alright i got everything to do my fluids and filter in the transmission
how long should it take the drain it all out? and start with all new fluid?

 

You'll pretty-much get only what's in the pan as there's maybe over half the fluid filling the passages of the valve-body and converter. Unfortunately, our converter's don't have a drain plug.

Your gonna dilute the old fluid basically.

 

put it on the machine at the dealer and change every bit and flush too!!$$$

 

There is a way to flush the 4R100 transmission; I learned this on a Powerstroke site. It should workfor the A518 also. That is to:
1. drain pan.
2. remove the return line back to the transmission coming from the coolers up front. This will be the most rear of the tranny lines. Rig a fitting to attach to the pipe fitting that threads into the pan, theis "rigged" fitting should have a hose barb end that will allow you to push on about 7' of at least 3/8" clear tubing.
3. reinstall pan, or plug up the drain port if you have one, and fill tranny pan to required level. Count the quarts.
4. Turn the truck on and run through the gears (foot on brake pedal!) back and forth. You will need a 2nd person to hold the tubing into a bucket and watch closely as the old stuff drains out. As soon as that 2nd person sees a break in flow, or bubbles, turn the truck off.
5. Disconnect rigging of fititng and tubing and reinstall OEM return line.
6. I cant remember what the entire system including the coolers and piping hold, but whatever that difference is from what it took to fill just the pan, pour in that difference. Run the truck again, while shifting thru the gears at a stop, idling.
7. Check level in pan while in neutral. If OK and no signs of leaks, go out and get the transmission fluid warm. Again, recheck in neutral, on flat ground. Top off the ATF if needed.

The powerstroke guys actually do step #4 twice, adding 7 quarts at a time. They hold 18+ gallons of ATF, and more if they have a deep sump pan (24 quarts). So it makes sense that 2 sessions would truly push the old stuff out. The problem with that is that you are expected to waste a quart or so of new ATF. With the A518, you must know the entire capacity, especially if you guys have deep pans. Also, you could measure how much old stuff came out also.

 

Good god, 18 gallons????(typo I hope) I highly doubt it. 18 quarts sounds a little more like it.

A dry 47RH with a deep pan, not the double deep one, which is similar to an A518 except it has a lockup converter. They will take every bit of 4 gallons and maybe a quart or 2 more to fill them.

 

OOPS! I am entitled to one, so there it is. Good catch!

 

While you have the pan off it would be a good time to install a drain plug.

 

yeah i did the drain and all, i found shavings on the magnet, but probably not to bad since it hasent been changed since about 130 000 km ago , i was going to install a drain plug but none were in town at the time so i am going to do it the next time i do the transmisson filter, also does anyones drain plug for there oil pan seam to leak around the copper? mine seams to have a bit of a leak only around there and i cant see it anywere else dripping around the pan.