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Unread 06-08-2013, 11:22 PM   #16
Thegdog
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Just found this. Really good price!


http://www.ebay.com/itm/Jeep-NP247-2...-/220703876582

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Unread 06-09-2013, 08:15 AM   #17
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Also, Would it be possible for my 4x4 to work when part-time? Seems like it is working when in that mode. I might be wrong however. Sorry I don't know much about transfer cases.
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Unread 06-09-2013, 08:35 AM   #18
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Quote:
Originally Posted by Thegdog View Post
Just found this. Really good price!


http://www.ebay.com/itm/Jeep-NP247-2...-/220703876582
Thats not really a very good price at all. You can do a swap for about a third of that price. Id also be a little cautious with that seller since the title says its a viscous coupler and the description says its a progressive coupler. Either he doesn't know the difference, or hes too lazy to change the title and therefore maybe too lazy to send you the right part.

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Originally Posted by Thegdog View Post
Also, Would it be possible for my 4x4 to work when part-time? Seems like it is working when in that mode. I might be wrong however. Sorry I don't know much about transfer cases.
Do you mean in 4lo? Your 4wd should work in that mode because it bypasses the progressive coupler and physically locks the front and rear driveshafts together.
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Unread 06-09-2013, 09:53 AM   #19
Thegdog
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Quote:
Originally Posted by ezflip View Post
Do you mean in 4lo? Your 4wd should work in that mode because it bypasses the progressive coupler and physically locks the front and rear driveshafts together.
Thats good to hear, the only time I would really need 4x4 in the summer/fall would be a in a muddy field. In that case I would use 4lo. I may just wait till Fall the fix the coupler. Assuming I am not hurting anything doing that?
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Unread 06-09-2013, 12:03 PM   #20
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There are quite a few 247 t-cases listed on car-part.com for around $400.

Not sure if you want to gamble on a used part or not, but I think its a somewhat safe gamble. The 247 t-cases don't seem to fail very often.
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Unread 06-09-2013, 12:09 PM   #21
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Quote:
Originally Posted by Wheelin98TJ View Post
There are quite a few 247 t-cases listed on car-part.com for around $400.

Not sure if you want to gamble on a used part or not, but I think its a somewhat safe gamble. The 247 t-cases don't seem to fail very often.
Really? In the 5 years Ive been on this forum, there has been at least two or three new threads started every month with failed 247s. Most of them end up with two or three more people posting in them with the same issues. Ive only seen one grenaded 242 and only the occasional shift fork issue. Nowhere near the frequency of failures as the 247. On top of that, used 242s can be had for around $100, $200 for the HD version.
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Unread 06-09-2013, 12:34 PM   #22
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Quote:
Originally Posted by ezflip View Post
Really? In the 5 years Ive been on this forum, there has been at least two or three new threads started every month with failed 247s. Most of them end up with two or three more people posting in them with the same issues. Ive only seen one grenaded 242 and only the occasional shift fork issue. Nowhere near the frequency of failures as the 247. On top of that, used 242s can be had for around $100, $200 for the HD version.
Probably half those threads, maybe more, end with the front driveshaft or the vari lok diffs being the issue.
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Unread 06-09-2013, 12:41 PM   #23
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Originally Posted by Wheelin98TJ View Post
Probably half those threads, maybe more, end with the front driveshaft or the vari lok diffs being the issue.
Umm, no. I was only counting the ones with PC issues.

And there is quite a big difference in symptoms between driveshaft or vari lock issues and PC issues.
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Unread 06-09-2013, 12:58 PM   #24
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Quote:
Originally Posted by ezflip View Post
Umm, no. I was only counting the ones with PC issues.

And there is quite a big difference in symptoms between driveshaft or vari lock issues and PC issues.
I know there are big differences in symptoms, however if you search "NP247", you'll see several threads with incorrect 247 titles and other issues.

I tried searching for failed 247 threads and I didn't find much at all.

Even searching "progressive" comes up pretty empty. There is talk about it, but rarely are they actual failures.
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Unread 06-09-2013, 01:08 PM   #25
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Quote:
Originally Posted by Wheelin98TJ View Post
I know there are big differences in symptoms, however if you search "NP247", you'll see several threads with incorrect 247 titles and other issues.

I tried searching for failed 247 threads and I didn't find much at all.

Even searching "progressive" comes up pretty empty. There is talk about it, but rarely are they actual failures.
Youve been around long enough to know the search function on here is pretty useless. That being said, if you search "NP242" youll find more threads of failed 247s with people recommending a swap to 242 than you will failed 242s.
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Unread 06-09-2013, 01:46 PM   #26
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I've also been around long enough to see that the t-case is rarely the problem.

It is most often speculation.

Even this thread, "it seems my VC isn't working". Not much verification or confirmation there is really a problem there.
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Unread 06-09-2013, 02:52 PM   #27
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Quote:
Originally Posted by Wheelin98TJ View Post
I've also been around long enough to see that the t-case is rarely the problem.

It is most often speculation.

Even this thread, "it seems my VC isn't working". Not much verification or confirmation there is really a problem there.
You are certainly entitled to your opinion, but thats all it is, opinion. Factually, you are flat out wrong.

You may think you are giving sound advice here, but these are not TJs. We are not dealing with short wheel bases, 35s on weak factory axles, or very stout 231 transfer cases. If you are in the grand cherokee section to help moderate, fine. But keep your TJ knowledge in the TJ section and let us WJ guys help out other WJ guys. Thanks
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Unread 06-10-2013, 12:19 AM   #28
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Do you have some links with documented 247 failures?

I don't think they are as common as you are implying and I'm being more realistic about it. That is my opinion and you can disagree.
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Unread 06-10-2013, 03:42 AM   #29
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To the OP............


Go buy two quarts of 247 oil and drain and fill. Drain into a clean drain pan where you can see the oil. Any metal start looking at your options. No metal fill with fresh oil.

Then go find a parking lot and do three tight (steering lock tight) figure eights. Then turn and do three more starting from the opposite direction. That will purge all the air out. Keep the stereo off and windows down to listen for noise.

A few here have fixed their TC with a oil change. Though the figure 8's afterwards to purge the air out of the hydraulic pump may have been all that's necessary.
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Unread 06-10-2013, 07:35 AM   #30
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The 247 is a tough case even behind a V8 in jeep's heaviest and most powerful model at the time. The 247s don't blow up any more than the 242s do so far as I can tell. The progressive coupler is a serviceable item, and it will wear. The 242 has no similar part, but that doesn't mean it's fair to say that the 247 is less reliable for that. That's like saying an open diff is better than a trac lok because the trak lok will need to be rebuilt eventually
Further to that, most of the PC failures are due to neglect or poor maintenance.
As TJ pointed out, most reported 247 failures aren't the 247 at all, or at worst are the PC. I have yet to see one "blow up". I'm sure it's happened, but I've not seen it. I'm not shy about crapping on the WJ's for being junk either, but the 247 is nothing to complain about.
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