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Jeremy
Dodge Dakota
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1/19/2006
08:30:41
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 Subject: tranny flush
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has anyone ever flushed there own trannsmission without "the machine" that does it? i was wondering how hard it would be to do it myself... and about how much ATF i should by if i do it
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dd
Dodge Dakota
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1/20/2006
18:10:20
| RE: tranny flush
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drain & refill = 4-5 quarts
dry fill = 9-14 quarts (depending on model)
I've done mine a couple times and its fairly easy to do.
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lowpar
Dodge Dakota
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1/23/2006
09:52:05
| RE: tranny flush
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Fairly simple, especially if you have a hoist to work on. While unbolting the trans. pan loosen all bolts, but only take rear half out completely at first to let old fluid drain out without making a mess. I would suggest replacing the filter and gasket as well, fairly cheap at your local parts store. Filter is only held on by 3 bolts and new gasket is simple enough.
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Jeremy
Dodge Dakota
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1/23/2006
11:32:38
| RE: tranny flush
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Message:
thanks for the info. i know how to change the fluid in the pan, but since all the fluid in the tranny needs to be changed, not just the 3 pints that the pan holds, i would like to flush the entire transmission. i was told that if you disconect both lines from the tranny cooler and hook hoses to them, once you figure out which one is the push, and which one is the pull, all you do is stick the hose that sucks into a bucket with fresh ATF and the other into an empty bucket. i think this will work, but i was wondering if anyone else has done it this way before? i would of coarse change the fluid and filter in the tranny pan before i did the flush.
thanks
Jeremy
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daveshotdako
GenIII
1/23/2006
12:50:27
| RE: tranny flush
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Message:
jeremy,
your idea would work in theory but the only problem is that there is no pull in the return line. there is only pressure pushing through the cooler and then back to the tranny. the way they do it with there "machine" is they have a big tube with fresh atf in it and a plunger at the bottom. they hook up the pressure side to the empty end with the plunger and then hook the return line to the other end with the fesh atf. they then crank the motor up and the pressure on the empty side of the tube forces the plunger up and forces the fresh fluid into the tranny and the old fluid into the tube. i hope this info helps you out.
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custom 48mm tb, tps @ .768, relocated IAT, 180 t-stat, autolite double platinum, taylor wires, flowmaster 40 delta flow single in/dual out, CAI, superchips tuner
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Jeremy
Dodge Dakota
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1/24/2006
08:35:39
| RE: tranny flush
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Message:
thanks alot daveshotdako that info helps a bit. i also talked to the chrysler instructor at school about it. he also feels it isnt the greatest idea. he thinks just drop the pan, do the filter and replace the gasket. so thats what im gonna do. thanks for the info guys
Jeremy
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Gregg
Dodge Dakota
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1/24/2006
23:13:25
| RE: tranny flush
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Message:
Hmmm, the flush with the supply line disconnected does work. An old Honda guy showed me this at his shop. Pull the transmission pump output or supply line to radiator. Leave the return line connected. Check the manual or if you have it wrong it won't pump fluid in the next step.
Have an assistant start the car and leave at idle. As the dark fluid pumps out of the extension hose into a container, pour new fluid into the fill funnel steadily. Have open trans fluid quarts ready to go. Watch for a color change when its bright red shut off the car. Check for proper level before operating. You need some extra fluid so buy a couple qts. over capacity.
The filter may still need changing. This works for a more complete drain then tipping the pan only. Call around, some trans shops still use this method.
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Gregg
Dodge Dakota
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1/24/2006
23:18:50
|  RE: tranny flush
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Message:
I got that so wrong above. You disconnect the return line to the trans and leave supply connected. The flushed fluid will include what is in the radiator lines.
Well, I remembered it was just one line to disconnect anyway.
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