When you drop the pan, the acculumator body is at the front of the transmission. there are 17 8mm bolts and 2 9mm nuts holding the body on. When you first loosen the acculumator body the trans will pour fluid from every nook and crany in and around the main body, have a pan ready. I had a large piece of cardboard under there with me so it soaked up any dripping the was going on, and it will drip the entire time the pan is off. Took me about 3 hours total was dripping the whole time. There is a small filter located above the acculumator if it comes out when you remove it just reinsert it in the transmission, turn it 180 deg to lock it in. With the acculumator off and now looking at from the top down with the cut out notch to the top the 1-2 shift valve is located on the right side top. using a bolt that held the acculumator in thread it in the cap so you can push it in and remove the locking clip than pull out the cap. Replace the spring with new ones. The kit i had from TransGo replaced the one factory spring with 4 springs. I did all the acculator valve springs and the line pressure regulator as well. They all come apart the same way other than the line pressure valve, that one just had to work at it for it to come out. Reinstall in reverse order and torque the acculumator body to 80-100 inch pounds and trans pan to 19 ft pounds.