You will need:
- Clean rags
- Safety goggles
- Floor jack
- Jack stands
- Drain pan
- Rubber mallet
- T25 torx bit
- Gasket scraper
- Cleaning solvent
- Torque wrench
- The EPA warns that prolonged contact with used transmission fluid may cause a number of skin disorders, including cancer. Make every effort to minimize skin contact with used transmission fluid, including wearing protective gloves and safety goggles. Wash your hands and any other affected skin areas with soap and water as soon as possible after exposure to used transmission fluid.
- Let the transmission cool completely before beginning.
- Park your Dodge Ram pickup on a solid, level surface. Put wheel chocks behind both rear wheels. Raise the front end of the vehicle off the ground by placing a floor jack under the front crossmember. Place jack stands under frame just behind the front wheels and lower the frame onto the jack stands. Raise the rear end by placing a floor jack under the rear differential housing. Place jack stands under the frame just in front the rear wheels and lower it onto the jack stands.
- Remove the bolts from the transmission pan with a socket and ratchet, leaving the four – one at each corner. Place a drain pan under the transmission pan. Remove the rear corner bolts. Loosen the two remaining bolts a few turns each until fluid starts to drain from the pan. If the pan is stuck to the case, tap gently on the pan with a rubber mallet to break the seal. Remove the two bolts and dump the fluid into the drain pan.
- Remove the three screws securing the filter to the valve body with a T25 torx bit. Remove the gasket between the filter and valve body. Install the replacement filter and gasket. Scrape any residual gasket material off and transmission case using a gasket scraper – be careful not to gouge the aluminum case with the scraper.
- Scrape any gasket material off and transmission pan. Clean the clutch material out of the bottom of transmission pan, and off of the removable magnet, with parts cleaning solvent. The magnet is there to catch metal material and keep it from circulating with the fluid. Look for large pieces that may be a sign of an internal problem.
- Install the replacement gasket on the pan -- do not use silicone or gasket sealer – and hand tighten the bolts making sure the gasket is lined up with the pan and bolt hole. Hold the pan against the case and tighten each bolt just until they touch the pan. To each bolt in a crisscross pattern to 150 inch-pounds with a torque wrench. Wipe any residual fluid off of the case, pan, crossmember, etc.
- Raise your Dodge Ram 1500 or other pickup truck off of the jack stands and lower it to the ground. Place a clean piece of cardboard or a drop cloth under the pan.
- Fill the transmission with three quarts of the fluid recommended by the manufacturer. Set the parking brake, start the engine, and while holding the brake shift the transmission through each gear. Put it in park, leave the engine running, check the fluid level and add as needed. Check the pan for leaks. Drive your truck about five miles and recheck the fluid level.