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Old 09-01-2006, 02:24 AM   #1 (permalink)
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Question 47RE cooler line replacement

I am planning on replacing my trans cooler lines with hydrolic lines from the radiator all the way back, but I am having a hard time getting the information to do this. I was wondering if anyone has already done this modification, and if so, what size line do I need for the trans to operate properly , and what are the lenghts for each line, and what fittings do I use for each end of each line? I need as much "specific"/"technical" info as possible. All help is greatly appreciated. Thanks a bunch guys / gals whichever the case may be.
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Old 09-01-2006, 09:21 AM   #2 (permalink)
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I cant help as far as the tech questions you are asking but I did this on my old 2nd gen because the lines cracked on me. What i did was took an old piece of the steel line brought it to a local hydraulic shop and told them i needed the inside diameters to be the same or slightly bigger and needed the male adapters crimped on the ends(even if their hose is bigger they should have male fittings that reduce down to the same thread size as whats in the truck) Im almost certain they screwed right into the the holes and didnt need any bushings or reducers. As far as length i just measured the old lines in the truck and added a few inches because the hyd. hose does not bend as tight as the steel lines. Im sorry i cant get specific for you but if you have a hydraulic shop near by then they outta be able to fix you up. just dont short yourself on the length its easy to tie a little up then try to stretch the hose cause it wont work.

hope that can give you some direction
brad
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Old 10-04-2006, 02:56 PM   #3 (permalink)
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on my 93 i did this also i used a double braid cloth rubber hose aeroquip hydro hose was way to hard to work with you can also look at aeroquip pushlock hose good stuff easy to work with i used 8an or 1/2 is the inch measurement
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Old 10-10-2006, 08:47 PM   #4 (permalink)
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Sorry i took so long to find this thread , i replaced my steel lines with hydraulic lines , and JIC fittings this spring, i will link you to my pictures here:

http://www.dieseltruckresource.com/p...0&ppuser=29143
http://www.dieseltruckresource.com/p...0&ppuser=29143
http://www.dieseltruckresource.com/p...0&ppuser=29143
http://www.dieseltruckresource.com/p...0&ppuser=29143
http://www.dieseltruckresource.com/p...0&ppuser=29143
http://www.dieseltruckresource.com/p...0&ppuser=29143

I retained the origional steel lines where they ran along the engine to the cooler , there is just hose barbs up there , and they were not leaking, i took all my origional lines off , and took them to the hydraulic shop, we set them out on the bench as they would sit on the truck, and made hoses to replace them one at a time, we cut/flared what i re-used of the stock steel line, and put a JIC compression nut on.

I slightly ground out the bell part of the stock clip in fitting , stuck an NPT-JIC adapter in , and brazed it there, you can see it really good in one picture.

If you have any Questions, post here , and i will try to check back , or PM me.

Jayme.
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Dad's 97 2500 2wd slt laramie, star wheel ahead , afc housing slid ahead. otherwise stock... 5 spd 285k

Mine- 95 2500 4x4, 47rh, Billet TC , shift kit, 285 timberline M/T. Bhaf intake w/ custom heat shield, 5" flo-pro ,147k. 10 plate, 191 dv's, Di Pricol pillar gauges, boost elbow, piers I/C boots timed at 17.5*
On the shelf - 3k gsk, grover air horns
coming soon- Tow mirrors, and Twins?


looking for - 97 or 98 reg cab (or ext cab short box in the 98)4x4 5 sp 12v
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Old 10-10-2006, 09:36 PM   #5 (permalink)
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I'm getting ready to install my Suncoast tranny and will be installing all new cooler lines in the process. I will be using 1/2" Aeroquip double braid hydraulic hose. The fitting size you need in the tranny is 1/4"NPT. The fittings on the Heat Exchanger is 3/8"NPT in the rear and 1/2"NPT in the front. I'll be running the Double braid all the way up front to a coupler, then a short piece of pushlock to the tranny cooler. Give me a couple days and I'll post up pictures and a complete parts list.
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http://www.hoeslidiesel.com/hdhp.htm
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Old 10-11-2006, 07:35 PM   #6 (permalink)
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I'm not going to get into an argument about this , but those are NOT NPT threads , there is no taper to them. that's why I made my fittings.
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Dad's 97 2500 2wd slt laramie, star wheel ahead , afc housing slid ahead. otherwise stock... 5 spd 285k

Mine- 95 2500 4x4, 47rh, Billet TC , shift kit, 285 timberline M/T. Bhaf intake w/ custom heat shield, 5" flo-pro ,147k. 10 plate, 191 dv's, Di Pricol pillar gauges, boost elbow, piers I/C boots timed at 17.5*
On the shelf - 3k gsk, grover air horns
coming soon- Tow mirrors, and Twins?


looking for - 97 or 98 reg cab (or ext cab short box in the 98)4x4 5 sp 12v
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Old 10-11-2006, 09:12 PM   #7 (permalink)
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Quote:
Originally Posted by JKM View Post
I'm not going to get into an argument about this , but those are NOT NPT threads , there is no taper to them. that's why I made my fittings.
The threads in the tranny are straight, but the fittings are NPT. I can take pictures and show you if you want. You can also call and ask any of the tranny shops. I called Suncoast, which is where my tranny is coming from, and they also verified that the fittings are NPT. I called them before I had them out. I have them out and verified that they are NPT. A NPT will seal in a straight thead. There is plent of information on the net that will confirm this. Here is a picture of the tranny fitting. It is 1/4" NPT.
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47RE cooler line replacement-100_2624.jpg  
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Silverline 4" Turbo Back Exhaust
Edge Comp, BHAF, Pyrometer, Tranny Temp, Boost, and Fuel Pressure Guages from Isspro
Suncoast Tranny and Triple Disc Convertor
http://www.hoeslidiesel.com/hdhp.htm

Last edited by SMOKNISB; 10-11-2006 at 09:25 PM.
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Old 10-12-2006, 11:23 AM   #8 (permalink)
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Good, luck , that is all i am going to tell you. If you try and put a tapered pipe thread fitting in there , it will not tighten up enough to seal , and if you tighten it more , you will crack the housing.
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Dad's 97 2500 2wd slt laramie, star wheel ahead , afc housing slid ahead. otherwise stock... 5 spd 285k

Mine- 95 2500 4x4, 47rh, Billet TC , shift kit, 285 timberline M/T. Bhaf intake w/ custom heat shield, 5" flo-pro ,147k. 10 plate, 191 dv's, Di Pricol pillar gauges, boost elbow, piers I/C boots timed at 17.5*
On the shelf - 3k gsk, grover air horns
coming soon- Tow mirrors, and Twins?


looking for - 97 or 98 reg cab (or ext cab short box in the 98)4x4 5 sp 12v
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Old 10-12-2006, 08:07 PM   #9 (permalink)
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Why dont you try a little research before you give advice. There is plenty of information out there about straight and tapered threads. It will seal. That is what it came with from the factory. Look at the above picture. You can also call any tranny builder and they will tell you the same.
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1999 Dodge Ram 2500 24V Cummins Diesel
4X4 Club Cab Long Bed, 159K miles
Silverline 4" Turbo Back Exhaust
Edge Comp, BHAF, Pyrometer, Tranny Temp, Boost, and Fuel Pressure Guages from Isspro
Suncoast Tranny and Triple Disc Convertor
http://www.hoeslidiesel.com/hdhp.htm
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Old 10-13-2006, 01:50 PM   #10 (permalink)
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I don't need to do research , when i have first hand experience. Would you like me to provide pictures of the mess that an NPT Tapered fitting made for me?

If you wish to use tapered fittings , all the power to ya buddy, and i wish you good luck.
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Dad's 97 2500 2wd slt laramie, star wheel ahead , afc housing slid ahead. otherwise stock... 5 spd 285k

Mine- 95 2500 4x4, 47rh, Billet TC , shift kit, 285 timberline M/T. Bhaf intake w/ custom heat shield, 5" flo-pro ,147k. 10 plate, 191 dv's, Di Pricol pillar gauges, boost elbow, piers I/C boots timed at 17.5*
On the shelf - 3k gsk, grover air horns
coming soon- Tow mirrors, and Twins?


looking for - 97 or 98 reg cab (or ext cab short box in the 98)4x4 5 sp 12v
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Old 10-13-2006, 08:36 PM   #11 (permalink)
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We do group hugs if anyone is having a bad day......
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Old 10-13-2006, 09:39 PM   #12 (permalink)
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We do group hugs if anyone is having a bad day......
LOL...thats pretty funny.
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1999 Dodge Ram 2500 24V Cummins Diesel
4X4 Club Cab Long Bed, 159K miles
Silverline 4" Turbo Back Exhaust
Edge Comp, BHAF, Pyrometer, Tranny Temp, Boost, and Fuel Pressure Guages from Isspro
Suncoast Tranny and Triple Disc Convertor
http://www.hoeslidiesel.com/hdhp.htm
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