Wednesday, 19 Aug - Nice thunderboomer is rolling past, good cool outflow. Friend needed some work done, and it's not too hot to do it!! WOW. It's still August, and I didn't drown in sweat out in the shop! Win.
An old tractor needs a new plate for water temp guage.
Friend got the plate made, and wondered if I could help with the threaded part. Oh boy.
Drilled a scrap to 9/16, next is bore to .588, then try and thread it to 5/8x18... Only need 3/8 of an inch of threads.... Fingers crossed... First try was toast. Not gonna work. I couldn't be sure if I was using leaded steel or not, and that don't weld so good.
|I can still hear the music and the announcer...
I remembered watching a "How It's Made", manufacturing air tanks for truck brake systems. They had this little part, with pipe threads in it... Hmmmm.... Found out it's name is thread-o-let.
I was down in the oil patch, so I stopped by a valve supply house, and they had some. Manger GAVE me one that is a 1/4 NPT and caked with dust. So, I'm a customer for life....
Okay, let's go.
Saturday 22 Aug - Outside is tapered, can't grip that. It took 90 minutes to make the mandrel to hold this thing. No tooling I needed was close to the lathe, and I'm rusty as a neglected tap wrench. Finally got this thing done, threaded 10-32 on the end, and starting turning the bevel-o-let into a cylinder. Missed my size by 2 thou, and that came back to haunt me.
I have some 5C collets (not a complete set) and a collet block because of a gracious benefactor and mentor. I missed sizing this for the one collet I had that was close, so it would be a booger to thread, but not a major problem.
Temp sensor has a 5/8-18 thread, and, amazingly, I have a tap that size from the same benefactor / mentor. Blew a 9/16 hole-o-let, cleaning out the old threads, and the proper size for where I'm going is 37/64" Now, really.... What are the odds of having that....
|I shoulda bought a lottery ticket too...
Thanks again to Mr. S. I owe that man a lot. He has invested a lot in me and in my shop. Thank you. I wouldn't be near where I am today without you.
Got the threaded collar done, and was thinking about it last night as I'm drifting off... There is a bevel seal on the sending unit, and the collar needs to be centered over it. Hmmmmm..... Ordering up a centering plug.
Got that turned down today, and ready. Just need to grind the screws to length, and it's done.
Plug dimensions follow. And I did get pretty close to hitting them all. The plug needed a bit of polish to slide into the hole and collar.
Went with a 10-24 screw instead of the 8-32... Spec change in the field, no change order needed... heh.
Man, is it ever good to be in the shop. And with a cool front moving south and bringing rain twice in a week lowering the temps into the mid 90's.... Feels like Christmas in August.