LT230 front output shaft noise - Defender Source
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  #1  
Old March 30th, 2011, 05:56 PM
dsh12
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Daniel Hayes
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LT230 front output shaft noise

Im experiencing a bunch of audible slop in the front output shaft of the transfer case (LT230). Not only can I move it laterally with my hand, it produces a very loud metallic clunking sound. It has been this way for sometime, but became painfully noticeable when running on the front axle when the rear drive shaft u-joint failed. Consequently, I believe the problem is isolated to the front output shaft. What would be the most common cause of this? Would the repair be involved?

Thanks,
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94D90 NAS 3.9 LT77 LT230T Soft Top

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  #2  
Old March 30th, 2011, 06:05 PM
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evilfij
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Bad seal --> low oil --> output bearing shot.

Mine has the same issue right now. I am going to swap out the whole case, but you may wish to try this repair.

http://www.discoweb.org/tcasebearing/index.htm

Ron
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  #3  
Old March 30th, 2011, 07:24 PM
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Frank Rafka
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I'd change the box out, if the front is bad, the rear is not far behind...I just got a used lt230 shipped for $225.00
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  #4  
Old March 30th, 2011, 09:09 PM
dsh12
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Daniel Hayes
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Quote:
Originally Posted by mongosd2 View Post
I'd change the box out, if the front is bad, the rear is not far behind...I just got a used lt230 shipped for $225.00
...shipped from who? Is it an earlier or later model (what is the model letter?)?
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94D90 NAS 3.9 LT77 LT230T Soft Top

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  #5  
Old March 30th, 2011, 09:38 PM
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Phillip
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Ive taken extremely good care of my truck for about 50k. It had a loose front output for maybe 15k, I was told no sweat. I know in one case a person replaced the bearing and still had play. The front output in my classic is sloppy, unknown mileage on the case but it doesnt have much slop and the input looked good when I installed it.

Did you replace all the ujoints? Do you know if you have the updated input spline in the t-case? Have you checked the fluid? Ive found that a half quart of lucas and mobil 1 does a good job if you over fill....

Im sure ill blow my transfer case.

FWIW
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  #6  
Old March 30th, 2011, 10:15 PM
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joe heins
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My T-case in my 95 d-90 had that same slop, was also getting very noisy, I thought this was "normal" for a while but it got worse so I put in a used LT230Q from a 98 disco and the difference was night and day. New box has no play in either front or back and is silent compared to old one. There are plenty of these boxes around, I would just get one and replace your current T-case
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  #7  
Old March 30th, 2011, 10:32 PM
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Frank Rafka
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Quote:
Originally Posted by dsh12 View Post
...shipped from who? Is it an earlier or later model (what is the model letter?)?
Drillbit...aka Marty Powell over on Dweb...his number is 270 576 7922

He's in Kentucky, so it should be a little cheaper for shipping, but the case maybe a little more expensive as you'll need a tcase from a D1 (need the vss on the rear output housing), not a D2 (doesn't have the vss, and he does have ones with cdl). He gets a little more for the D1 cases.

I didn't get the model number, as I really don't care if it's quieter, it's going in my 110 and I couldn't tell the difference anyways.



tell him I told you to call
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  #8  
Old March 31st, 2011, 07:22 PM
dsh12
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Daniel Hayes
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Im running expensive synthetic in the LT230; this maybe why it is still working. This can get expensive with the output shaft slopping around as it requires a bit of topping off. Replacing it with a used box seems like the way to go.
A few questions:
- a 98 Disco is considered a D1?
- what is vss and cdl?
- jhhorse, what did your LT230Q cost?
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94D90 NAS 3.9 LT77 LT230T Soft Top

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  #9  
Old April 1st, 2011, 06:00 PM
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Frank Rafka
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98 is a d1
Vss is the speedo connection on rear output housing
Cdl is the center lock on the tcase. Some d2 tcases don't have the nipple
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  #10  
Old April 1st, 2011, 06:07 PM
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Phillip
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is there anyway to get the VSS to work with the later DII transfer case
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  #11  
Old April 1st, 2011, 06:11 PM
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steve
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Quote:
Originally Posted by evilfij View Post
Good info there. I did mine a while back and I could not get it out with a hook... not a chance. A slide hammer did the trick. I did it still in the truck and it is easier than taking the case out.
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  #12  
Old April 2nd, 2011, 02:23 PM
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Jake K.
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Why don't you try and tighten the nut first!!!
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  #13  
Old April 2nd, 2011, 03:04 PM
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Frank Rafka
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Quote:
Originally Posted by rover4x4 View Post
is there anyway to get the VSS to work with the later DII transfer case
simple answer is no, couple of options, use the rear output housing from your existing case, or re-build the your original one, it will bolt up directly
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  #14  
Old April 2nd, 2011, 04:26 PM
jhhorse
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joe heins
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Daniel, Had my local mechanic source the T-case, after he inspected and resealed the box, (he changed some bearings) the total was 450 for the T-case, the D1 it came out of was wrecked with about 65K on it. The noise difference is remarkable, truck much smoother, got rid of a lot of vibration and clunks. Well worth it, IMO.
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