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2019+ External Transmission Cooler

Discussion in '3rd Gen Tundras (2014+)' started by chasenicholas93, Oct 17, 2019.

  1. Nov 30, 2019 at 6:32 PM
    #121
    WrigglingWilly

    WrigglingWilly New Member

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    So, to sum this up, 2018 models with tow package have a cooler for the trans, but the 2019 models do not?
     
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  2. Dec 1, 2019 at 4:56 AM
    #122
    JohnLakeman

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    Seriously, you should rethink "blazing" this trail. Right now, your transmission is at less risk from overheating, than if you try to add a cooler. That's my penance for encouraging you. ;)
     
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  3. Dec 1, 2019 at 5:20 PM
    #123
    ryanwgregg

    ryanwgregg New Member

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    Correct. 19-20 do not.
     
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  4. Dec 1, 2019 at 5:47 PM
    #124
    chasenicholas93

    chasenicholas93 [OP] New Member

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    stuckinohio, Rica25 and sask3m like this.
  5. Dec 6, 2019 at 6:04 AM
    #125
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Cooler has arrived.

    20191205_211939.jpg
     
  6. Dec 6, 2019 at 6:23 AM
    #126
    blaserdude

    blaserdude New Member

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    Looks good. What fittings does it use? Were they supplied?
    bc
     
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  7. Dec 6, 2019 at 7:18 AM
    #127
    chasenicholas93

    chasenicholas93 [OP] New Member

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    It does not come with the fittings for the hose. It has 3/8 female fitting. I'm going to order some elbow fittings today as well as send measurements to a shop to make a custom bracket.
     
  8. Dec 6, 2019 at 7:25 AM
    #128
    blaserdude

    blaserdude New Member

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    NPT fittings?
     
  9. Dec 6, 2019 at 7:36 AM
    #129
    JohnLakeman

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    Before you order, you had better double-check the size of the threaded connections in that cooler. Those appear to be 1/2" FNPT (female national pipe tapered edited*) to me, which is a common threaded connection. Threaded pipe nipples and fittings are available in 3/8" NPT, most often in brass for air or gas, but the 3/8" size is not as common. I could be wrong because of the photo scale.
     
    Last edited: Dec 6, 2019
  10. Dec 6, 2019 at 7:41 AM
    #130
    chasenicholas93

    chasenicholas93 [OP] New Member

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    I measured the fitting its 1/2 inch. I just need to find good 1/2 NPT to 3/8 barb elbows with one with a 12 inch extension if possible since I'm mounting the cooler vertically. I also receive my gates transmission hose and Toyota thermostat today.
     
  11. Dec 6, 2019 at 7:49 AM
    #131
    blaserdude

    blaserdude New Member

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    Interested to see bracket.
     
  12. Dec 6, 2019 at 7:54 AM
    #132
    JohnLakeman

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    Check inside the fitting to make sure there is no smaller flare taper. Measure the threaded ID of the fitting. Diameter will be slightly different depending if you measure root of thread or the peak, but that level accuracy is not important. Compare measured ID of fitting to the pipe outside diameters given in table below (~5/8" = 3/8" NPT, ~7/8" = 1/2" NPT):

    Snip NPT.jpg
     
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  13. Dec 6, 2019 at 7:59 AM
    #133
    chasenicholas93

    chasenicholas93 [OP] New Member

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    It does come with a 1/2 to 3/8 adapter.

    20191206_075744.jpg
    20191206_075628.jpg
     
  14. Dec 6, 2019 at 8:02 AM
    #134
    JohnLakeman

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    That appears to be an AN to NPS (national pipe straight) adapter. Which end threads into the cooler?...I'm betting it's the untapered end.
     
  15. Dec 6, 2019 at 8:06 AM
    #135
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Big end goes to cooler which is 1/2. The smaller end (3/8) will go the the fitting and hose.

    20191206_080449.jpg
    20191206_080434.jpg
     
  16. Dec 6, 2019 at 8:10 AM
    #136
    JohnLakeman

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    You can simplify the connection by skipping the adapter entirely, and using a hose barb elbow like the one you showed in an earlier post; i.e. elbow threaded end (1/2" NPS ?) with o-ring seal directly into the cooler, and hose barb to fit whatever hose you're using.

    It is ALWAYS better to use the manufacturers specified threaded fitting size rather than guessing or measuring...might want to double-check the manufacturer spec.
     
  17. Dec 6, 2019 at 8:14 AM
    #137
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Okay fellas, I guess it's a early morning. The connection is 1 inch to 3/4. I'll have to verify with the hayden website after work to make sure before I order.
     
  18. Dec 6, 2019 at 8:46 AM
    #138
    timsp8

    timsp8 Member

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    That looks like the one I put inline in my 2010. I’m pretty sure I used the adapter that came with it with no leaks. Don’t think the atf fluid is under much pressure at the cooler.
     
  19. Dec 6, 2019 at 5:11 PM
    #139
    chasenicholas93

    chasenicholas93 [OP] New Member

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    I need some help finding some 90 degree elbows that have 3/8 barb end connection. I can't find the right size. Below are the stats on the cooler HD777.

    Screenshot_20191206-124001_Drive.jpg
     
  20. Dec 6, 2019 at 6:10 PM
    #140
    Hbjeff

    Hbjeff New Member

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    The video of the guy changing the atf fluid on youtube via the cooler hoses looked pretty low pressure.
     
  21. Dec 6, 2019 at 6:24 PM
    #141
    chasenicholas93

    chasenicholas93 [OP] New Member

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    What do you all think of this setup?

    Screenshot_20191206-182338_Chrome.jpg
     
  22. Dec 6, 2019 at 6:46 PM
    #142
    JohnLakeman

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    I see nothing here on cooler model HD777, unless it's that Model 243777 on the last chart. I've never worked with AN tubing fittings and I am unfamiliar with AN fitting descriptions.

    Your best bet is to talk to technical service where you bought the cooler. Tell them the cooler model number and what you are trying to do. Maybe they sell adapter fittings that they know will work.
     
  23. Dec 6, 2019 at 6:53 PM
    #143
    chasenicholas93

    chasenicholas93 [OP] New Member

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    It is the 243777 model. After some research AN fitting (Army-Navy) are for high performance applications due to the seal from the metal to metal contact. Based on the fitting type (12an) I'm just going to order these parts and hope they fit. I'll let everyone know how it goes!
     
  24. Dec 10, 2019 at 6:45 PM
    #144
    chasenicholas93

    chasenicholas93 [OP] New Member

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    What do you guys recommend I do to secure the transmission hose? Are there curtain brackets someone recommends? Also, anyone recommend I install a filter like the one below?

    Screenshot_20191210-184246_Amazon Shopping.jpg
     
  25. Dec 11, 2019 at 3:24 AM
    #145
    timsp8

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    When I did mine the hoses were short so I didn’t need to secure them. But maybe something like this:

    https://www.amazon.com/Autobahn88-Stainless-1-82-2-17-47-55mm-Plumbing/dp/B019NY6P20

    I also used an inline filter behind the grill so it was easy to change. Those leak though so watch it. But they are cheap enough to replace easily.
     
  26. Dec 17, 2019 at 9:52 AM
    #146
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Anyone have the torque specs on the atf cooler bolts?
     
  27. Dec 17, 2019 at 10:33 AM
    #147
    HappyGilmore

    HappyGilmore Ex 1st Gen Member

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    Im late to the party. Did you get your fittings figured out? I am familiar with all the thread and fitting types shown/ listed above, and how the sizes are listed. The cooler looks to have -8 (1/2") Female ORB fitting Some general info:

    AN is also known as JIC.

    Straight thread with the O ring is also known as O Ring Boss or ORB.

    ORB and JIC have the same thread. You can slide an O ring on a JIC flare fitting and use it in place of an ORB if needed.

    They make conical seals for the JIC (AN) fittings if you have leaks, but hydraulic use they usually aren't needed. Make sure you torque to proper spec, other wise it can deform from over tightening and not seal as well.
     
  28. Dec 17, 2019 at 10:37 AM
    #148
    chasenicholas93

    chasenicholas93 [OP] New Member

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    I got it figured out. They are 10AN o-ring fitting for the hayden. I got 6an 90° and 45° for the hose fittings.
     
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  29. Dec 21, 2019 at 10:48 AM
    #149
    chasenicholas93

    chasenicholas93 [OP] New Member

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    Does anyone have the torque specs for the 32970-34030 cooler assembly bolts?
     
  30. Dec 21, 2019 at 12:39 PM
    #150
    blaserdude

    blaserdude New Member

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    I don't but it's o ring sealed so it won't take much.
     

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