Since my local dealer went out of business looks like I am going to have to fix my cooler lines myself.

Has anyone cut the crimp off of the cooler line? What is under there? Is the cooler line barbed under the crimp? I would think that there would be some type of barb under there. What I was thinking cut the crimp off, pull the old hose off and slide a new hose on. Might use hose clamps or some kind of crimp for hydralic lines. Have you seen the band type clamps like on large hoses like 2,3,4 inch for the transfer of fluids that are pumped under a good amount of pressure. They don't have a habit of blowing off.

I have read something about 85 pounds of pressure has anyone actually verified this with either a guage or Allison manual. 85 seems very high. You know the aftermarket trans coolers you buy have barbed fittings with hose clamps holding them on. I know I pulled the cooler line off of an Isuzu truck with an Allison 1000 trans to flush the fluid out and there was a good amount of volume but little pressure with the line dumping the fluid into a bucket. Not sure what kind of restriction the fluid will see when going back into the trans, but if there is to be a pressure spike I would think it would be where the fluid goes back into the trans not the cooler's themselves.

Just knocking some ideas around.

look at this:

http://www.dieselplace.com/forum/showthread.php?t=231451

or this:

http://www.dieselplace.com/forum/showthread.php?t=290336

Since my local dealer went out of business looks like I am going to have to fix my cooler lines myself.

Has anyone cut the crimp off of the cooler line? What is under there? Is the cooler line barbed under the crimp? I would think that there would be some type of barb under there. What I was thinking cut the crimp off, pull the old hose off and slide a new hose on. Might use hose clamps or some kind of crimp for hydralic lines. Have you seen the band type clamps like on large hoses like 2,3,4 inch for the transfer of fluids that are pumped under a good amount of pressure. They don't have a habit of blowing off.

I have read something about 85 pounds of pressure has anyone actually verified this with either a guage or Allison manual. 85 seems very high. You know the aftermarket trans coolers you buy have barbed fittings with hose clamps holding them on. I know I pulled the cooler line off of an Isuzu truck with an Allison 1000 trans to flush the fluid out and there was a good amount of volume but little pressure with the line dumping the fluid into a bucket. Not sure what kind of restriction the fluid will see when going back into the trans, but if there is to be a pressure spike I would think it would be where the fluid goes back into the trans not the cooler's themselves.

Just knocking some ideas around.

The original lines are smooth underneath, except for the new ones for 09's and later replacements that have a groove with and o-ring. There may be even later ones with ribs, but can't confirm that.

In cold temps, which is were you usually see leaking lines, you can see pressures as high as 250 psi because the fluid doesn't push through the coolers easily. I wouldn't use anything less than 300 psi working pressure rating.

There are compression type fittings that work well on the steel line diameter.