MUNCIE FILL PLUG

[ALLZS]

the fill plug in my 69 Muncie 4 speed is frozen in the case I cant get it to come loose any suggestions on how to get it out with out damaging the case

[69 Post Sedan]

Heat it up and melt wax into the threads.

Kurt

[SuperNovaSS]

The wax trick is a good one. Is the trans in the car or out? It is assembled or apart for rebuild? I have more experience with aluminum intake fittings which are a pain due to corrosion, etc. A trans plug should be similar. If intake plugs/fittings are tough I drill and cut them out.


Jason

[ALLZS]

THE TRANS IS IN A RUNNING CAR IT LOOKS LIKE SOMEONE HAS TRYED SEVERAL TIMES TO REMOVE THE SQUARE HEAD IS WELL ROUNED OFF DO YOU HEAT THE PLUG OR THE CASE ALSO WHAT TYPE OF WAX DO YOU USE

[69PACE]

you can buy a chunk of paraffin wax at the grocery store in the canning supplies section or at any craft store.

[luv2sixty9]

Use a large pipe wrench for leverage and it will come out. I had the same problem last week with a Muncie trans.

[jasonL78]

If the square nut is rounded and you can't get a pipe wrench on it. Weld a rod or small piece of flat stock steel onto the filler head. Use this for leverage to remove the filler plug. The little heat from the weld will help loosen it. You will need to buy a new drain plug anyway.

[marxjunk]

buy a large nut that the plug head fits in, mig it in center just take your time get a good weld, wait a minute, and 2 things happen, you get real heat on it and then you can get a boxed end on it, it will back right out. Ive done it on the floor, but a rack makes it less miserable..and it works...

[Joe69Camaro]

Usually the Hex head Is rounded off around the Bottom and not the top. There are 2 kinds of sockets that can be used in that case..
Turbo Sockets , and 8 pt sockets.
They All are best used when the trans is warm after a drive.

Rust grows on the steel or cast plug in the aluminum case thru condensation and expands stronger than lock -tite ..

Drilling both plugs are the best option in the end
If none of the others do it for you...

Never tried the Wax route..

[TDW]

I'ved used the wax on steam heater fittings that are a hundred years old with good results. The best wax that I've found for this is a "plumbers candle".

[Joe69Camaro]

I Will have to try that next time Tony...
Were those 100 year old steam fittings in a aluminum case as well ?
I always love new tech info !!
Sharing is good ..
Thank you...

[TDW]

The old steam radiators are cast iron. I have taken hose adapter fitting out of intakes using wax though.