Transmission cooling lines? hi or low pressure
#1
Transmission cooling lines? hi or low pressure
My question is are the tranny cooler lines (in& out of the radiator) under a high or low preasure. The truck is a 1990 Dakota 3.9 . The rubber hose's that run to the radiator are heat shrunk to the 2.. in and out pipe that are at the bottom of the radiator. Can I cut the hose off to remove the lines from the radiator then add a length of same dia. pipe to the hose at both ends and hose clamp the the new extentions to the new radiator?? Thanks
#2
my 2001 dak 42 trans. the book calls out one of the pressure gauges to be 300 psi. the test for the governor operation shows the highest presure at 280 psi. i can not find a call out for the coolant line pressure. in the chart it calls out the line pressure at 160-270 in rev, which i think is the the highest pressure any where in the trans, but that is internal NOT external. i will make a guess that the coolant line will be 70-90 psi. if i missed something ill get back to you.
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#5
Thanks I think thats the way I'll go
#6
i just checked a 1967 727 coronet book it shows the coolant line to be 5-30 psi. my 2001 46re trans shows the converter lube pressure at 60-130 that feeds the coolant line after it goes from the converter to the coolant line. this the highest pressure in this line in rev. other gears are less most 2-57 psi.
#7
i just checked a 1967 727 coronet book it shows the coolant line to be 5-30 psi. my 2001 46re trans shows the converter lube pressure at 60-130 that feeds the coolant line after it goes from the converter to the coolant line. this the highest pressure in this line in rev. other gears are less most 2-57 psi.
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#9
the trans in the 60s did NOT push fluid to the coolant line in park. ill try to check if the newer trans do the same. i was told that the older trans in police cars setting in park with the engine running and A/C running the trans would over heat. my 2001 dak book shows a 42re in park does NOT run fulid through the coolant line. i think chrysler thinks that if the parts are not turning it doesnt need lube to the bearing. but in the hot summer then the trans can still over heat.
#10