NP 205 fill plug?

[Cadden]

here's another fun one. I've searched high and low, can't find the right type plug for this. I'm assuming it's the fill plug?

Was missing when I got it.
Thread pattern looks to fine for NPT

In one of the pictures is a 1/2 npt plug and its way to small.

What size plug and thread pattern should this be?

 

[Cadden]

Wait a tick, is this the speedo cable spot?

 

[Bent77]

Where the rag is? Kinda looks like it. The fill plug is in the middle of the back side, 1/2” NPT

 

[Bent77]

Wait a tick, is this the speedo cable spot?

On the top of the speedo housing, that’s a breather

 

[Cadden]

Ahh gotcha. Idk why it just clicked after I posted lmao.

 

[Bent77]

No worries

 

[Cadden]

So I guess my question is then, since the end of the speedo cable needs that piece to thread onto, what's the name of it?

 

[mechted]

https://torqueking.com/category/1973-1991-gm-np205-speedometer-parts/
Can find them on ebay too... just have to look for a while. Pretty sure its a shared part with NP203's as well.

ORD makes plugs if you arnt going to use it for some reason. https://www.offroaddesign.com/transfer-case/np205-parts/speedometer-plugs.html

 

[Cadden]

Hmm I swear I saw a piece like that in my last box of loose parts. I'll go thru it all later tonight
Well thanks my dudes. I think I can get it figured out from here.

 

[Cadden]

Ah crap. I think I tossed it! Now that I've seen a picture of what it looks like I remember thinking it was a part of the brakes or something but I had all new brake parts

 

[nvrenuf]

I might have one, I’ll look tomorrow.

 

[Cadden]

Here's what i found for reference.

 

[Cadden]

And here's looking down the hole on my transfer case. Am I seeing this right, I'm missing the shaft with the gear too arent i?

 

[Cadden]

Nope false alarm I never had the pieces. I just found the piece I thought it tossed and its for sure a brake line adaptor of some sort.. Apparently the jimmy originally had a Dana 20 transfer case but he got rid of it for this np205

So it looks like I need both the gear and the adaptor that screws into the end

 

[Cadden]

Ok, supposedly there's supposed to be a letter stamped somewhere on this np205.
Its not on the serial plate that I can see, where should it be so I can find the proper speedo gear stuff.

This page says its on the side but I'm not seeing it yet. Granted this tcase is covered in crud.

 

[Wes Harden]

the letter is stamped on the pencil gear it shelf not on the tcase. All you know for sure is you have 6 teeth on the drive gear. going to take some math, need tire size, and ring and pinion ratio to figure out. I am clueless where to start thou. I am sure some here will know.

 

[Cadden]

Ohhh damn. That makes sense now

 

[Cadden]

Well tire size are 35's. That's all I know off the top of my head lol.