How to Identify Transmission?

Discussion in 'Engine/Drivetrain' started by 84Toy, Aug 19, 2012.

  1. 84Toy

    84Toy Member

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    Hi. I am new to the Toyota and RWD scene, so please forgive me if I may sound "noob-ish."

    My rear output shaft transmission seal is worn out and is leaking transmission oil everywhere. I went to AutoZone to get the part just to find out that there were six different 4 speed manual transmissions listed in their computers. I don't which one I have, the transmission is so caked with grime from the road that I can't read what the letters say (stamped on transmission) despite the fact I have already used a wire brush and gotten some grime off, and my repair manual doesn't say sh*t about how to identify.

    Please help, I need an exact location to look at. I can't trust the VIN or the build plate (wherever that is) because the truck's had 4 previous owners, so I'm not 100% certain that it's all original stuff. It's an 84 by the way.

    Also, how do I tell if I have the 1/2 or 3/4 ton version of the truck?
     
  2. blt4drgn

    blt4drgn Enthusiast

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    take the old seal out it has a part number on it i recently had the same issue with a friends ride. we just took out the old one cleaned it up and took it to napa and they had a matching one is minutes
     
  3. dillinja666

    dillinja666 Toyotaholic

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    Actually I think all the tail shafts 4 and 5 speed have the same seal..
     
  4. White Trash

    White Trash Toyotaholic

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    Yes there are several different 4 speeds but only one is all aluminum with a removable bellhousing that you'd likely find in an 84 truck.

    You should have a W45.
     
  5. scrub88

    scrub88 Toyotaholic

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    L45 4 speed ? Or g40
     
  6. White Trash

    White Trash Toyotaholic

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    L 45 is used in early trucks and is cast iron. G 40 is a good possibility and should have the same output seal as the W 45 that was used in later trucks.
     
  7. scrub88

    scrub88 Toyotaholic

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  8. 84Toy

    84Toy Member

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    Out of the markings on the transmission, the only things I could make were what looked like "K40" and then there were like four or five digits/letters after it. I looked, there is no such thing as a K40 transmission for the 22R.

    I will go to the mechanics shop next door and kindly ask them if they can raise my truck up, and get a better look at the transmission. Can't do much with something right in your face about 3 inches away, and you're also trying to read upside-down... LOL
     
  9. White Trash

    White Trash Toyotaholic

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    No matter what trans you have if it is aluminum it has a national 223840. No need to put it on a lift just check that it's got an aluminum case.
     
  10. 84Toy

    84Toy Member

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    How can I tell if it has an aluminum case? The front half the transmission is caked with grime from probably all 236 thousand miles of use and the rear half is covered in oil.
     
  11. White Trash

    White Trash Toyotaholic

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    Grab a wire brush, rag soaked in degreaser or whatever and see if it's dark grey iron or shiny aluminum under the grime.
     
  12. 84Toy

    84Toy Member

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    I asked the dealership (supplied the VIN) they said my truck's supposed to have a 5 speed, so it's not original. They said the only other manual transmission option they had listed was the W42 4 speed.

    Anyway, I got the driveshaft out, now can someone tell how the f*ck I beat that goddamn seal out? I borrowed my friends rocker arm tool (that's what he called it) that's designed to remove seals, but all I did was end up bending the tool.
     
  13. 84Toy

    84Toy Member

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    And I believe the transmission is made of iron, because it's definitely not shiny...
     
  14. scrub88

    scrub88 Toyotaholic

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    Well are you set on fixing this transmission or maybe find a replacement one
    Have u tried a gear puller three pronged reverse claw
     
  15. 84Toy

    84Toy Member

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    Fixing the old one, why else would I be asking how to beat the seal out?
     
  16. scrub88

    scrub88 Toyotaholic

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    I would say put some heat to it but kinda dangerous you have a pic of the seal .its hard to recommend a particular puller . Without seeing how much space you have which is proably pretty small area
     
  17. White Trash

    White Trash Toyotaholic

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    Drive a large flat tip screwdriver into the edge of the seal and twist it. The first time usually won't pop it out but going directly across from the first one will do it.
     

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