TH400 Fluid direction

[Ferret]

Hey guys!

does anyone have a chart or diagram with th flow-direction of the fluid inside a TH400? I don't mean to ask what port is the in- or outlet for the radiator, but what way goes the ATF inside? does it go from the pan through the valve-body to the converter and finally to the cooler or does it take another way?

i'm asking because i wan't to know what part of the transmission really heats up the ATF. I have the gauge-sensor on the out-line to the cooler with readings between 165°F and 200°F (depending on traffic, road condition and ambient temperature).

 

[MeanBuicks]

The fluid exits the pump gears and goes through the pressure regulator where it splits off into mainline pressure to the valve body and converter charge pressure.

The fluid that runs through the converter picks up the most heat so it returns to the transmission through the cooler circuit.

 

[Ferret]

The fluid that runs through the converter picks up the most heat so it returns to the transmission through the cooler circuit.

thank you for the infos ^^ hmm, guess with 165°F to 195°F on the out-port, the temperature is in an excellent range 😀