Transmission r&r hints or FAQ? - Jeep Wrangler Forum
Jeep Wrangler Forum

Go Back   Jeep Wrangler Forum > TJ Jeep Wrangler Forum > TJ Tech Forum

Join Wrangler Forum Today


Reply
 
Thread Tools

Please support our sponsors and let them know you heard about them on WranglerForum.com
Old 07-29-2008, 06:59 PM   #1
Jeeper
 
Join Date: Jul 2008
Posts: 40
Transmission r&r hints or FAQ?

My lovely new-to-me 1998 Wrangler apparently has a dying automatic transmission (which I specifically had inspected before I bought it last week and was told it was "fine"). We've ordered a reasonable-quality rebuilt transmission (I think the reman company is Shift Dynamics). Now we get to yank the old one and put the "new" one in. Oh, boy.

I searched and couldn't find a FAQ or "here's how I did it" page on the 'net. The factory manual is coming next week (hopefully before the transmission), but has anyone been through this process? Any good hints/tips?

The spouse is a fairly experienced backyard auto mechanic - he has kept my various BMWs, 3 Fiat Spiders, a '76 Porsche 911 and my current Mini Cooper S with all the mods running nicely, so he's mechanically inclined and has just about every "normal" automotive tool and a bunch of specialty (probably metric) ones.

Yes, yes, don't buy cars when the smarter/more talented car person is out of town. Don't rub it in. And I was so proud of myself for getting such a "good deal."

__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Old 07-29-2008, 07:47 PM   #2
Jeeper
 
Rawkon's Avatar
 
Join Date: Apr 2005
Location: fullerton/big bear
Posts: 2,061
Send a message via AIM to Rawkon Send a message via MSN to Rawkon
i have the same auto and so far has been pretty tough for me. what symptoms are you having to know its on its way out? the Factory service manuel you have coming is gonna be the best thing he will have to replace the trans. mine has tons of pictures and info. waaaaaay more then a standard chiltons or haynes.

Rawkon is offline   Quote Quick Reply
Old 07-29-2008, 07:59 PM   #3
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
r & r is fairly simple on that. it won't be hard for a mechanical person, and if he's kept a fiat running, he won't have a problem removing a rear wheel drive transmission. there's really no tricks, cuz you don't need any. good luck
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 07-29-2008, 08:10 PM   #4
Jeeper
 
Join Date: Jul 2008
Posts: 40
Quote:
Originally Posted by Rawkon View Post
i have the same auto and so far has been pretty tough for me. what symptoms are you having to know its on its way out? the Factory service manuel you have coming is gonna be the best thing he will have to replace the trans. mine has tons of pictures and info. waaaaaay more then a standard chiltons or haynes.
My experience with factory manuals has been that, were I an auto tech in a huge shop with a mechanical overhead lift, the advice on how to get things in and out would probably be pretty good (especially if I was being paid by the hour). However, once you've done something a couple times, you develop a feel for what REALLY has to be done and the best way to do it. For instance, I can get the starter out and BACK IN a Fiat Spider in about 20 minutes, using several jacks and a prybar to hold other parts up and out of the way and not taking off some parts that the manual says I have to. The factory manual method took me more than an hour to get it back in, with skinned knuckles and much swearing. (I do not like working on cars, I like driving them, I only work on them when the spouse says he's too busy. Although, when he hears me swearing he often takes over.)

The many ways I know my transmission is soon-to-be-junk? Let me count them. First: the transmission often hunts back and forth between 1st and 2nd, especially under light load. Second: It makes a lot of bearing noise in first gear (actually, it sounds like a couple ball bearings in a coffee can when you use a stethoscope to listen). Third: it has to think about 5 seconds when you put it in reverse. I think it's trying to remember where it put reverse last. Fourth: the transmission shift indicator is more of a general idea of what gear you've put it in than an absolute indicator. It could say "D" for drive. It could say "2". The way I know that it's in drive is I push the button in to take it out of park, then let the button out. It will pass reverse and neutral and settle into drive on its own, even if the indicator says it's not in the right gear.

The cable has been adjusted, the fluids checked.

This is an ex-transmission. It will be pushing up the daisies.
__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Old 07-29-2008, 08:48 PM   #5
Jeeper
 
Rawkon's Avatar
 
Join Date: Apr 2005
Location: fullerton/big bear
Posts: 2,061
Send a message via AIM to Rawkon Send a message via MSN to Rawkon
i had some of those same symptoms and i had a bucking under heavy load. I flushed everything and used new filters and synthetic and tada all my trans problems where cured, and have been for the last 15k miles.

jerry bransford just installed a auto trans in his jeep hopefully he sees this thread and can help.
Rawkon is offline   Quote Quick Reply
Old 07-29-2008, 08:58 PM   #6
Hacks off Parts while Lit
 
whitebuffalo's Avatar
 
Join Date: May 2005
Location: The Sandhills of South Texas
Posts: 2,290
biggest tip i can offer is buy some all thread and cut it into at least 3 pieces that are maybe 6 inches long. when you go to reinstall the tranny, thread those pieces into the block to use as a jig to line up the new trans. also, make sure, then make damn sure that the torque converter is ALL THE WAY on th input shaft. i learned both of these tips the hard way (not on a jeep )

if the trans is roasted, make sure to blow out the lines for the tranny cooler, as it could have some shrapnel in there......
__________________
'90 YJ, ford 8.8, SOA, lincoln front, aussie rear, 4.88s, swampers.
whitebuffalo is offline   Quote Quick Reply
Old 07-30-2008, 08:45 AM   #7
Jeeper
 
Join Date: Jul 2008
Posts: 298
My XJ used two reverse torx bolts on the very top of the transmission that you can't see. The rest were standard bolts. I haven't looked at my TJ, but I would suspect it's the same, so be prepared, otherwise you'll strip them out. Aside from that, it helps to have about three feet of extensions for your impact wrench.
ChrisTX is offline   Quote Quick Reply
Old 07-30-2008, 09:57 AM   #8
Jeeper
 
Join Date: Jul 2008
Posts: 40
Ah, very useful hints, thanks, guys!

After leaning on the (used car) dealer I bought it from, not a week ago, he's paying $500 toward the $800 rebuilt transmission. Still leaves us doing the work, but it's better than nothing.
__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Old 08-01-2008, 03:31 PM   #9
Jeeper
 
Join Date: Jul 2008
Posts: 40
And while I'm on the subject - my '93 Cherokee had a transmission with an overdrive. I'd like to get overdrive into the Wrangler for highway driving, although I'm sure there is an ECU/ECM issue with such a swap.

Anyone seen this done?
__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Old 08-01-2008, 04:03 PM   #10
Jeeper
 
Join Date: Jul 2008
Posts: 298
You mean an electronically controlled AW4 from an XJ?

http://www.stu-offroad.com/engine/aw4/index.htm
http://www.stu-offroad.com/engine/aw-4/aw-4-1.htm

Not even worth it if you have a 32RH already.
ChrisTX is offline   Quote Quick Reply
Old 08-01-2008, 04:31 PM   #11
Jeeper
 
jpdocdave's Avatar
 
Join Date: Mar 2008
Location: beach park, il
Posts: 8,162
Images: 7
the xj trans is a horse. never seen them go bad, a good friend of mine works for jeep, he's seen only 1 go bad in 10 yrs. its a toyota trans (basically).

never heard of people swapping it into wranglers but it might be a good choice.
__________________
"The danger to America is not Barack Obama but a citizenry capable of entrusting a man like him with the Presidency. It will be far easier to limit and undo the follies of an Obama presidency than to restore the necessary common sense and good judgment to a depraved electorate willing to have such a man for their president."
http://mybroadband.co.za/photos/data...re_cowbell.gif
jpdocdave is offline   Quote Quick Reply
Old 08-01-2008, 04:39 PM   #12
Jeeper
 
Join Date: Jul 2008
Posts: 40
From the link that ChrisTX posted and two others I found, the problem is that the XJ trans is too long. While we have a mill and a lathe, the idea of chucking massive transmission parts up there and milling bits off (on an experimental basis) is not all that attractive.

EDIT: ...and so much for the Shift Dynamics rebuild - they don't have the right core. The car dealer is now saying that we should get a rebuild through Schuck's. I'm sorry, but my teenager worked for Schuck's once and the only thing I'd buy there is a case of oil in a sealed box. On sale. Now to find another rebuilt transmission. I like the sound of the Jasper rebuild, but they don't sell to private parties, and the local Jasper partner wants $700 to put it in. Of course, through them I don't have to hassle with a core and two-way shipping....
__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Old 08-01-2008, 05:25 PM   #13
Knows a couple things...

WF Supporting Member
 
Jerry Bransford's Avatar
 
Join Date: Nov 2005
Location: Escondido, Calif.
Posts: 31,368
Images: 2
Quote:
Originally Posted by MoSo View Post
From the link that ChrisTX posted and two others I found, the problem is that the XJ trans is too long. While we have a mill and a lathe, the idea of chucking massive transmission parts up there and milling bits off (on an experimental basis) is not all that attractive.
There are enough AW4 transmissions (the one used in the XJ) installed into TJs that what you're worried about is not an issue. You don't "chuck massive parts" or need to mill parts off to install the AW4 tranny that comes out of an XJ.

Here are just a couple writeups from TJ owners who installed that exact transmission into their TJ.

http://www.stu-offroad.com/engine/aw-4/aw-4-1.htm
http://www.stu-offroad.com/engine/aw4/intro.htm
__________________
When you have a choice, buy American.

Jerry Bransford is offline   Quote Quick Reply
Old 08-11-2008, 07:28 PM   #14
Jeeper
 
Join Date: Jul 2008
Posts: 40
Well, the transmission is out, and the spouse has the following hints and comments:

Although the factory manual tells you not to, take the transmission support plate off very early in the process. Otherwise it's a pain to work around.

All of the strange little shift linkage connectors pop off with great difficulty - they have to be pried on hard or pressed from behind with a pair of pliers.

Quite a few of the electrical connections have a little red locking tab that has to be pulled out before the connector can be undone. Use a small screwdriver and a pair of pliers.

Leave the transfer case on and remove it as a unit with the transmission; not before, as the manual tells you.

The transfer case shift linkage has a bulkhead mounted bearing that is screwed to the transmission hump under the carpet inside the car tub. The manual says nothing about it.

The transmission cooler lines - the return line has a plastic clip that you squeeze with a pair of pliers while wiggling the tube. The other requires a 19mm wrench.

It's a one-person job until you get to the point of removing the flex plate bolts and then someone to hold the nose of the engine (19mm socket and breaker bar against the harmonic balancer) still while you break the flex plate bolts (hammer on a box wrench). Then two people underneath while you block up the back of the engine with wood blocks, put a floor jack under the transmission pan, remove the bellhousing bolts with a wobble socket and slide the transmission out.

The drive shaft has 8mm bolts which appear to be lock-tited and were hard to get off. Annoying and slow to get out. Not sure if it's factory lock-tite or if the drive shafts have been out before. For the rear drive shaft you have to cut the clamp on the seal boot.

Hardest thing to break loose? Bellhousing bolt that hold transmission filler tube and case vent. Hard to get to, there's a nut on the motor side and bolt head on the other side.

Total time: about 3 hours, taking it slow, cleaning bits off, stopping for lunch and a beer afterward. All tools used were metric.

These refer to the 32RH automatic transmission for the 1998 4.0l motor.
__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Old 09-06-2008, 10:45 AM   #15
Jeeper
 
Join Date: Jul 2008
Posts: 40
So the transmission came out, went off to be rebuilt. Took about a week. Re-install took about an hour and a half and went smoothly (don't forget to put a flex plate bolt in the torque converter as soon as the bell housing is mated up).

Started up, ran fine for about 2 days and developed a massive leak

Took it back to the rebuild place (the whole car, we did NOT remove the transmission) who replaced the o-ring seal for the electrical connection -- and no leak! No charge for the repair, either.

Yay!

I picked up a book on "Oregon Byways" and we've done a couple of them - not exactly difficult jeep trails (from a "technical" standpoint) but gorgeous stuff!

__________________
~ ~ from beautiful Fort Klamath, just s. of Crater Lake, Oregon.
1998 Jeep Wrangler Sport, straight 6, auto.
2004 Jeep Grand Cherokee "Columbia edition" 4.7L V8, auto.
2006 Mini Cooper S, supercharged ball of pure fun, 6 spd.
MoSo is offline   Quote Quick Reply
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Jeep Wrangler Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Wrong manual transmission fluid listed in computer scotiez TJ Tech Forum 6 11-03-2012 09:03 PM
clicking and clacking transmission, stuck in reverse, shifter feels like neutral redhead_yooper YJ Tech Forum 4 01-14-2011 08:16 PM
clacking in transmission stuck in reverse feels like neutral redhead_yooper YJ Tech Forum 6 12-20-2009 09:18 AM
Clutch? Transmission? Some advice needed ryobi YJ Tech Forum 4 10-10-2007 09:33 AM
tow bar for 2007 Wrangler X douglassoilco JK General Discussion Forum 5 09-07-2007 11:35 PM



» Network Links
»Jeep Parts
» Featured Product

All times are GMT -5. The time now is 07:31 PM.



Jeep®, Wrangler, Liberty, Wagoneer, Cherokee, and Grand Cherokee are copyrighted and trademarked to Chrysler Motors LLC.
Wranglerforum.com is not in any way associated with the Chrysler Motors LLC