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Old October 5th, 2010, 12:29 AM   #1
chevyk10
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Default Bad shift plugs??? F150 manual trans.

So I just got done installing a new clutch and finally got my trans back in my 1992 Ford F150 (5 speed Mazda manual tranny. T2A I think is the model). Its leaking really bad now whenever I drive it and its spraying trans fluid everywhere. I haven't been able to find the leak yet, but it looks like its coming from the very top rear end of the tranny. I also found out that I added about a quart too much trans fluid in, but I drained it out and its still leaking from up top. I've checked out a few sites that say that the "shift plugs" on the top of the trans are dry rotted and causing the leak. Anybody have any info on these like how to access them without removing the trans, and how to replace them / where to get them???
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Old October 5th, 2010, 08:54 AM   #2
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pull the carpet in the truck up, remove the transmission shifter, remove the trans plate bolted to the floor.

At that point you can get to them, but you could also pop the top off the trans to do it as well, and inspect your shift forks while you're in there.

Have fun!
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Old October 5th, 2010, 03:02 PM   #3
chevyk10
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Do I have to take the trans apart to replace the plugs? It looks like they just pop right out and you pop the new ones right in with some glue. Mine feel like they are really loose and maybe just need some glue to re seal them back in? I think I may have loosened them up when I was cleaning the trans with a wire brush when I had it out of the truck.
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Old October 6th, 2010, 07:33 AM   #4
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you don't have to pull the trans apart, just pop them out and pop in the new ones.

If you do a little research on the web, you'll probably find the part number for the metal replacement plugs.

When i had my trans out the last time, i actually tapped the holes and put in threaded pipe plugs. If memory serves me right, the diameter of the hole is perfect for a 3/8 npt tap.
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Old October 7th, 2010, 06:45 PM   #5
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If you try to glue them they will just start leaking again. Consider yourself lucky as most people never know they are leaking until the tranny fails.
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Old October 7th, 2010, 06:52 PM   #6
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Quote:
Originally Posted by chevyk10 View Post
Do I have to take the trans apart to replace the plugs? It looks like they just pop right out and you pop the new ones right in with some glue. Mine feel like they are really loose and maybe just need some glue to re seal them back in? I think I may have loosened them up when I was cleaning the trans with a wire brush when I had it out of the truck.
dont even worry about pulling them out. just take brake clean and clean up all the oil and junk from the plugs and put some black rtv silicone on them. silicone is cheap dont be shy with it.
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