99 F350 will only move in 4lo

[Areteracing]

I have a 99 F350, auto and manual shift T-case w/ 180K. Coming down a hill with a trailer the other day in OD, it seemed like the tranny popped into neutral. Tried 2nd and drive again but I had nothing. After pulling over at the bottom, I put the tranny in park and it ground like something wouldn't stop spinning inside. I had this problem several years ago, and the truck would only move in 4lo (didn't need to lock the hubs) I tried this again and it was the same deal. The truck moves fine in 4lo, but not 2hi or 4hi. I'm sure I got ripped off last time as they charged me $1600.00 to fix the transfer case, saying it was a common problem in the powerstroke T-cases. I was busy with work and didn't care what it took to get it going. Now I do care and have the time to pull the case out and see what's going on. Has anyone heard of this or had this issue? Thanks.

[jetskier]

The range fork pads fell off. I just spent $630 at the dealer (less than an hour ago) to get the updated mainshaft/range fork/pads/sleeve and some other parts.

My truck still drives in 2H & 4H, but I cannot get it into 4L without breaking the shift rail.

[jetskier]

see also this....exact symptoms.

Transfer case quit transferring: Advice needed - Ford Truck Enthusiasts Forums

the kit is 1C3Z-7A082-AA. It includes an oil galley in both the mainshaft and sleeve to lube the fork and pads.

The trans/transfer case gasket is E7TZ-7086-A ($7 max).

[Areteracing]

Thanks jetskier. Kind of a bummer I already have the updated kit in (I assume from what they installed last time). Guess I'll pull the case and see if that's whats going on again.

[jetskier]

It could have been a rebuilt case without the updates. Who knows. The link I posted has the comparison of the mainshafts on page 3. The range shift sleeve is probably stuck in the planetary.

Later this week after I get a transmission adapter for my floor jack, I'm going to pull mine apart. So far, I've been lucky mine's stuck on the other side and I can use it.

[jetskier]

Oh, the kit doesn't include the new range pads. I had to order those separately. Both were less than $6. You'd think the kit would include these.

[Areteracing]

Pulled the T-case. The range fork was trash. Almost looks like the pads were never installed on it. It did have the update kit in it though so that's good. Ordered the parts and should have them Monday. I'll post pics later.

[Areteracing]

Bringing this thread back as I just had the same thing happen again. Haven't pulled the T case yet, but this will be the third time for the same repair. Any ideas if there could be a cause for this?