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Popping Noise Coming From NP-247 Transfer case

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Old 07-06-2010, 10:47 PM
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Default Popping Noise Coming From NP-247 Transfer case

This is on my 99 Wj with the 6.5" lift i just put a new motor in it and decided to fix the popping noise coming from The Transfer case when i would put a load on it or try and pull something in 4LOW this jeep comes with the NP-247 TC

Once i got the TC apart i found out that the oil filter was chewed to pieces and small little delivery tube and ruber connecting hoses were disconnected so basically the there was no oil being circulated.

I have checked all the visible gears for wear and tear and have no sigh of any wear or grinding of any kind.

Now my question is has anyone had a similar problem?
I need some Help!!! I want to put my Jeep Back together
Old 07-06-2010, 11:10 PM
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your chain is streched out you need to replace it
Old 07-06-2010, 11:15 PM
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that could be i can go buy one and compare the two and see if it's streched out but i dont see any sigh that the chain has been jumping any teeth
Old 07-06-2010, 11:46 PM
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it doesn't sound like its stretched enough to jump teeth but enough to bounce around and damage the pump and such
Old 07-06-2010, 11:56 PM
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true or that thing just fell off i do some pretty crazy S@#% on this jeep and the little pump hose and filter could have just fell off im going to try and compare the old chain with a new one see just in case though
Old 07-07-2010, 07:59 AM
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that sounds like a good plan that's what i would do if it were me then you will have a comparison for the next time it starts with funny noises
Old 07-07-2010, 08:21 AM
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If you can move the chain at all (any slopp) its bad. I had the exact same problem with my 94...Tj
Old 07-07-2010, 09:17 AM
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really it thought that chain was supposed to have a little play in it ill give that a shot today ill let you know how it goes or if i can even find it somewhere in town today

Last edited by giwill; 07-07-2010 at 10:39 PM.
Old 07-07-2010, 10:46 PM
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okay i found the chain had to drive clear to the other side of houston but i found it compared it to the old one i took off and there was like 1/4" difference meaning that mine had strech that much i dont know if that was my problem but i bought it and put on today also found the little filter or screen that goes to the fluid pump that had come off and been chewed up and intalled it also i almost got all back together and i broke a little rubber O ring so ill have to continue on it tomorrow after i buy the part so far so good
Old 07-08-2010, 11:57 PM
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sounds like your almost there a 1/4" play im surprised it wasn't making more noise than it was
Old 07-09-2010, 10:54 PM
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yeah i got the TC back together now but the jeep will not shift into gear now i just replace the motor on this jeep(4.7L) and i think i messed up the fluid pump on the trany when i put it back together this suck
Old 07-10-2010, 07:00 AM
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wow that does suck
Old 07-28-2010, 09:12 PM
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Originally Posted by giwill
This is on my 99 Wj with the 6.5" lift i just put a new motor in it and decided to fix the popping noise coming from The Transfer case when i would put a load on it or try and pull something in 4LOW this jeep comes with the NP-247 TC

Once i got the TC apart i found out that the oil filter was chewed to pieces and small little delivery tube and ruber connecting hoses were disconnected so basically the there was no oil being circulated.

I have checked all the visible gears for wear and tear and have no sigh of any wear or grinding of any kind.

Now my question is has anyone had a similar problem?
I need some Help!!! I want to put my Jeep Back together

I have a similar problem on my jeep. And I could not fix it anymore so I have decided to set it aside.

Last edited by venomouse; 07-31-2010 at 03:27 PM.
Old 07-29-2010, 10:35 PM
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Originally Posted by giwill
yeah i got the TC back together now but the jeep will not shift into gear now i just replace the motor on this jeep(4.7L) and i think i messed up the fluid pump on the trany when i put it back together this suck
Sheeesh...one problem after the other. It's quiet sometime since you've posted. I guess you're busy fixing the jeep. How is the jeep progressing?
Old 07-29-2010, 10:54 PM
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Moved to Grand Tech.


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