the first 500 miles. It now seems to be doing this every 10 to 20 miles and a lot harder now. Does this mean that it is broken in now or should I be worried? Is it my driving style? Any help would be appreciated. Also is there any maintence besides the regular fluid changes?

Thanks guys.

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Old 07-30-2008, 06:09 PM   #2
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My Detroit Locker is actually pretty well behaved on my near-daily driver TJ. Most of how well a Detroit Locker behaves depends on the driver. Its normal mode is locked, it only unlocks when you turn left or right. Is your left/right tire pressure the same?

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Old 07-30-2008, 06:19 PM   #3
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Its is well behaved and I love it. I didnt think about the tires pressure though. It doesn't unlock when driving just slips on turns occasionally when starting off and then a loud bang. It doesnt bother me just dont wanna break it.
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Old 07-30-2008, 07:01 PM   #4
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Don't worry. Sounds pretty normal. Jerry is right about the tire pressure. Detroits are way more sensitive to that than say a lock rite.
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Old 07-30-2008, 08:33 PM   #5
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That is correct
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Old 07-30-2008, 08:38 PM   #6
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a friend had the same after he installed a new spare tire and the other tire on the axle was 25.000 mls old.
airing down the new tire a bit helped.
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Old 07-31-2008, 07:50 AM   #7
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Ok thank guys. I will check the tire pressure. I also forgot to mention I drive a manual so the locker locks and unlocks a lot more than an auto. I know Jerry you just switched yours, so you've probably driven on both. I guess mine has a chance to unlock and lock a lot more than an auto (switching gears and such).
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Old 07-31-2008, 11:01 AM   #8
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It doesn't lock and unlock except when you're turning left/right. Its normal mode is to be locked, it only unlocks to allow the outside tire to rotate faster through a turn. I don't notice much difference in how it works from when my TJ had a 5-speed manual to how it works now that it has an auto tranny. I don't doubt it could be a tad smoother but it's not like the difference was noticeable after the tranny conversion.
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Old 07-31-2008, 12:27 PM   #9
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Really??

I thought that it unlocks when there is no torque applied to it, ie clutch is applied.
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Old 07-31-2008, 12:57 PM   #10
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Really??

I thought that it unlocks when there is no torque applied to it, ie clutch is applied.
Nope, not at all. There is no clutch in a Detroit Locker. That is how all automatic lockers work, including lunchbox lockers like the Lockright, No-Slip, and Aussie too. They are normally locked except when the outside wheel is allowed to ratchet faster than the inside wheel for a turn.
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Old 07-31-2008, 01:01 PM   #11
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Sorry, I meant in clutch as in manual transmission.

Isnt it possible to put a detroit in the front axle of a jeep with no adverse reactions due to the front driveshaft not being engaged in two wheel drive. This would mean no torque applied and it stays unlocked.

Sorry, last question just trying to learn.
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Old 07-31-2008, 01:07 PM   #12
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Isnt it possible to put a detroit in the front axle of a jeep with no adverse reactions due to the front driveshaft not being engaged in two wheel drive. This would mean no torque applied and it stays unlocked.
Even with no torque applied, it is still locked. That is true with any automatic locker.

That said, even though it is locked, it is not locked "hard" without torque being sent to it so in 2wd, it unlocks extremely easily. So easily that most never notice it locking/unlocking for turns when you're in 2wd. That is true with the Detroit Locker, No-Slip, Aussie, or Lockright. When in 4x4, it is locked up harder so it has more trouble unlocking because there is torque being applied through it.

So the bottom line is that in 2wd, a front automatic locker is locked but it is so lightly locked that it unlocks easily enough that you barely notice its presence. When my TJ is in 2wd, I can't even tell my No-Slip is present.

If it were up to me, I would change the description of all such "automatic lockers" to "automatic unlocking lockers".

Check out the post on lockers at http://www.jeepforum.com/forum/showp...45&postcount=1 which might be of interest to you. Sorry it's a bit wordy.

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