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Old March 28th, 2021, 04:45 PM
Wesker86 Wesker86 is offline
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Default Transmission Question

I noticed while working under my Jeep that there is a threaded hole that looks like it should have a drain plug in it. It is right behind the oil drain plug on the front end of the transmission. After some digging I figured out that it is not the tranny drain plug, and now I'm at a loss. I found a size M25 drain plug that is the right diameter but the wrong threading for it, and even if I can find the right size plug I'm not sure what fluid goes in that area or how to fill it. Thoughts?
In the attached photo I believe the red arrow is the tranny drain, the blue is the oil drain, and the white is what I'm looking for.
Thanks!
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Old March 28th, 2021, 06:59 PM
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m38inmaine m38inmaine is offline
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That is for a plug for deep water fording, unless you are fording water it should be left un plugged to let oil drain from a leaky transmission or rear main seal.
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Old March 28th, 2021, 07:58 PM
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brute4c brute4c is offline
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As said above correctly, that is the bellhousing of the trans and should remain open except if you plan to ford deep water. Once fording is done, remove it. I kept that plug in the glove box in a bag...it is a standard pipe plug.

The rear main is a known leaky point of the 230 motor...front seal of trans, not so much but has been known to happen...
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