So finally got the power steering bled. got the radiator flushed and trucks starts up and sounds good. was backing it down the drive to finally take it for a test drive and found a pretty good oil leak coming from one of the transmission cooler lines.

So back in the driveway she goes to find the leak. Looks like a line is cracked likely from the rattle of a cummins in a chevy. Which leads to my question.

This truck has what looks like a heat exchanger under the exhaust manifold on the right side of the motor. with trans lines going into this, and a small trans cooler in the front of the truck, looks more like it used to be a power steering cooler, and then lastly a 3rd trans cooler under the bed with an electric fan attached to it. Looks like it has a temp switch on this one.

Im feeling like thats way overkill and over complex. Any reason why I wouldnt get rid of at least 1 of these (thinking the one in front of truck where the failed lines are for now. and possibly the heat exchanger in favor of just 1 cooler?

 

So this is in a chevy then? If it was in a stock Dodge with an automatic this is what I'd say:
The heat exchanger under the exhaust manifold warms up the tranny oil and also offers some cooling too I guess.
There is a cooler up front with the radiator too, no clue about yours since it's a transplant with no description or pictures.
Dodge offered an underbed cooler as a dealer option. It was behind the driver and before the rear wheelwell and had a temp switch.
If you tow much and respect your tranny you'll appreciate all the cooling.
Pictures and/or a signature would speak volumes.

 

Here is what you are looking at,

I would keep it if all possible, if the cooler is leaking, I know where to get a new one.

When you replace the hoses, use TOC hose, I bought it from O'Reillys.


Super Duty Transmission Oil Cooler - Dodge Diesel - Diesel Truck Resource Forums

Jim

 

So I appear to have a cracked line. will replace it. just looks like freking lines everywhere under this truck. trying to clean it up and make it problem free.

the front cooler is a very small one about 6"x14" cooler. the lines are using an assortment of hard lines and rubber hoses. I feel like I need to at least clean it up and move this stuff. some of it is attached and some of it is kind of hanging under it.

I will keep the heat exchanger and under bed cooler for now and bi pass the front one. AT this point I am just trying to get her driving so i can work on i am sure more kinks.

KRB yes its a 93 chevy diesel truck with a cummins transplant. I will post pics once i can get them uploaded here.

its kinda a bastardized install but i wanted a fun to work on project. (my wife did not! lol)