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The Original 3/8" Ruffstuff Diff Cover!Building a Bumper?Introducing MONSTALINER™ UV Permanent DIY Roll On Bed Line

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Unread 04-27-2011, 06:08 PM   #16
HurricaneRZA
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Quote:
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Not going to lie those are chuck Norris jokes lol but i don't know
Mean max??
Mean Max created Chuck Norris with some spare parts, two trac bars and some differential fluid.

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Unread 04-27-2011, 06:12 PM   #17
Mean Max
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I gotta say, this thread is pretty funny! Believe me, I'm stumped a lot more often than you may possibly think!

But thanks to MANY wonderful people in the Jeep community, especially here on JF, I have acquired more random Jeep knowledge than I ever thought I would. I only hope that passing along the things I've learned will somehow repay a portion of the debt of gratitude that I owe to so many.

And with that, I will now stump myself & ask for YOUR help!

I purchased a transfer case from Craigslist two days ago, sight unseen for $100 and a buddy picked it up for me. All the owner could tell me was that it was from a Cherokee (XJ or ZJ was not specified) and he didn't know what model it was. I bought it anyway.

As it turns out, it is an NP242 Part-time/Full-time transfer case. I am pretty familiar with these as I have swapped an NP249 for an NP242 in a ZJ I used to have, and our family WJ & our son's ZJ both have them too.

However, this one has something I've never seen. It seems to have 2 fluid lines running in/out above the front yoke. To where? For what? It's marked as a 242 AMC, but the build date is 3-15-96 which was long after AMC was dead & gone.

School me.

Max

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Max has a picture of every Jeep part ever made.
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No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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Unread 04-27-2011, 06:16 PM   #18
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I don't know about a factory option for that Max but I do know of a mod for the NP231 that involves drilling and tapping the huge steel plugs and putting a hose fitting in each connected by a clear hose. It allows for easier fluid changes, plus you can see the color with the clear hose.

I'm sure that's not the answer but that's what I would use it for.

Maybe some kind of fitting for a cooler since it was a part-time/full-time case? It does a mini oil pump on the output shaft, correct?
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Unread 04-27-2011, 06:22 PM   #19
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I have stumped Mean Max. and Max, that looks like someone did it themselves? Maybe to help the fluid flow through the transfer case?
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Unread 04-27-2011, 06:52 PM   #20
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Quote:
Originally Posted by Tompatt View Post
I have stumped Mean Max. and Max, that looks like someone did it themselves? Maybe to help the fluid flow through the transfer case?
I don't know, it looks like the case was cast with two flat spots there meant just for the purpose of making a hole for those nipples.
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Unread 04-27-2011, 06:58 PM   #21
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I don't know, it looks like the case was cast with two flat spots there meant just for the purpose of making a hole for those nipples.
That is how they are made, look at this picture from Novak

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Unread 04-27-2011, 07:12 PM   #22
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Originally Posted by Tompatt View Post
That is how they are made, look at this picture from Novak

Interesting, it is cast with those flat spots but without the nipples installed. Were they anticipating something?
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Unread 04-27-2011, 07:14 PM   #23
Mean Max
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I agree, I have seen the casting bosses on the cases before. I've just never seen them used.

I can't believe that the small slinger pump on the tailshaft would be able to supply the volume/pressure that a line of that size would require.

You can bet I'll be tearing into it to see what's going on.

Max

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Quote:
Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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Unread 04-27-2011, 07:17 PM   #24
Tompatt
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Originally Posted by Skydmark1 View Post
Interesting, it is cast with those flat spots but without the nipples installed. Were they anticipating something?

guess we will never know. i searched for a pic of the inside of the 242. it doesn't look like you could tell where the bumps were on the outside. maybe to somehow strengthen the case?
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Unread 04-27-2011, 07:19 PM   #25
Tompatt
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Originally Posted by Mean Max View Post
I agree, I have seen the casting bosses on the cases before. I've just never seen them used.

I can't believe that the small slinger pump on the tailshaft would be able to supply the volume/pressure that a line of that size would require.

You can bet I'll be tearing into it to see what's going on.

Max

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Keep us updated on what you find.. maybe make another write up
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Unread 04-27-2011, 07:23 PM   #26
Mean Max
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Quote:
Originally Posted by Tompatt

Keep us updated on what you find.. maybe make another write up
Will do! And as usual, pics will be included!

Max

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Quote:
Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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Unread 04-27-2011, 07:30 PM   #27
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Max... I have figured out why you have never seen those lines before in a Jeep.

What you apparently have is a hummer 242 transfer case.

Inside you should see a cooling loop. (which is under recall) http://www.hummerknowledgebase.com/rungear/cooloop.html

now other then this I have no information on HOW it cools.... etc..
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Unread 04-27-2011, 07:42 PM   #28
Tompatt
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Quote:
Originally Posted by Mark05059 View Post
Max... I have figured out why you have never seen those lines before in a Jeep.

What you apparently have is a hummer 242 transfer case.

Inside you should see a cooling loop. (which is under recall) http://www.hummerknowledgebase.com/rungear/cooloop.html

now other then this I have no information on HOW it cools.... etc..
o damn. nice find.. heres another site.. http://flashoffroad.com/features/Tca...Jeep/tcase.htm
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Unread 04-27-2011, 07:44 PM   #29
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more info

Transmission fluid driven by transmission pressure of aproximately 90- 120 psi, goes through a cooler integrated with the engine oil cooler. From the cooler, the fluid goes though an intercooler loop inside the transfer case, and then back to the transmission. There is a bypass valve in circuit there to prevent the cooler fluid from all draining into the transmission pan.

http://www.hummerknowledgebase.com/r.../trancase.html
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Unread 04-27-2011, 07:45 PM   #30
Mean Max
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Quote:
Originally Posted by Mark05059
Max... I have figured out why you have never seen those lines before in a Jeep.

What you apparently have is a hummer 242 transfer case.

Inside you should see a cooling loop. (which is under recall) http://www.hummerknowledgebase.com/rungear/cooloop.html

now other then this I have no information on HOW it cools.... etc..
Ding, ding, ding!!!! Winna, winna, chicken dinna!

Blow up the pic of the tag that I posted. It says AMG, not AMC.

AM General, producer of the H1 Hummer.

What do I do with that?

It sure looks like a Jeep pattern. We shall see.

Max

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Quote:
Originally Posted by UltimatE View Post
Max has a picture of every Jeep part ever made.
Quote:
Originally Posted by Benderff View Post
No one here knows what they are talking about. You should try Pirate 4x4 they will be happy to help you.

There is no situation that cannot be improved with a small but well-placed explosive.
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