Roger that.

Thank you for the advice.

 

Part number 7A044 should be centered on part number 7105.

 

I may not be as educated as some of these other fellas, so my opinion may not count much.

But I have a sneaking suspicion that you chipped a gear tooth, and those pieces got into the rest of your assembly when they bounced and flung around everywhere, and that did something unfortunate to your synchro assy, and that caused your trans to "freeze".

I have a feeling your synchro didn't simply freeze first.

Here was my adventure from 2017: https://www.ford-trucks.com/forums/1...d-reverse.html
I never stopped driving the truck with the chipped tooth. I changed the oil at least 3 different times and never found anything considerable other than small bits of metal.
How do I know I chipped a tooth?
Two months ago when I swapped my engine I changed the trans oil and found the entire chipped tooth, for some reason I never found it when I fished around the first few times(i did fish for it initially).

Two years ago I had a weird situation where my trans was becoming difficult to get OUT of some gears, and it was frustratingly never resolved, I simply kept driving it until it went away and was forgotten(the total disappearance of the shifting-out-of-gear issue took at least 4-6 months to mysteriously go away); I suspect the piece of chipped tooth got wedged in the shifting gears--somehow didn't frag my trans--and fell onto the floor of the trans where I'd later find it. I have no idea how that entire chunk of gear tooth could have avoided me otherwise.

This probably sounds unreasonable to people who know these trans better, but I don't know how else all of these things could have happened the way they did.



Moral of the story: You probably unknowingly chipped a tooth at no fault of yourself, and those fragments broke the rest of your trans when they "got in the way".

 

Thank you for the advice.

 

Phantom of the Phorum - Notice in your picture that the 'low and reverse fork' is positioned with the 'flat side' towards the rear of the transmission. The Ford manual says "CAUTION: Position the low and reverse fork with the smooth side of the fork toward the gear, or the transmission will not shift into first speed."

Is your picture the actual position? Does it work?

Thank you.

 

Yes, the picture is correct. My best guess is that the manual should say "Rear" not "Gear". It wouldn't be the only typo in the book.

Here is a picture with the first/reverse fork flipped:

Junk transmission

As you can see, the shift fork would make contact with the inside of the transmission case before the reverse gear is fully engaged.


The correct installation:

Ignore the red box

The shift fork and the first/reverse sliding gear are at the back of the transmission housing and the reverse gear is fully engaged.

 

Effie Trucker thank you very much.

Thanks to all for the advice!