Best way to fix leak in tranny pan?

Discussion in '80-Series Tech' started by Eric_FJ40, Jun 16, 2005.

  1. Eric_FJ40

    Eric_FJ40

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    I have had a tranny fluid leak for a while and finally got under there and cleaned everything up last night so I could watch it.

    This morning (Cruiser was not run and did not move) the leak was back and seems to be concentrated at one of the skid plate mounts. I beleive that it is possible that the welds where the tabs hold the captive nuts for the skid plate may be cracked and in turn - cracked the pan...

    Short of removing the pan and having it welded or brazed, what can I do? Will RTV smeared across the area hold it temporarily? Should I grind the paint away and put some JB Weld on it (also good for attaching sliders, I've heard :))

    Any thoughts or should I just suck it up and drop the pan?

    Eric
     
  2. Tools R Us

    Tools R Us

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    Best way is to drop the pan.
     
  3. Biff

    Biff

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    use this as a temp fix. Worked for me when I had a leak on my front diff.


    [​IMG]
     
  4. CharlieS

    CharlieS

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    One vote for suck it up and drop the pan. It can get expensive when things like that aren't lubricated...

    Charlie
     
  5. RavenTai

    RavenTai

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    you have a skid plate mounted to the transmission pan? :confused:, does not sound very sturdy.

    got a picture?
     
  6. Eric_FJ40

    Eric_FJ40

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    You don't???

    Looks like factory to me - has 4 U-shaped brackets welded to the pan with captive nuts in them. There is a slotted 'skid plate' that attaches to them. I took it off last night when I cleaned everything up - I'll see if I can get a photo of the mounting brackets on the pan...

    Maybe this is another thing that is unique to the 91-92 models?

    Eric
     
  7. beno

    beno Gihee Arakawa Moderator Supporting Vendor GOLD Star

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    Drop the pan...it's easy to do...worst case scenario is that you need to order a new pan. I recently replaced mine and it was a cinch to change. Contact Dan--IIRC $70 or so.

    Here is a thread I posted a while back on this:

    https://forum.ih8mud.com/showthread.php?t=40856

    Best.
    -onur
    Akron, OH
     
  8. Eric_FJ40

    Eric_FJ40

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    Thing is...

    I already dropped the pan when I first got the truck and did all the PM on it. I replaced the screen in there and would like to not have to get in there again (well - I will sooner or later to fix this, but would like to put it off some).

    And yes - I am positive that it is not leaking from me having it off! :)

    Eric
     
  9. RavenTai

    RavenTai

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    nope none on the 96, only skid plates I have are on the fuel tank, under the radiator and the transfer case,
     
  10. Eric_FJ40

    Eric_FJ40

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    Here is the offending leak.

    Best I can think of is that the skid plate took a hit and the force might have broken the weld and compromised the pan.

    Probably would never have happened without the "skid plate"...
     
    Last edited: Apr 2, 2006
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