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post #1 of 12 Old 11-01-2007, 03:45 PM Thread Starter
staggwj
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Transmission Cooler

Hey guys, I started offroading with my '99 WJ with 98k on the odometer, I bought a 10,000 lb. Transmission cooler just for safe measures when my engine is working hard on the trails. I was wondering if anyone installed a cooler and if they had any pictures or ideas of where the ideal spot to mount it was?

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post #2 of 12 Old 11-01-2007, 03:55 PM
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Quote:
Originally Posted by staggwj
Hey guys, I started offroading with my '99 WJ with 98k on the odometer, I bought a 10,000 lb. Transmission cooler just for safe measures when my engine is working hard on the trails. I was wondering if anyone installed a cooler and if they had any pictures or ideas of where the ideal spot to mount it was?
on the front of the radiator/condensor.

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post #3 of 12 Old 11-02-2007, 01:36 PM Thread Starter
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Ok, well when Im at the front of my jeep the transmission line should be on the right side of the radiator on the engine side, do I need anything special to get this line off? any special tool?
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post #4 of 12 Old 11-02-2007, 03:27 PM
indept
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WOW a 10000 lb. cooler, how do you lift it sorry couldn't resist

You are probably better off cutting the line with a tubing cutter and fasten more line of the same size using a compression union and make lines to go up to your cooler. You will have to buy steel line and bend it using a tubing bender. As far as i'm concerned the less rubber hose you use the better off you are because rubber hose will eventually rupture as it gets older & brittle. Does your cooler have flare fittings or is it set up for hose? Mine was a hose type fitting so I bent hardline up to it as close as I could and finished off with short pieces of rubber hose. I left the radiator in the loop. I set mine up so it runs through the radiator first, then to the cooler then back to the tranny. If you want to figure out which line comes from the tranny and which is the return, when everything is cold get a helper, start it up and put it in gear (preferrably reverse since you'll be laying under it and you don't want to get run over) you get under while the helper has it in gear and holding the brake. Feel the two lines, the feed line from the tranny will get hot real quick. You MUST have it in gear to do this because it won't get hot very quickly in park or neutral. It's the torque convertor slip that builds up the heat. Good luck
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post #5 of 12 Old 11-02-2007, 08:35 PM
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that made no sense...cutting the cooler hard lines???? I am curious though...you said on the right side...meaning the drivers side???Mine was on the left or passenger side. I changed out the radiator at the same time to when I installed mine. The ends of the hard lines are flared and the nut that is on there just unscrews. You may need to use the added hose sice the newer cooler will be bigger than stock (wait...did you have one already...I did). You will loose a little tranny fluid so have some on hand to refill or just pinch off the rubber line. Easy.

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post #6 of 12 Old 11-03-2007, 06:43 AM
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When I installed mine I just pulled the rubber line off the hard return at the rad, ran the hose around to the cooler, ran the cooler return back to the tranny return and coupled those hoses with a hose union.

If you have the 4.7L with the 45rfe then the line going to the bottom of the tranny is the return. Just use pliers to undo the hose clamp.
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post #7 of 12 Old 11-03-2007, 07:19 AM Thread Starter
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I have the I6 and yes, I meant drivers side. I dont have the tow package, so I dont have another tranny cooler, but I'm kind of making my own tow package by doing this, I feel like I should run radiator then cooler then trans? Im just planning on using the rubber lines, Im replacing the older ones along with installing the cooler. JG Canuck-there is no hose clamp on my it's metal tubing that goes into the hose on the radiator end. So radiator hard return to cooler then cooler send to trans? Yay? Nay?
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post #8 of 12 Old 11-03-2007, 08:15 AM
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sorry...wish I was more help that that....mine had one so it was a simple swap...not sure about yours...I do like the first post about bending your own tube and running them and so forth. Maybe shoot him a pm and ask more q's?

96' JGC V-8 5.2L ltd.
way too much to list.
Thought for the day:
If GOD gave HIS only son for us...can't we at least give HIM an hour of our time a day.


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post #9 of 12 Old 11-03-2007, 09:50 AM Thread Starter
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Yeah, well I dont think Im that able to bend metal ha, I just learned how to put on new rotors and pads last week, I don't want to ruin piping haha that might cause more problems for me. Thanks for the advice though I appreciate it from everyone, I think I'm just going to use rubber tubing and go radiator hard return to cooler then to the trans it is. Maybe Ill get a digital camera and a pic of the hard return to see if anyone could tell me if this the right route to go.
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post #10 of 12 Old 11-03-2007, 10:56 AM
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what ever makes you feel more comfortable....but the do sell tube benders for applications just like this...or brake lines as well. As for you...I too am uncomfortable doing some things by myself if I have never done it.

96' JGC V-8 5.2L ltd.
way too much to list.
Thought for the day:
If GOD gave HIS only son for us...can't we at least give HIM an hour of our time a day.


http://photobucket.com/albums/v639/nashmd454

http://groups.jeepforum.com/The_Dark_Side
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post #11 of 12 Old 11-03-2007, 03:50 PM
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Yeah mine had no aux cooler orginally, though it did have an aftermarket hitch. I swapped to a factory hitch and added the cooler.

You want the aux cooler in the return line (i.e. after the cooler in the rad.) On mine, the return to the tranny had a hose that attached to the hard pipe coming out of the rad so I simply pulled that apart and plumbed my cooler in.

There is no problem using hose, just make sure you use the right kind (if you don't have enough in the tranny cooler kit go to the auto parts store an get some power steering hose it's the same stuff). Don't use fuel or vacuum hose.

I used fuel line hose clamps on mine. They dont pinch the hose like the ordinary gear type hose clamps do.
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post #12 of 12 Old 11-03-2007, 03:57 PM
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I added a cooler to mine, put it on the drivers side as far to the outside edge of the ac condensor as I could get it. Ran new trans line from teh radiator cooler toteh new cooler and then fromthe new cooler to teh trans return. I also added a trans filter at the same time. Added filtration.

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