joem

my 47RH developed a massive leak leaving a contentious trail behind the truck, lucky for me i only drove a few miles so the trans never went dry or lost pressure and didn't fry any plates- I Could not pinpoint the leak as the entire underside was raining oil from everywhere so I picked up some UV dye and threw it in while idling in N, man that stuff works great! looks like its pouring out from this line right at the transmission on the drivers side front- cant seem to find new lines at geno's or other online sources, anyone got a idea where I can pick up a new line? Oh and the fitting is tight by the way

patdaly

This should fix you up.........

1995 DODGE RAM 2500 PICKUP 5.9L L6 DIESEL Turbocharged Oil Cooler Line | RockAuto

Pretty common BTW

joem

thanks Patdaly, the old 12v has been pretty trouble free until this- but man my 2011 4th gen is a code setting mess- and not many on here in the 4th gen forums know alot

joem

got the old line off, the new line doesn't have the large brass nipples- Do i reuse the old ones or should have the new line came with them?

Robert Rausch

If the old ones are good, why not reuse them?

I wish I'd found those lines. I replaced my lines 2-3 years ago with marine grade rubber lines. They work well, but a few weeks ago one came off it's fitting at the trans while I was stopped at a stop light and I pumped out 2 gallons of trans fluid before I caught I had a problem. Big mess and an expensive tow, since it was sitting in a left turn lane at a big, busy, 6-way intersection and I couldn't push it across.

joem

The new line has much larger seized threads, Napa said its the only one they cross reference and one end female where both ends of the original are male- a transmission shop said they could sell me the correct adapters- but a friends father who does mobile hydraulic repair took a look at the ends, popped one off and said it was most likely just a failed o ring- original o ring was pretty flat and it looks like the oring ate threw the painted surface on the line and started to leak due the increased gap. He Emory papered the sealing area on the line, larger New O ring installed and the fitting now turns with much more resistance- will post up results soon He did state that he would rather make me up a flexible 2,000 PSI rated line that I could zip tie next to the rear return line. First time messing with these cooler lines but as per GOOGLE searches it wont be my last

Robert Rausch

The trans cooler line is under a small amount of pressure. Less than 20 psi if my memory serves me right. Can anyone confirm?