What is this plug on 4R75W?
#1
What is this plug on 4R75W?
I've been trying to track down a leak on my 2004 with a 4R75W. I have changed the pan gasket (which was very rigid and inflexible) and cleaned up the pan mating surfaces. That fixed a lot of the issues but I still have a leak somewhere. There's a plug on the side of the transmission (see picture) that showed signs of weeping while the truck was running. (The picture is a 4R70W but it's the same plug). What is it for? Do I just tighten it or apply teflon tape? Any information is much appreciated!
#2
#3
Yes I was aware that the gasket was reusable but it was 13 years old and brittle as hell. I feel much better with the new one I put in there. The pan had never been off, still had the yellow plug laying in there. I just don't what that plug in the picture is for. Any diagrams or schematics around?
#4
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#6
It's odd that it's leaking. Be careful as that is a tapered plug in an aluminum housing.
IF its actually what is leaking then this is one place i would consider using RTV on a transmission. Again, IF it is the leak source then I think I would remove it, clean the threads up and very lightly coat it with RTV before reinstalling it. Keepig in mind that I'm installing a tapered plug into a weak cast aluminum housing.
D
IF its actually what is leaking then this is one place i would consider using RTV on a transmission. Again, IF it is the leak source then I think I would remove it, clean the threads up and very lightly coat it with RTV before reinstalling it. Keepig in mind that I'm installing a tapered plug into a weak cast aluminum housing.
D
#7
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#8
It's odd that it's leaking. Be careful as that is a tapered plug in an aluminum housing.
IF its actually what is leaking then this is one place i would consider using RTV on a transmission. Again, IF it is the leak source then I think I would remove it, clean the threads up and very lightly coat it with RTV before reinstalling it. Keepig in mind that I'm installing a tapered plug into a weak cast aluminum housing.
D
IF its actually what is leaking then this is one place i would consider using RTV on a transmission. Again, IF it is the leak source then I think I would remove it, clean the threads up and very lightly coat it with RTV before reinstalling it. Keepig in mind that I'm installing a tapered plug into a weak cast aluminum housing.
D
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#11
Several reasons not to use teflon tape with stuff like this. Particularly on transmissions and specifically where you are putting a tapered plug into a straight, brittle cast aluminum housing that is prone to cracking. Most I have seen split had teflon tape on them.
RTV, and not much of it.
D
RTV, and not much of it.
D
#13