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Unread 05-26-2012, 01:36 PM   #1
Scott2pt0
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Metal piece found in transmission fluid (pic)

I changed my tranny fluid a couple months ago but just finally dumped the old stuff today (pure laziness, I know). When doing so, an inch long piece of metal came out. I've probably put 1,000 miles on the Jeep since I changed the fluid with no noticeable issues, but seeing this thing come out has me a bit freaked out. Any idea as to what this is? Thanks in advance!



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Unread 05-26-2012, 01:53 PM   #2
Stu Olson
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Since its been a couple of months since you changed fluid, is there a remote chance that the piece of metal ended up in what ever you caught/stored the fluid in between then and now?
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Unread 05-26-2012, 01:55 PM   #3
Scott2pt0
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Quote:
Originally Posted by Stu Olson View Post
Since its been a couple of months since you changed fluid, is there a remote chance that the piece of metal ended up in what ever you caught/stored the fluid in between then and now?
Yes, very remote though. The container was just an open tub that has been sitting next to where I park the Jeep in the garage but no one walks on that side of it nor gets in the passenger seat while it's in the garage.

One end of the piece has some damage as if it was broken off something so I'm fairly sure it came out with the fluid.
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Unread 05-26-2012, 05:38 PM   #4
BLK00TJ
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I'm hoping someone just played a cruel, sick joke on you.
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Unread 05-26-2012, 08:14 PM   #5
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What diameter is it? Does your reverse lockout still work?
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Unread 05-26-2012, 09:39 PM   #6
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I don't know the links and I have not searched for them, but I have seen three other threads with almost the exact same picture as this. All reported that it came out of the transmission during a fluid change and the pin always looked broken on the end. Hope this helps.
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Unread 05-26-2012, 10:24 PM   #7
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Quote:
Originally Posted by auburnhunter View Post
I don't know the links and I have not searched for them, but I have seen three other threads with almost the exact same picture as this. All reported that it came out of the transmission during a fluid change and the pin always looked broken on the end. Hope this helps.
I was just thinking that..."I've seen this picture before." I do so LOVE transmission mysteries...as long as they're not mine.
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Unread 05-27-2012, 07:08 AM   #8
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Quote:
Originally Posted by auburnhunter View Post
I don't know the links and I have not searched for them, but I have seen three other threads with almost the exact same picture as this. All reported that it came out of the transmission during a fluid change and the pin always looked broken on the end. Hope this helps.
Hmmm, intersting. I did a quick search for "metal piece in transmission fluid" and came up empty but I'll try digging better. Thanks.
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Unread 05-27-2012, 07:11 AM   #9
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Wow, it is identical to what this guy found. http://www.jeepforum.com/forum/f9/me...ssion-1228905/ Unfortunately, it doesn't seem like he came to a conclusion. Crazy.
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Unread 05-27-2012, 07:42 AM   #10
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Quote:
Originally Posted by Scott2pt0
Wow, it is identical to what this guy found. http://www.jeepforum.com/forum/f9/me...ssion-1228905/ Unfortunately, it doesn't seem like he came to a conclusion. Crazy.
Looks like the locator pin. Use the link in my sig to see a PDF.
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Unread 05-27-2012, 07:50 AM   #11
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Is it from your 3550 or is it from an AX-15? Just happened to be glancing at some pics of an AX15 rebuild and saw this and though it looked very similar.



The entire rebuild with pics is here

http://www.4wdmechanix.com/Moses-Ludel-Rebuilds-the-Jeep-AX-15-Transmission,-Part-1-Disassembly-Inspection.html

How the hell a roller bearing could get dislodged from its cage once its installed in this AX15 is beyond me so I'm hesitant to say its a candidate...but it sure looks to be about the right size. I'm really hoping its just the locator pin mentioned.
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Unread 05-27-2012, 07:50 AM   #12
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Quote:
Originally Posted by flying_bosun View Post
Looks like the locator pin. Use the link in my sig to see a PDF.
That seems to be right. Thanks. Please forgive the ignorant question, but am I at risk of my tranny falling out? What is the solution I'm looking at?
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Unread 05-27-2012, 08:06 AM   #13
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This is purely a guess... but if it was a locator pin it would probably only serve to line something up during assembly. And probably doesn't serve any purpose after that point.

I recall some Ford Trannys that had a plastic plug or pin that was designed to push out and often was found in the pan later that also did something along these lines and scared people when they found it. But my memory is rather foggy on the specifics.
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Unread 05-27-2012, 08:11 AM   #14
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Quote:
Originally Posted by Scott2pt0

That seems to be right. Thanks. Please forgive the ignorant question, but am I at risk of my tranny falling out? What is the solution I'm looking at?
I'm sorry, but I have no idea what the answers are to those questions. You might try Googling "nv3550 locator pin" and see what turns up.
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Unread 05-27-2012, 09:45 AM   #15
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Quote:
Originally Posted by cphilip
This is purely a guess... but if it was a locator pin it would probably only serve to line something up during assembly. And probably doesn't serve any purpose after that point.

I recall some Ford Trannys that had a plastic plug or pin that was designed to push out and often was found in the pan later that also did something along these lines and scared people when they found it. But my memory is rather foggy on the specifics.
True on the fords although I don't recall being scared by it . Then again, it didn't look like a sheared pin either

The fact that more than 1 have been found to no ill effects sort of points that way. I think it may be more common than realized.

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