Friday, October 14, 2022

DIY How to Change Transmission Fluid and Filter Tutorial Demonstration [...

The filter kit (filter and rubber gasket) cost around $40. This vehicle calls for just under 9 quarts of Dextron III brand transmission fluid. Doing this myself saved me quite a bit of money and was easier than I expected. The first thing I did after driving the vehicle up on car ramps was ensure the transmission fluid dipstick came out without a hitch. Then went under the vehicle and removed the 19 millimeter plug in the transmission fluid pan and drained all of the transmission fluid out that I could. Once I let the tranny fluid drain out I started removed the 10mm bolts that hold the pan down to the transmission. I left a couple of bolts in that could be removed with one hand while I held the pan up with the other hand, this way the pan wouldn't just fall to the ground. Once the pan was removed I dumped the remaining transmission fluid in the pan out into the drain bucket. Then I removed the 10mm bolts holding the filter down and easily popped the filter out. I then brought the pan to the workbench and cleaned it all up and removed the old gasket with a razor blade being careful not the ding up the gasket seating surface. Then it was time to lubricate the rubber gasket and place it correctly on the seating surface so the bolt holes line up with the holes on the gasket and then put the pan bolts up through the pan as they will stay in place due to the gasket holes being a little smaller than the pan bolt holes. The pan then easily bolts back up hand tight. I made sure to ensure 19mm the drain plug was fastened hand tight. The filter kit directions calls for 10-12ft/lbs of torque for the pan bolts. Then I rolled the vehicle to a flat spot and added the Dextron III transmission until it started reading on "COLD" portion of the dipstick. I then started the vehicle up in order to warm up the fluid and take a dipstick reading to see where it read on the "WARM" or "HOT" portion. I ended up adding a total of 7 quarts being careful not to overfill it. Then I ran the vehicle through all the gears a few times with the emergency brake on. It worked like a charm. This 1998 Nissan Pathfinder had issues taking off when cold. It would stall once put in drive or reverse when trying to take off with the engine cold. Changing the transmission and the transmission filter fixed the problem.

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