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Unread 09-24-2009, 12:26 AM   #1
my2monkeys
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Fluid change on 42re-filter gets replaced?

Do you guys drop the pan and filter during routing service? This is my wifes 95 zj, it doesn't have a drain plug like my 89 xj aw4. So I usually just suck it out thru dipstick tube. But I'm thinking I probably should drop pan and inspect,it's got 160,000mi on it. And what about band adjustment? Any info would help.

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Unread 09-24-2009, 12:54 AM   #2
the88thpianoman
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AFAIK, a band adjustment is only necessary if you are having symptoms, slipping, etc. If it is shifting fine, the bands are fine. If you're going to drop the pan and replace the filter (which never hurts), it'll be quite messy the first time, but not after that if you install a drain plug kit. I highly recommend doing this.
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Unread 09-24-2009, 01:05 AM   #3
sandman
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yea drop the pan, check the magnet for metal pieces and change the filter.
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Unread 09-24-2009, 06:36 AM   #4
greasefingers
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I would recommend draining and replace the ATF & filter. If you are concerned about replacing even more fluid, since draining only removes about half of the volume, then I would replace the ATF twice over a couple a days. This will replace the fluid by dilution. Not the best way but not too bad either. Removing the tranny pan also reveals how much metal has worn away and you get to clean the magnet, and you can replace the filter.
A T25 Torx Hex wrench/bit is needed for the filter removal (at least for ZJs)

If I am using a cork or rubber gasket I do not RTV on it because I install the bolts with a torque wrench (150 in-lbs) But many people use a small bead on the pan side only. Currently I am using a ridge type rubber encapsulate metal gasket. This can be removed and reused a couple times, so never use RTV on this type.

WalMart sells Mopar +4 AFT for $ 4.42/qt

The tranz filter at the dealer is about $ 6
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Unread 09-24-2009, 08:10 AM   #5
gomes512
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I'd change the filter also and continue doing fluid changes the way you have done if you don't want to install a plug.

New fliter and clean the mags and button it up for another 160K
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Unread 09-24-2009, 08:23 AM   #6
ratmonkey
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Adjust the bands at every service. They're a wear part.
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Unread 09-24-2009, 01:32 PM   #7
4Slow9erHybrid
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Quote:
Originally Posted by ratmonkey View Post
Adjust the bands at every service. They're a wear part.
You seem to know about these trannys. The 97 and 98 FSM tells me to back out the adjuster screw for the front band 3-5/8 turns for 42RE and 2-1/4 turns for 44RE. The 96 FSM on the other hand says 2-7/8 turns for both 42 and 44RE.
The numbers for the rear band are 4 turns (97, 98) and 2 turns (96) for both 42/44RE.

Has Chrysler modified these trannies in 97 and hence the different adjustments? Or they simply revised the adjustment numbers in 97?

I adjusted mine yesterday to 3-5/8 turns (front). Haven't tested it yet as my Jeep is undergoing a major overhaul (still in pieces).

Thanks
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Unread 09-25-2009, 03:19 AM   #8
ratmonkey
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There are some modified numbers out there from a few tranny rebuilders that allow for better shifting timings. But following the fsm for each year is correct.

Chrysler changed valve bodies and thus shift parameters nearly every year in these units.
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Unread 09-25-2009, 08:29 AM   #9
4Slow9erHybrid
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Quote:
Originally Posted by ratmonkey View Post
There are some modified numbers out there from a few tranny rebuilders that allow for better shifting timings. But following the fsm for each year is correct.

Chrysler changed valve bodies and thus shift parameters nearly every year in these units.
Thanks for the info.
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