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Which side is the tranny cooler return line?

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Old 12-12-2005, 02:49 PM
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Which side is the tranny cooler return line?

I am stumped... When I did my tranny cooler install, I used the 4x4wire DIY 4x4wire which says the passenger side one. Now I am looking at the Yotatech DIY Yotatech as well as Yotatech2 and they both state to use the driver side as the return line.

Does this make a difference? Should I take it off the passenger side and mount it to the driver side line now?
Old 12-12-2005, 03:41 PM
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Grimpy;
I'm not sure how much difference it makes, but I have mine coming out
of the drivers side, into the TRD cooler and then back to the tranny, that
way the radiator part cools some, then the TRD cools more, then back to
the tranny. I did mine per the YotaTech write-up.
db
Old 12-12-2005, 07:19 PM
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The return line is the one that connects into the lower metal tube attached to the tranny.
TRD recommends that you connect to the return line so you can cool the ATF more after it has been cooled by the radiator. If you do the reverse, the radiator will control the temp of the ATF which would negate the presence of the aux. tranny cooler.

On my Hilux Surf, the return line is the one on the driver side.

HTH.

Last edited by KZN185W; 12-12-2005 at 07:23 PM.
Old 12-12-2005, 07:45 PM
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Hmmm... looks like I used the wrong side... thanks for the help guys.
Old 12-13-2005, 04:50 AM
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Originally Posted by RoySharif
The return line is the one that connects into the lower metal tube attached to the tranny.
TRD recommends that you connect to the return line so you can cool the ATF more after it has been cooled by the radiator. If you do the reverse, the radiator will control the temp of the ATF which would negate the presence of the aux. tranny cooler.

On my Hilux Surf, the return line is the one on the driver side.

HTH.
I have mine hooked up this way too.
Old 12-13-2005, 05:57 AM
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The easy way to figure out which line is which is to:
  • Start with a cold engine
  • Pull the skid plates off
  • Start the engine, put the truck in DRIVE and nose it up against a wall
  • Leave it running - and in gear! - get under the truck and grab hold of the cooler lines
  • The first one to get hot is the feed, the cooler one is the return

BE CAREFUL!

Be sure the truck is nosed against something solid, and keep an eye on where your hands are reaching!
Old 12-13-2005, 10:00 AM
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could you apply the parking break with it against the wall, because the truck would still be in gear and it would give you a backup just in case?
Old 12-13-2005, 10:20 AM
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Originally Posted by HUTCHSTACO
could you apply the parking break with it against the wall, because the truck would still be in gear and it would give you a backup just in case?
I'd have someone put it in drive with the e-brake on while I got under and checked rather than up against the wall. Just my personal opinion.

Last edited by MTL_4runner; 12-13-2005 at 03:50 PM.
Old 12-13-2005, 10:30 AM
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i guess that makes sence to, but with the wall you can do it yourself-
Old 12-13-2005, 11:45 AM
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Originally Posted by MTL_4runner
I'd have someone put it in drive with the e-brake on while I got under and checked rather than up against the wall.
Just my personal opinion.
The only reason I bring up the wall method is that I figure that my idling truck ain't gonne move a wall, while is "shouldn't" be able to roll off the e-brake.

Have a buddy in the truck is the safest thing no matter which way you do it.
Old 12-13-2005, 03:52 PM
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Originally Posted by midiwall
The only reason I bring up the wall method is that I figure that my idling truck ain't gonne move a wall, while is "shouldn't" be able to roll off the e-brake.

Have a buddy in the truck is the safest thing no matter which way you do it.
I agree, a wall would be pretty safe, but it would still spook me to be under a vehicle in drive with no one in the driver's seat. I guess I am just being a big
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