30k mile service for 4.0L I6 - JeepForum.com

 
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post #1 of 10 Old 10-13-2005, 09:37 PM Thread Starter
JCDubya
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30k mile service for 4.0L I6

I'm about due for my 30K mile service. I have a couple questions. One of the things listed is tranny fluid change, internal filter, and adjust bands. Is it hard to "adjust the bands"?

It also lists spark plugs, should I just go with mopar, or aftermarket?

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post #2 of 10 Old 10-15-2005, 11:41 PM Thread Starter
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nobody?
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post #3 of 10 Old 10-16-2005, 02:52 AM
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As far as spark plugs go I use the recommended Champions, but I generaly don't change mine until about 70,000.

I can't tell you anything about the trans adjustment as I have never tried it. I took mine to the dealer for the trans service.

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post #4 of 10 Old 10-16-2005, 08:06 AM
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Band adjustment is not hard. Get a Haynes manual and it details all you need to know. If you do it yourself you will need a Torque wrench. I mention that because everything else isn't all that abnormal, but the torque wrench isn't something everyone has.

At 30K I would change the fluids in both differentials as well. For plugs, and we had a thread on this a few months back. I recommend Champion truck plugs. They are not platinum, but they are heavy duty and work great in all vehicles I've run them in. Don't do the multi-tip things, they don't make a noticable difference and cost a lot.

Sorry I didn't post earlier, I overlooked it.

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post #5 of 10 Old 10-16-2005, 08:53 AM Thread Starter
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I checked my FSM CD, (why do I always forget about that thing?). It doesn't seem hard at all. Basically just torque it down to spec, then back it off X amount of turns? I just wasn't sure if it was harder or more involved than it seemed. I do have a torque wrench, Craftsman Digitork, and it sure got a workout yesterday!

It looks as though the 4.0L oil pan gasket is reusable. Is this the case, or should I put a new one on anyway? To drop the pan, does anything else have to be removed first? I keep forgetting to take notice when I'm under the thing...

For the spark plugs, it looks like NGKs are what's in it now. Should I just keep using those? Here

Last edited by JCDubya; 10-16-2005 at 09:10 AM.
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post #6 of 10 Old 10-16-2005, 09:24 AM
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2004 maybe doesn't need band adjustments, my 2000 doesn't, according to Haynes. I've reused the mopar gaskets, I know they work. Yours may not have come with one from the factory. Mine had the cork, but use the reusable, saves alot of scraping. Again, I'm basing this on my 2000. Please do yourself a favor and keep up with the tranny fluid intervals, they really like the fluid changes.

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post #7 of 10 Old 10-16-2005, 09:24 AM
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Don't reuse gaskets. Bad idea altogether. Don't pull the oil pan either otherwise you'll be doing more work than you have to. Pull the transmission pan instead. This is very messy. When you buy the tranny filter the gasket should be included with the kit.

If your plugs need changing, I'd go with the truck plugs. But that's just me.

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post #8 of 10 Old 10-16-2005, 09:34 AM
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The Mopar gasket is separate and thats what I recommend(not cork). By the way I highly recommend Mopar fluid. Too many questions about compatibility with the others. I spent about $50 at my dealer for 6 qts fluid, filter and reusable gasket. I know everyone wants to save, but this is one area I think it's money well spent. And I just assumed he meant the tranny oil pan,(Ihope).

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post #9 of 10 Old 10-16-2005, 09:38 AM Thread Starter
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Quote:
Originally Posted by ksgrands
The Mopar gasket is separate and thats what I recommend(not cork). By the way I highly recommend Mopar fluid. Too many questions about compatibility with the others. I spent about $50 at my dealer for 6 qts fluid, filter and reusable gasket. I know everyone wants to save, but this is one area I think it's money well spent. And I just assumed he meant the tranny oil pan,(Ihope).
Yes, that's what I meant. I'm still getting used to this whole automatic thing

just an FYI, my 2004 FSM recommends the tranny bands be adjusted every 30K miles. I just had my tranny rebuilt at 20K, so I'll probably wait another 10K before I do the tranny service.
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post #10 of 10 Old 10-16-2005, 11:18 AM
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I need to get one of those FSM's.

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