Plug for clutch bell housing ?

[Lumbar Jack]

Hi All,
Newbie here.. just bought a 1952 M37 from a fire department. It has an open, unsealed port in the bottom of (I think) the clutch bell housing. Thread size appears to be 1"-12 but am not certain. Why does a dry clutch have this port - for inspection? This bell housing is supposed to be dry... right? I assume I just need to find the right plug and insert it. Can anyone explain this & tell me where to buy the plug? (I got a "pan drain plug" for $8.00 from Midwest Military, but the diameter is slightly too small, I guess it's for the oil pan).
Thank you!

 

[John Mc]

That plug is only installed when you are doing fording operations. If you are not driving through deep water, it is left open. I dont have the plug for my truck, but I believe it was stored in the glove compartment - worth a look to see if there is one there on your truck.

 

[Lumbar Jack]

That plug is only installed when you are doing fording operations. If you are not driving through deep water, it is left open. I dont have the plug for my truck, but I believe it was stored in the glove compartment - worth a look to see if there is one there on your truck.

Oh.. that's very helpful, THANK you!

 

[John Mc]

Freaked me out the first time I was poking around under there.

 

[deathrowdave]

As best as I recall it’s a 3/4 NPT plug , easy to locate if you want one

 

[G744]

There was a MWO to fab a bracket and install same in the glove box to store the plug there.

I've seen a couple of them over the years.

DG