In an attempt to fix my leaking transmission cooler line I found a few at the wrecking yard. Of course the one with one good top end had a bad lower end and vise versa. So basically I am taking both and splicing together with high temp rubber hose and clamps.
I attempted to flare each end of the metal lines, but it was a PITA to slip over and cut the hell out of the inside of the rubber line and after install started to leak again.
I got some new hose and new heavy duty clamps. Should I bother with the flare or just run it without? What are people doing with the after market tranny cooler lines?
For a little more detail its the top metal tranny cooler line off the radiator.
Oh, and I got the fitting aparts near the harmonic balancer and it seemed to go in pretty easy too, too easy.... Does this sound like a potential problem?
I attempted to flare each end of the metal lines, but it was a PITA to slip over and cut the hell out of the inside of the rubber line and after install started to leak again.
I got some new hose and new heavy duty clamps. Should I bother with the flare or just run it without? What are people doing with the after market tranny cooler lines?
For a little more detail its the top metal tranny cooler line off the radiator.
Oh, and I got the fitting aparts near the harmonic balancer and it seemed to go in pretty easy too, too easy.... Does this sound like a potential problem?
Senior Member
yor best bet is to get new lines but if you want to go that route get the brass coouplings flare your lines and put them together just like brakelines but i would recomend getting new because of the pressure in the lines
CF Veteran
I would trim off the flares you already put on and deburr the edges.
Re-flare BUT only enough to give you a little lip.
Keeping the hose from sliding off is what you want.
Slip (2) good hose clamps on each line before fitting hose.
I usually orient them so they are turned in opposite directions
You want a total of 4 per line.
As for the pressure.....
How much do you think is in the lines??
5psi, 10psi, 25psi, 65psi?
I know the answer. I'm just throwing that out as a rhetorical question.
Re-flare BUT only enough to give you a little lip.
Keeping the hose from sliding off is what you want.
Slip (2) good hose clamps on each line before fitting hose.
I usually orient them so they are turned in opposite directions
You want a total of 4 per line.
As for the pressure.....
How much do you think is in the lines??
5psi, 10psi, 25psi, 65psi?
I know the answer. I'm just throwing that out as a rhetorical question.
Senior Member
yes!!! reflare those lines so that there is a lip for the hose clamp to catch on. My friend hacked in a trans cooler on my Grand cherokee and the hose blew off twice!!!!!
leaving for lunch[i worked 3rd shift at the time thus its a night] and luckly my manager was in the parking lot and yelled or i wouldnt have noticed until i was out on the main road wondering why my jeep wont move

Another time I was driving home from work in the morning, and the everything was going fine until i started slowing down, i pushed a little more on the gas pedal only to see the rev's go up the speed go down
bad sign,... Pulled over into a parking lot to find another line he cut he didnt flare and the line had blew off,....
leaving for lunch[i worked 3rd shift at the time thus its a night] and luckly my manager was in the parking lot and yelled or i wouldnt have noticed until i was out on the main road wondering why my jeep wont move

Another time I was driving home from work in the morning, and the everything was going fine until i started slowing down, i pushed a little more on the gas pedal only to see the rev's go up the speed go down
bad sign,... Pulled over into a parking lot to find another line he cut he didnt flare and the line had blew off,....Quote:
Re-flare BUT only enough to give you a little lip.
Keeping the hose from sliding off is what you want.
Slip (2) good hose clamps on each line before fitting hose.
I usually orient them so they are turned in opposite directions
You want a total of 4 per line.
As for the pressure.....
How much do you think is in the lines??
5psi, 10psi, 25psi, 65psi?
I know the answer. I'm just throwing that out as a rhetorical question.
How much pressure is in the line? I just cant figure out why the original tube would keep leaking at the fitting at the radiator. Its supposed to be a compression fitting and no matter how tight it was it would leak.Originally Posted by Howler_GT
I would trim off the flares you already put on and deburr the edges.Re-flare BUT only enough to give you a little lip.
Keeping the hose from sliding off is what you want.
Slip (2) good hose clamps on each line before fitting hose.
I usually orient them so they are turned in opposite directions
You want a total of 4 per line.
As for the pressure.....
How much do you think is in the lines??
5psi, 10psi, 25psi, 65psi?
I know the answer. I'm just throwing that out as a rhetorical question.
Well guys, here is the franken-fitting...
Flared both ends and used high temp hose and 4 clamps 2 of which are the heavy duty stainless steel.
Tranny cooler lines are a hybrid off a comanchee and a ZJ
Spent about $10 for lines, hose, and clamps. After everything was done I called the stealer and it was only $10 for a new line
.
Do you think it will hold? Everything appears to be sealed up and I dont want to remove again as the brass fitting on the radiator is starting to show some wear on both the threads and the end where the line seats.
What do you think?
Flared both ends and used high temp hose and 4 clamps 2 of which are the heavy duty stainless steel.
Tranny cooler lines are a hybrid off a comanchee and a ZJ
Spent about $10 for lines, hose, and clamps. After everything was done I called the stealer and it was only $10 for a new line
.Do you think it will hold? Everything appears to be sealed up and I dont want to remove again as the brass fitting on the radiator is starting to show some wear on both the threads and the end where the line seats.
What do you think?
Quote:
not bad but a constant
Hydraulic hose? Originally Posted by mike37
if you didn't use hydraulic hose it will start to leak after a weeknot bad but a constant
I used high temp / high pressure hose. I tightened the clamps down pretty hard. So you think its going to start to leak again
?I read about a lot of folks installing tranny coolers and not even flaring lines and not having leaks.
CF Veteran
Quote:
I used high temp / high pressure hose. I tightened the clamps down pretty hard. So you think its going to start to leak again
?
I read about a lot of folks installing tranny coolers and not even flaring lines and not having leaks.
tranny fluid is bad on rubber hoses even gas hoseOriginally Posted by 91 Laredo
Hydraulic hose? I used high temp / high pressure hose. I tightened the clamps down pretty hard. So you think its going to start to leak again
?I read about a lot of folks installing tranny coolers and not even flaring lines and not having leaks.
if the stuff you used is designed to holdup to Hydraulic fluid you should be good
whatever you used will work it just wont last as long if its not designed for ATF
[quote=moses;124580]Keep a eye on it and save up for a new " correct line" a tranmission pricey fix!!!