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SOS Removed the wrong fill plug for transmission fluid change

CommyO

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Dumbass friend was changing his transmission fluid and removed the nut opposite of the fill plug (like on the opposite side on the transmission where the fill plug is supposed to be if that makes sense)

Said he felt a pressurized air get released and now the nut just spins into place. Now he doesn't know what bolt he took out and can't figure it out. 13mm bolt

2013 mustang gt with mt82

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ice445

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Probably something that's important, like a bolt to hold the shift rail or something. Rather unfortunate since it will probably have to come out and be opened up to correct this
 

coyote550

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Looks like the reverse idler gear bracket bolt. A bit hard to see from the photo. The trans likely needs to come out. Wouldn't mess with it and take it to a transmission shop.
 
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GrabberBargeCaptain

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Damn. That was an expensive mistake.
 

coyote550

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