Electronic shift on the fly is the way to go.
I have used mine extensively never had any problems.
But hey if you like doing things the hard way go manual . ;-)

 

I like Page 3 so far. Page 2 flew right over my head, but not before it whacked me hard enough to give me a migraine!

 

I think we're all getting confused in the terminology. Don't forget that the t-case has TWO output shafts. The input and REAR output shafts are locked together when the reduction hub is in the forward position. When the reduction hub slides back in 4 low, THAT's when the planetary gears are engaged. All 4 hi does is lock the front output to the rear output. (and engage the front axle, of course)

Keep in mind that the reduction hub locks the input shaft to ONLY the rear output shaft. It has no bearing on the front output shaft.

I wish y'all could see the pictures... they make this discussion really clear...

-Joe-

 

Joe, that's all I was asking. Apparently this isn't the normal T-case I'm used to (i.e. there are planetary gearsets like in an automatic). My point was that no different gear is engaged when placed into 4-Hi as when a reduction gear is in 4-Lo.

If we were to disable the chain sprocket and the front axle, pulling into 4-hi would do absolutely nothing, no fork would shift anything into a different gear. If 4-hi does nothing more than what you say, than in 4x2 the 4-hi gear is always engaged (it is direct drive).

I had no idea about the planetary stuff, I'm just getting too old for this....I feel like Rip Van Winkle, went to sleep with knowing one thing and wake up and a whole new thing is going on...I probably should keep my mouth shut more around here...

 

No problem, there, Rip! Hope we finally got it straightened out!

I was able to print the diagrams today... I'll try and scan them at work and forward them to you guys...

-Joe-

 

Joe

Do most systems use planetary gears now? How exactly does that work (I understand how autos work, I presume based off that principal). What I can't figure out is why they would switch to planetary, when the part-time transfer case system with your old cluster shaft arrangement is so simple, compct, and basic. What's the advantage?

 

From what I understand, the planetary gears are only used for the reduction in low range. By using a 1:1 ratio (i.e. direct drive) for 4 hi as well as 2wd, there is no gear change necessary in the transfer case when you shift on the fly.

As for your question, I dunno... I'm just starting to learn about the older style 4wd setups... need to do some more research first...

-Joe-

 

JMC

I've re-read Joe's posts and your post about the ESOTF and MSOTF, and completely understand now. I seriously wasn't trying to be obtuse (which is what I said in my original post re-engaging the topic). You would have to admit if these were not planetary-gear type T-cases I would be right (rather than 1/2). And as I said, I was completely unaware the F-150 used a planetary system.

Would the towing restrictions be the same for a manual tranny with ESOTF? I know those aren't common, but I think there would be no such restriction (i.e. it won't hurt a manual to be spinning around, as it just slops oil all over the place under normal function anyway).

I'll ask you the same thing I asked Joe, why the switch to planetary? What's the big advantage?

Thanks for the insight....

 

The towing with a manual-manual combo should be unrestricted... same with a manual trans. However, I believe that with the manual t-case in neutral and the output of the trans disconnected, the mileage may not accumulate on the odometer. However, even with the esotf, as long as you have a manual tranny in neutral, it will be fine. (the miles will just accumulate, I think)

-Joe-

 

Joe,

On the 4x4s the milage is taken from the T-case.

JMC

 

Input or Output of the t-case? (I should just look it up at home)

I'll bring that printout too... I wish my scanner was working...

-Joe-

 

Joe,

Output.

Jmc

 

JMC

Since there is no neutral in the electric version they obviously must be different transfer cases?

Thanks
Pete

 

No, they are the same t-case, just with a different actuator (i.e. one uses a lever, one uses a motor with a feedback loop through a controller). They are both Borg-Warner 44-06 Transfer cases, only one is shifted manually, one electronically. Internally, they are the same.

JMC, just figured out why Chris's t-case was leaking....

says it right in the manual...
"The unit is lubricated manually by a positive displacement fluid pump that channels fluid flow through holes in the rear output shaft."

Now it makes sense....

-Joe-

 

OK... Glad you can say that, I sure can't. I would go back and reread all that but it would take a week to understand. I think I got a developed head with an undevloped brain casue all I hear now is rattles. Maybe someday the light will click on?