Common Problems: Cummins 47RE

January 2018 Tech Corner, Feature Colin Peterson

Up Close & Personal

One prime example of a truck with a multitude of 47RE problems is a 2001 24-valve RAM owned by Taylor Fisk. That truck has since had its old RE replaced by an in-house rebuilt 47RE from Power Driven Diesel (which also manufactures its own line of transmission fluid) and a torque converter from Diesel Performance Converters (DPC). PowerTech Diesel collected the major components from those manufacturers and did the meat of the work on Fisk’s truck, which came into the shop barely operable. The Idaho Falls shop didn’t bother to fix the old transmission, as Fisk wants to put more mods on his truck, and the 47RE isn’t a safe modifiable transmission.

“His transmission was surging and slipping with many other things wrong with it,” says Willsey. “We also replaced his converter because it was stuck. The stock converter has a single disc design; it’s not recommended for pulling so many heavy loads.”

The DPC converter that’s now on his truck has a triple-disc design, which provides a more powerful clamping force and features a billet lid, making it very efficient and much better suited for frequent heavy hauling and performance boosts.

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