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Old 08-24-2015, 10:59 AM
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Metal shavings in tranny pan......

My recently purchased '08 JKUR had the transmission replaced with a Jasper rebuilt tranny about 10k miles before I bought it. Since buying the Jeep, I've been going through my usual routine of replacing all the fluids, etc. After dropping the tranny pan and draining the fluid, I noticed more metal in the bottom of the pan than I'm comfortable with. The magnet had some very fine metallic debris stuck to it, but the majority of the metal was loose in the pan. I haven't taken apart the filter yet to inspect for more metal. The fluid looked good, not burnt or dark and the tranny shifts and drives just fine. Is this a sign of more serious problems down the road or is this typical of a tranny that's been rebuilt after a break-in period?

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Old 08-24-2015, 12:06 PM   #2
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If it shifts fine & everything seems to function normal I wouldn't worry about it, there is nothing you can do about it anyways. Clean the pan, change the filter, fill with new fluid & live life.

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Old 08-24-2015, 02:14 PM   #3
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More normal than not. Flush, fluid and new filter you should be fine.
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Old 08-24-2015, 07:51 PM   #4
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Hmmm. Why was the tranny replaced after such a short period? Anyhoo, that would bother me. I rebuilt my Durango 46RE valve body at 140,000 and all I had in my pan was powdery graphite like stuff from the bands. Personally, I would change the filter, fresh fluid,and do the whole thing again in 1-2k. If it is clean then then it is probably just a poor rebuild. If you have the same crap then I would start saving.
Just my 2c.
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Old 08-24-2015, 09:34 PM
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It's still under warranty from Jasper, the company that rebuilt it, so I'm wondering if it's premature to make a warranty claim. As to why the original factory tranny failed at 60,xxx miles, I have no idea. All I know is that I considered the rebuilt tranny only 10k miles ago as a big plus when I boght the jeep, but now I question that wisdom. I'm going to pull apart the filter and hope I do not find more metal......
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Old 08-25-2015, 09:25 AM   #6
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I would be sending pictures of this and 1/2 the filter to Jasper. Is jasper a local company to you?
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Old 08-25-2015, 01:32 PM   #7
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It's still under warranty from Jasper, the company that rebuilt it, so I'm wondering if it's premature to make a warranty claim. As to why the original factory tranny failed at 60,xxx miles, I have no idea. All I know is that I considered the rebuilt tranny only 10k miles ago as a big plus when I boght the jeep, but now I question that wisdom. I'm going to pull apart the filter and hope I do not find more metal......
I've seen transmissions in other vehicles look like that and there were never any issues. However, I do think it's a good idea to document it and contact Jasper. They might even consider doing a replacement. Even if they indicate it doesn't warrant a replacement trans., at least if there's a problem down the road you'll most likely be covered.
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Old 08-25-2015, 01:49 PM   #8
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Did the person who installed the replacement transmission flush the lines and flush or replace the transmission cooler?
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Old 08-25-2015, 03:30 PM
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Did the person who installed the replacement transmission flush the lines and flush or replace the transmission cooler?
I would assume so, as that's the prudent thing to do, but I can't be certain. Even if I were to figure out where the work was done, of course their answer to the question will be what you'd expect, that they always flush the lines and cooler. Who wouldn't do the easy part of a tranny swap??? Don't answer that......rhetorical.
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Old 08-25-2015, 03:50 PM   #10
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I would assume so, as that's the prudent thing to do, but I can't be certain. Even if I were to figure out where the work was done, of course their answer to the question will be what you'd expect, that they always flush the lines and cooler. Who wouldn't do the easy part of a tranny swap??? Don't answer that......rhetorical.
That could be the problem. One would hope the job was done right, but you know how that goes.
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Old 08-31-2015, 10:31 AM
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I finally had the chance to break open the transmission filter and have a look at what's inside. More metal, no surprise there. I also collected all the metal particles and washed them with MEK to rinse the ATF off. It appears it's almost all aluminum since it is not attracted to a magnet. That would explain why the magnet in the pan was almost free of debris, with very little metal "fuzz" on it. So, where is aluminum likely to be coming from in a rebuilt tranny with 10k miles on it? The black specs are pieces of plastic from cutting open the filter. On the work order from the shop that installs the new tranny it was indicated that the tranny cooler and lines were flushed prior to install of the new tranny. Whether this was actually done is, as always, anyone's guess. I'm going to contact Jasper, the company that sold the rebuilt tranny, to investigate a warranty claim. I just wanted as many experienced opinions as possible from experienced wrenches here about how abnormal this is and what's likely going on inside my tranny that shows no symptoms of anything wrong so far....
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Old 08-31-2015, 10:34 AM
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Obviously lots of fine aluminum dust in the remnants of the fluid from the pan....
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Old 08-31-2015, 12:33 PM   #13
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yea that is not normal, and the filter should have cleaned that all out.

as far as your aluminum question, I am pretty sure the only aluminum should be the case itself.
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Old 09-01-2015, 06:41 AM   #14
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Aluminum is most likely from the torque converter internals. I would notify Jasper and inform them. When metal is present the magnet test checks for ferrous metals which are typically shed from the transmission itself, the aluminum comes from the torque converter. That's a quick test they'll do when they see excess metal shavings during a pan drop.
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Old 09-01-2015, 08:28 AM
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Aluminum is most likely from the torque converter internals. I would notify Jasper and inform them. When metal is present the magnet test checks for ferrous metals which are typically shed from the transmission itself, the aluminum comes from the torque converter. That's a quick test they'll do when they see excess metal shavings during a pan drop.
Thanks for the helpful info. The more I know before I contact them the less likely it is they will be able to brush it off and BS me to avoid a warranty claim by calling it normal.
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Old 09-01-2015, 08:44 AM   #16
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Thanks for the helpful info. The more I know before I contact them the less likely it is they will be able to brush it off and BS me to avoid a warranty claim by calling it normal.

No problem, your pictures will be helpful too. PM me if you'd like and we can talk more about it off line.
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Old 09-01-2015, 11:04 AM   #17
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I would guess that is from the torque converter too. It should have been replaced with the new trans but was it? I had a torque converter go and barf metal into the trans like that. Unfortunately the damage is done and your trans is not long for this world. Does your trans howl a little when it is in park or nuetral?

Is the trans warranty transferable? I am not sure how that works in the US but here it would not be. The warranty would only be for the original purchaser on most stuff unless it was done by the dealer.

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