Is there any speed restriction when shifting to 4WD (manual hubs)? Can't seem to find anything in the manual. Thanx.

 

If you read the manual, you're supposed to stop to shift into 4 wheel drive, hence the name, MSOS or Manual Shift On Stop.

But, generally you're upper limit is 50 to 55 MPH.

 

Really that depends on if your truck is still under warranty, if it is then there is no speed restriction, if its not, like mine, you stop and shift it in

 

In my manual says you can shift into 4wd as long as the rear wheels aren't free spinning, so if you are on ice and the rear tires are spinning faster than the fronts, you can't but as long as everything is moving the same speed your fine. They may be manual hubs but they are still shift on the fly, like the ESOF. The only time you can't do this is if going into low you will have to be stopped and in neutral for that. Usually as Redford said the upper limit is 55mph to shift on the fly into 4wd hi.

 

Redford has it right, with the electronic shift on the fly you can shift in up to 55mph, but with the manual shift lever you are supposed to be stopped. Many on here have found that you can shift in while moving without any issues though (as long as your front tires are spinning near the same speed as the rears).

 

Just read the manual says nothing about being stopped to go into 4 hi, you do have to be stopped to go in to 4 low. It says the only reason you can't go into 4 hi is if the rear wheels are slipping. In the esof section it says it you have to be going less than 55mph, but it says nothing about speed in the manual 4x4 section, just says hubs need to be locked and that the rear wheels can't be slipping. This would mean if you are alread stuck or on a slippery road and laying on the pedal with the rear wheels spinning fast and the front wheels hardly moving, would not be good on the T-case. Because you are trying to sync up something not moving or moving slowly with something moving really fast, that will cause problems, but as long as everything is going the same speed it, won't hurt anything. I have never had any problem shifting into 4 wheel drive at any speed, but I have never shifted in any higher than 30mph, I fiigure if you can go 55mph on a road you probably don't need 4 wheel drive. When I have shifted into 4hi in the past I have never heard it make any noises, or loud clunking, when moving it just shifts in and works.

 

I have manual shift transfer case. I can shift with no problems on the fly. Heck, I leave the hubs locked for that reason. Nothing grinds or bangs. I usually do it under 30 MPH and while coasting in gear.

 

I have a munual T-case and always shift while driving. Push in the clutch, let of the gas, shift it in(to reg 4x4) and off you go again. Never had issues with any of the 4x4's I've owned. No reason you can't, just don't shift into it while on the gas pedal.

 

Same as with ESOF. Cept, I never could run fast enough to jump out and flip the hubs so use ESOF, and stay nice and dry, warm, no muddy feet.

 

I leave my hubs locked all winter as well, unless on the freeway, that way I don't have to get out to lock them, just pull the lever and away I go. Just make sure the hubs are locked otherwise it will make quite a racket when you try to shift to 4wd.

 

sure does.........ESOF is sooooo nice.

 

i cant see any need for 4wd when going 55 mph. 4wd wont make you stop or steer any better, just accelerate. i guess alot of people dont realize that 'caus during a snowstorm its the suvs that are always in the ditch

 

then you drive mostly on pavement. On a mountain road with lots of small holes and loose stuff 4x4 helps smooth out the road and provides a more pleasant ride plus dosen't tear up the road like it does in 2x2. Remember, 80% of your pulling power is in the front so in 2 wheel drive you slip, then push to catch up, slip, push. etc. In 4x4 your mostly pulling so much less sliup so over time the road stays in better shape and your teeth stay in your head longer. And your right about stopping but it most definately improves steering when in the loose stuff.

 

Is 55 mph the fastest you can drive in 4x4? Not that I'm looking to actually see how fast I can go in 4Hi, just curious.

I used my ESOF a dozen times yesterday and the day before, about half with the hubs lock and half in auto. Never had a single problem with front locking in at all. And Wow I can feel the front tires grip when I flip the switch. In my Ranger the back tires would just stop spinning out when I put it in 4 and I could actually move on snow, but in this truck dang theres a real difference with those front tires digging in.

 

If you can drive faster that 55 why do you need 4 wheel drive?