Technical 1954 chevy truck torque tube to trans connection

Hi, I am working on a 54 chevy truck 235 6 cyl 4 speed. I am connecting the torque tube drive shaft to the rear of the transmission. I have the knuckled u joint piece that connects the two together.
My question is this. the knuckled u joint piece looks to just slide over the driveshaft inside the torque tube. BUT on the trans side the knuckled u joint piece looks to have threads on the outside of it which makes me think im missing something. the knuckled u joint piece slides right into the drive gear on the back of the trans, but does something screw these two pieces together? or does the knuckled u joint piece just float inside the closed gasket ed sphere that encases the knuckled u joint piece.
sorry for the non technical jargin, I couldnt find names on these pieces to talk more intelligently.

 

First of, pictures help a lot!

It's sounds like all is there l, but I'm not sure without pics.

 

photos as requested.

 

You're looking at the speedo drive gear. Split the joint. The yoke is bolted to the mainshaft in the trans w/ a 3/8'' SAE bolt & lock washer. You know about adjusting the pre-load on the ball, right ?

 

hi 3/8" SAE bolt and lock washer...check adjusting the pre-load on the ball???????

 

I "think" I understand the pre-load on the ball now after reading a little. I am still having issues figuring out where all the gaskets go. the large ones are obvious, but the smaller one w/ a taper on one end eludes me

 

Are you working with the '54 truck manual ?

 

yes 54 chevy 1/2 ton manual floor four speed

 

Sorry, I meant ..... are you working with GM Service manual for a '54 truck ?

LOOK at pages 7-11 and 7-12, under universal joint ball adjustment, see if that info will ***ist you.
http://chevy.oldcarmanualproject.com/shop/1954truck/54ctsm0711.html