help with transmission cooler install.
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Freshman User
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help with transmission cooler install.
I have a 02 f350 w/ 4.10 gears in it that i pull a 12,000# toy hauler in Arizona with , and while towing the trans temp goes to 195 and will stay there until I start pulling a hill then the temp goes up to about 210 until back to flat ground. I am interested in installing the tru-cool 4379 cooler. If someone could please help me with this install. When installing the 4379 do you disconect the oem trams cooler and just install the tru-cool in its place, or do I have to put the oem cooler in line with the tru-cool . I do have a tras temp gauge so i know the temp are correct. All the help I could on this would be appreciated, including pictures of the install that anyone has done. I did do a search on trans coolers but did not get exactly what I was looking for.
Logistics Pro
Joined: Jun 2005
Posts: 4,243
Likes: 16
From: AZ
I did the same install two weeks ago (along with an external transmission filter). I took the line coming from the oil-to-water (OTW) cooler on my truck and ran that into the new oil-to-air (OTA) cooler, then ran the outlet of the new cooler into the transmission. My reasoning went as follows...oil drops some heat in the first cooler (OTW) and then is really cooled down in the second OTA cooler. I haven't seen temperatures above 150 since pulling a 35' 5er or my 11.5' TC in temperatures exceeding 100!...good luck on the install - it is very easy and I know you will be happy with the temperatures you see after the install.
Lead Driver
Joined: Jun 2003
Posts: 8,298
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From: Damon (South East Texas)
just2dune,
Your '02 should have an oil-to-water and an oil-to-air cooler. There is a short section of hose (bottom right side of radiator) in the cooler line from the OTA cooler to the trans oil return line. Install the hoses from the TruCool in place of this hose. This will give you the benefit of all three coolers. This is how I did it on my '01 F250. There are 2 upright plastic bars behind the grille that will line up with hole in upper ears of the TruCool. You can drill holes in the bars and bolt it up with 1/4" bolts. I used zip ties to secure the bottom ears. The holes wouldn't line up.
Your '02 should have an oil-to-water and an oil-to-air cooler. There is a short section of hose (bottom right side of radiator) in the cooler line from the OTA cooler to the trans oil return line. Install the hoses from the TruCool in place of this hose. This will give you the benefit of all three coolers. This is how I did it on my '01 F250. There are 2 upright plastic bars behind the grille that will line up with hole in upper ears of the TruCool. You can drill holes in the bars and bolt it up with 1/4" bolts. I used zip ties to secure the bottom ears. The holes wouldn't line up.
Postmaster
Joined: Nov 2004
Posts: 2,854
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From: New Hampshire
Originally Posted by mueckster
just2dune,
Your '02 should have an oil-to-water and an oil-to-air cooler. There is a short section of hose (bottom right side of radiator) in the cooler line from the OTA cooler to the trans oil return line. Install the hoses from the TruCool in place of this hose. This will give you the benefit of all three coolers. This is how I did it on my '01 F250. There are 2 upright plastic bars behind the grille that will line up with hole in upper ears of the TruCool. You can drill holes in the bars and bolt it up with 1/4" bolts. I used zip ties to secure the bottom ears. The holes wouldn't line up.
Your '02 should have an oil-to-water and an oil-to-air cooler. There is a short section of hose (bottom right side of radiator) in the cooler line from the OTA cooler to the trans oil return line. Install the hoses from the TruCool in place of this hose. This will give you the benefit of all three coolers. This is how I did it on my '01 F250. There are 2 upright plastic bars behind the grille that will line up with hole in upper ears of the TruCool. You can drill holes in the bars and bolt it up with 1/4" bolts. I used zip ties to secure the bottom ears. The holes wouldn't line up.
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Freshman User
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Hey mueckster, are you refering to the radiator as the water-to-oil cooler. I am under the impression from what you are saying in your post about hooking up the trans cooler into the short section of hose in the cooler line from the OTA cooler to the trans oil return line that you just take this line and run to the new cooler and out of the new cooler back into this short section of hose. basically you just run the new cooler inline with this short section of hose. thank again
Fleet Mechanic
Joined: Aug 2003
Posts: 1,772
Likes: 95
From: Phoenix, AZ
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Freshman User
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heatstroked, where did you get the hard lines to install it and also which tru-cool did you use. I have no looked har enoutg at mine is that the stock location.
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Fleet Mechanic
Joined: Aug 2003
Posts: 1,772
Likes: 95
From: Phoenix, AZ
Originally Posted by just2dune
heatstroked, where did you get the hard lines to install it and also which tru-cool did you use. I have no looked har enoutg at mine is that the stock location.
Had the hard lines bent on site at time of installation.
This is not the stock location. Had to drill the plastic verticals and fabricate a cross bracket.
I believe the stock cooler sits between the radiator and the intercooler
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From: 3rd Rock
Originally Posted by Ramrod48
yea , I allways tee my AUX. cooler in line with the factory RAD. cooler , if you keep your TRanny temp to 170 degree MAX , your tranny will last a LOT LONGER !!!!!!
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