doubleclutchinweasel

Don't know about the 79. But, on my 70, the volt, temp, and fuel gauges were dead until the key was turned on. The schematic shows power coming off the key switch, to the low air pressure switch, and then daisy-chained to the fuel, volt, and temp gauges. Does not show a relay in that particular circuit (low amperage draw). But, that is nearly a decade older than yours.

If your "privacy fence" is made of old car hoods...

Good deal!

Yeah, I prefer to leave my tools right where they are while I am using them. Put them up when everything's done. But, sometimes the blamed things grow legs and wander off! The older I get, the worse it seems to be getting. Can't wait to see how it is next year!

When my son's Triumph Thunderbird came due for valve adjustment service, we bought the on-line factory service manual to get the procedure. As we did it, I took detail photos of every step. Then, I cut and pasted the instructions into a word document and pasted my pictures in with the instructions. Where something didn't make sense, we changed the sequence or the wording to make it work better. We added notes, hints, and warnings as we found things along the way. What we ended up with was a super-detailed (and accurate) how-to book to do that job correctly. I was trying to find a sample page on here, but I must have put it on my laptop at home. I guess all that time I spent years back writing training manuals paid off! In other words, I know how you feel! Stuff is hard without something to reference!

Well, O'Dog...

"If your military career ended in the recruitment office..."

Did the trough run around the top of the case and drip down on the gears? I may be thinking of some other gearbox, though. Old age, you know?

Awesome pictures, D! That should help him out a good bit.

I’m a big fan of carriage bolts and nylock nuts!

Welcome to the world of purebred mutts! Awesome R model.

That's pretty interesting.

Yep. The Ford and the Mack had a different sound than, say, a 903 Cummins. Even the Cat 3408 didn't sound quite the same.

Incidentally, the Triplex section might be of some use to you too, since it shows only a "married" box without the break in the picture for the 5-speed. I'd say the only difference between the Duplex and Triplex would be the rear box. The front mainshaft would likely look the same. Best of luck to you, LTK! Weasel out...

I guess it looks kinda like this with the 5-speed section removed! The instructions are not clear on setting the mainshaft end play at the 2 indicated points. Maybe it would be obvious if you were in there. Almost looks like the main box and the aux box are set separately. But, it looks like the countershafts are all set from the same point on the aux box.

Were you able to access the PDF file from the link I sent you? I can always post some individual pages on here if I need to.

Yeah, this PDF file is a little rough! My physical manual is far easier to read. If you have any specific sections you would like to enhance, let me know. Maybe I can take a picture of them and send it to you. I guess end play on the mainshaft makes sense. After all, there are several shafts in the center of that box (main input shaft, main mainshaft, aux input shaft, aux mainshaft). Might want little clearance between the ends of each one! Technically, I guess the front mainshaft is the rear input shaft. Sorry about that!

I tried to upload that manual to the WIKI section, but it is too big.

When I looked at the drawing this morning, it looks like it actually has an "END PLAY" spec on the MAINSHAFT and a "PRE-LOAD" spec on the COUNTERSHAFT. But, I have no personal experience with this transmission. So, don't take my word alone for it.

But, here's a teaser...

I sent you a PM. Contact me when you get it.

Uhhhhh....yeah.

I meant to look in one of my manuals, but forgot. Wait, I may have something here at work. Let me look and get back to you.