Next, undo all the bolts that secure the main valve body to the transmission. There are quite a few bolts and you should make a note of where each one comes from as they are all different lengths and should go back in the same position. I made a simple cardboard template and poked the bolts through. When you remove the valve body, beware that there are some parts that may fall out. This first pic shows the part which will fall out. Its a ball bearing, plastic holder and spring. Lower the valve body slowly and you may not drop it on the floor and have to spend the rest of the day searching for it. beware also that the accumulators dont fall.....
Pic 2 : Now, we are going to add shims under these two accumulators on the left. This pic was taken with the new shims fitted. the accumulators will be sitting lower than this. Simply pull them out. Remove them only one at a time and dont get their parts mixed up. One has one spring and the other has 2 springs.
Pic 3 : Heres one of the accumulators along with its spring. The middle part is our new shim that will raise the tension on the accumulator. Fit both shims into the accumulators followed by the spring.
Pic 4 : Have a great mate hold both the accumulators in position with one hand, and the ball and spring assembly with the other while you carefully put the valve body back onto the transmission. Make sure that the selector gear is positioned as shown or the selector will not work !!!
Tighten all the bolts back into their original positions. I think about 17Nm is about right. Refit the electrical connections to the solenoids and then fit a new filter. My filter came with a cork pan gasket, but if you dont have anew one use a suitable silicon sealant when fitting the pan.
Make sure the pan is nice and clean. Clean the 4 magnets. If they were covered in more than just fine metal filings, then it might be worth having the transmission looked at more professionally. Also clean the mating face on the transmission and fit all the bolts back in place. Tighten them sequentially. Refill the transmission to the required level on the dipstick. Start the engine, allow to reach running temperature. Move the gear selector through all gears once or twice then recheck and refill the oil.
Elliot