How to flush tranny fluid? - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 10-22-2002, 10:52 AM
**DONOTDELETE**
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How to flush tranny fluid?

Before I give up on my TH400, I want to do a filter and fluid change. The fluid that was in the tranny was just gross! Looked almost like mud and smelt rotten!

I've dropped the pan and removed the filter, but I also know that there's at least 2L of fluid in the system between the coolers and torque converter.

Anyone know a good way to remove all of the fluid? Am I going to be forced to fill up the tranny, run it for a few minutes, then drop the pan again?
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post #2 of (permalink) Old 10-22-2002, 10:56 AM
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Re: How to flush tranny fluid?

I never attempted to change ALL the fluid at once. However if the fluid is that bad, don't waste your time. [img]images/graemlins/crazy.gif[/img]
post #3 of (permalink) Old 10-22-2002, 12:19 PM
ratlover
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Re: How to flush tranny fluid?

If its burnt more than likely your wasting your time changing it. Your trany is already toast

But if you still want to try(it helps to have a buddy)....

Unhook the cooler lines going in and out of the cooler. have the output puking fluid into a 5 gal bucket and stick the line that takes cool fluid back to the trany into a gallon of ATF. Start the truck and the trany will pump all the fluid out of itself. Be carfule not to run the sucking side dry!!! Shut her down if its going to go dry! Might even want to have a extra gal handy incase the first one dont do the trick. Keep flushing till you get red fluid. Then hose out the cooler. They make cans of stuff ment to clean out coolers and lines, or you can just use some air and blow it out good.
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