can anyone direct me on how to flush my tranny out so i can put the right fluid in it. i put ATF+3 in it and i was told that i need to flush it and put ATF+4 in my tranny. so if anyone can direct me i'd appreciate it.

thanks

 

I don't think you can flush it yourself. I take mine to a "Quicklubber" place and they do it with a special machine.

 

Don't worry about it too much.

If you just can't stand having the wrong lube, just drop the pan and get as much of the +3 out as you can, then fill it with +4.
If you do this in the morning, after the truck has sat all night, the converter will be close to empty, and all will be in the pan.

No need to pay for a flush.

I ran about 10K-15K on about unknown ratio of +3 and +4, no problems.

I was trying to fix a leak at my temp sender, lost 4 quarts, couldn't find +4 so I used +3, leak not fixed.
Tried again, a couple months later, same thing, 4 quarts lost, but found Valvoline Extreme ATF (+4 compliant per the back of the label), and ran that mix for another 5K+.


phox

 

I did the tranny flush on my truck last year. The first thing that I did was to drop the pan; change the filter and adjust the rear band. I used a new pan gasket although the existing gasket could have been reused. I measured how much fluid came out of the pan and put that much back into the truck. It came out to be 7 quarts and 24 ozs. Make sure that you have a at least a 15 quart drain pan. The next step is to drain the torque converter. Since it doesn't have a drain plug then you have to disconnect one of the lines at the transmission cooler in front of the radiator or do as I did, and disconnect the return line at the transmission. After I disconnected the return line, I attached a 3/4" ID hose to this line. I found a hose that had a preformed bend on one end and that made it easier to connect. I have used a straight hose before so that will work as well, just not as easy.

I placed one end of the hose in the drain pan. I had previously marked the inside of the pan showing various levels, i.e. 3 qts, 4 qts, 5 qts. Make sure that you mark the level with something that can be seen through transmission fluid. Also make sure that you start with an empty pan. The next step requires starting the truck and allowing it to run for a couple of minutes (a lot of fluid will come out fast). Make sure that you can see the fluid coming into the pan and about how much is in there by looking at your level markings. Using this method, I was able to drain about 4 quarts each time. Remember, when you drained and refilled the pan you put in about 8 new quarts of fluid. Dry fill on the 47re for these trucks is about 16 quarts. So, when you drain the pan you get 8; when you run the truck for a couple of minutes two times then you should get about 8 more. When I did my truck, I ended up using 17 quarts plus a few ozs. After you do all this, then drive the truck about 20 miles to get the transmission fluid to operating temp (180°F). The dipstick will be hot to the touch. Park the truck and check the fluid level. Make sure the truck is parked on level ground and the engine is running and the tranny is in neutral. If you overfill the tranny, you can always siphon out the excess. I believe the owners manual gives instructions on how to properly check the tranny fluid.

There are a few things you should watch for, the transmission pan bolts should be torqued at 13 foot lbs and the filter screws at 35 inch lbs. Make sure that you have reliable torque wrenches. If you choose to remove the return line fitting at the transmission be careful when you re-install it. The transmission housing is aluminum. Do not cross thread the fitting or over tighten it. I think the torque setting for this fitting is 13 foot lbs. I just snugged it down, ending up with the same number of threads showing as before. Also be careful because the line will bend. One final note, I ended up using a synthetic fluid, ATF +4, Type 9602 as per Chrysler requirements. If you use a quality synthetic to do the flush, then after that all you need to do in the future is drop the pan because you will end up changing almost half the fluid anyway. I most likely will never flush the tranny again.

The above described method is what I did to flush the tranny in my truck. It worked for me because I took my time. I did not have a helper - that would have made it easier to watch the fluid being flushed out. Make sure that you watch the fluid level each time you run the truck and don't let too much come out without adding more.