Malleus
Far west of Siegen
Now you are ready to flush the transmission. This takes about 10 minutes.
Prefill the transmission with one (1) quart less than you drained out. I use a short funnel and return the old fluid to the empty ATF quart bottles. This way I keep track of how much fluid (old vs. new) is where. Another poke-yoke to the rescue.
You are now going to start the engine, or your helper is, and the transmission pump will push fluid out of the cooler lines, through the cooler and into the old fluid container you have placed on the ground. If you followed my recommendations, and used the 34-inch long tubing, the container will be on the ground where you can see it while you're filling the transmission through the dipstick tube. This is poke-yoke number 3.
Pro tip, if you are using a helper, don't stand in front of the bumper. No poke-yoke needed; this is a self correcting problem.
Watching the fluid fill the container on the ground, pour in as much fluid as the pump pushes out. In my experience, the pump flows about as fast as a bottle drains into the funnel; maybe a tad slower.
While the old fluid is flowing out, have your helper, parking brake engaged and foot (or feet) on the brake, run through the gears one at a time, at about a 2-count: P to R, count 1, 2; R to N, count 1, 2, and so on until you have gone down and back up to park. You can do this as many times as you have room in the graduated container.
I stop at three quarts, but you can go all the way to a gallon, if you're bold. Once you fill the container, stop the engine and dispose of the old ATF any way you choose. I use the empty bottles.
Prefill the transmission with one (1) quart less than you drained out. I use a short funnel and return the old fluid to the empty ATF quart bottles. This way I keep track of how much fluid (old vs. new) is where. Another poke-yoke to the rescue.
You are now going to start the engine, or your helper is, and the transmission pump will push fluid out of the cooler lines, through the cooler and into the old fluid container you have placed on the ground. If you followed my recommendations, and used the 34-inch long tubing, the container will be on the ground where you can see it while you're filling the transmission through the dipstick tube. This is poke-yoke number 3.
Pro tip, if you are using a helper, don't stand in front of the bumper. No poke-yoke needed; this is a self correcting problem.
Watching the fluid fill the container on the ground, pour in as much fluid as the pump pushes out. In my experience, the pump flows about as fast as a bottle drains into the funnel; maybe a tad slower.
While the old fluid is flowing out, have your helper, parking brake engaged and foot (or feet) on the brake, run through the gears one at a time, at about a 2-count: P to R, count 1, 2; R to N, count 1, 2, and so on until you have gone down and back up to park. You can do this as many times as you have room in the graduated container.
I stop at three quarts, but you can go all the way to a gallon, if you're bold. Once you fill the container, stop the engine and dispose of the old ATF any way you choose. I use the empty bottles.
Last edited:
