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Old January 3rd, 2006, 09:38 PM   #1
mschaffer66
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Default D35 Detroit question

The Bubicon just got a fairly new Super 35 with a Detroit locker in it. From what i've been told the axle was recently set up by DTS and has very little use.

When driving down the road at constant throttle the rear will pop and the jeep will jump a few feet to the right. Kind of like when the locker engages, but not as violent.

It doesn't seem random either, it seems to have some sort of distance interval to it. After driving for awhile it seems to have a rythm.

All I know is that this isn't normal. Does anyone have any ideas as to what could be wrong?

Thanks
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Old January 3rd, 2006, 10:34 PM   #2
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I would say that your problem lies in what this attaches to.
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Old January 4th, 2006, 08:02 AM   #3
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Check tire pressure. If the tire pressures aren't the same or the tires are not the same circumference then the Detroit sees it as a spinning wheel and will lock up. Which is why it has a rythmn to it, you have to drive for so long for the smaller wheel to "fall behind".

It's worse on the short wheelbase vehicles.

My next guess would be DTS....
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Old January 4th, 2006, 04:10 PM   #4
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x2 on the tire pressure and ACTUAL circumference of the tire. I had all kinds of crazy pushes out of my rear locker and it was from the tires not being the same pressure. I think they were only 3 psi off of each other...fixed that and it was fine again.
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Old January 4th, 2006, 07:04 PM   #5
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This might be some dumb ass after the fact information. The rear axle is an inch or two off of center. I have yet to adjust the rear track bar.

KillerB told Kerry today that this could cause it to unload and load...probably with the same effect as the tire pressure.
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Old January 4th, 2006, 07:55 PM   #6
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Quote:
Originally Posted by mschaffer66
This might be some dumb ass after the fact information. The rear axle is an inch or two off of center. I have yet to adjust the rear track bar.

KillerB told Kerry today that this could cause it to unload and load...probably with the same effect as the tire pressure.
An INCH OR TWO?!? You are dogtrackin like crazy, no wonder the locker's acting wierd....
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Old January 4th, 2006, 08:00 PM   #7
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Although my S35/Detroit will occasionally (and with no warning) unload and scare the sh!t outta me...
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Old January 5th, 2006, 03:54 PM   #8
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Today i adjusted the rear track bar and go the rear within 1/16" of being dead on, the front is about 3/16" off.

I checked the tire pressure and they are less than 1psi difference.

So far it doesn't seem to be doing what it was while driving straight. But now when I make a right hand turn I get a click/thump from the rear somewhere. The rate at which I turn seems to make a difference in the pace of the noise. When i turn to the left its fine.

I plan on changing the diff lube tommorow to make sure its good and full. To my best knowledge it is...but ya never know.

Any other ideas?
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Old January 5th, 2006, 04:06 PM   #9
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Use a square or something to measure very accurately to the center of the wheel to find the roll radius for both sides, in case theres a difference in size due to something other than air pressure..
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Old January 5th, 2006, 05:17 PM   #10
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I just went out and jacked up one side at a time and tried to spin the wheel with the lock outs engaged and the vehicle in park. I couldn't turn the tire and there wasn't much play to it. I assume this is a good thing. Also all lug nuts are tight in case anyone was wondering.
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Old January 5th, 2006, 09:14 PM   #11
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More info.

Went for a drive down I-94. The rythmic torquing to the right is now gone.

The problem I have now is that when i make a right hand turn there is a poping noise coming from the right rear wheel.

The axle is has the full floater kit and when I unlock the right rear wheel the noise goes away.

Does this mean that its somewhere after the lockout?

Thanks
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