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post #1 of 9 Old 05-24-2013, 04:34 PM Thread Starter
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How to run F250 in 4x4

This is a total n00b question, I know. But this is my first 4x4 and I'm kinda curious on what I should and should not do when it comes to the 4x4.

So I've figured out that 4H on dry pavement and tight turns is bad. Some googling to figure out why that is and I"m realizing I better start asking some questions before I break something.

I have an 2007 F250, manual hubs. I got the hubs thing down, that's easy enough but I have questions about how I get into 4H and 4L properly.

Obviously if I'm stopped, its easy enough, but can I keep the hubs locked (when I'm going to expect to need 4H in the near future) and shift in/out of 4H on the fly? Or do I need to stop moving first, be in nuetral or anything else?

What about 4L? I know its a full stop to get into that one, but do I need to be in neutral, drive or park in order to properly get into 4L?
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post #2 of 9 Old 05-24-2013, 04:57 PM
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Your correct, it is hard on stuff when your in 4x4 and not on a slick surface. If you expect to be in 4x4, you can lock the hubs in advance and keep the transfer case in 2x. This will increase the drag slightly due to the front axle turning so expect to see slightly lower mpg. As for switching into 4x4 high, if your hubs are locked in you can switch while moving as long as both the front and rear are moving at the same speed. Otherwise 4x4 high, you should stop, lock hubs then flip the switch or pull the lever. For low range do the same but put the truck in neutral first.

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post #3 of 9 Old 05-24-2013, 05:01 PM
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Well I always stop to go into 4Hi and lock the hubs just to be safe unless you manual or whatever says to you can shift on the fly.


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1999 F350 ecsb 4x4 130k miles.
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1997 F250 rclb 4x4 gasser
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post #4 of 9 Old 05-24-2013, 05:03 PM
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JSchuricht beat me to it


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Jarrette
1999 F350 ecsb 4x4 130k miles.
Mbrp 5" exhaust
TS 6 pos chip with Gearhead tunes
Auto Meter CS Series gauges (boost, pyro, trans temp)
S&B Intake
Aftermarket wastegate controller

Mods to come:
Crank case vent
Hutch and harpoon mod (if not already done)



1997 F250 rclb 4x4 gasser
Going to do a 12v swap in it tho
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post #5 of 9 Old 05-24-2013, 05:06 PM Thread Starter
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Found an online copy of the manual at http://www.motorcraftservice.com/pub.../07f23og2e.pdf

Page 192 says that if I have the auto-4x4 stuff I can shift into 4H up to 55MPH, but for the Manual (MSOS) I have to be under 3MPH. I can understand that for liability reasons they may be over cautious with the manual version so that they don't have to answer for dumbasses that yank the lever while spinning the tires or whatever, but what's the real world answer?

I can't imagine that I can't flip between 2H and 4H with the manual system if I'm careful to have all 4 wheels moving in the same direction and speed.
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post #6 of 9 Old 06-21-2013, 03:05 PM
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I have had auto 4x4 in my 2010 Raptor and my 2004 F250... I would HIGHLY advise you come to a stop before shifting... you will feel the front axle engage and If the conditions are right... it may 're-direct the truck'.......
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post #7 of 9 Old 06-21-2013, 03:17 PM Thread Starter
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Quote:
Originally Posted by mustangmike6996 View Post
I have had auto 4x4 in my 2010 Raptor and my 2004 F250... I would HIGHLY advise you come to a stop before shifting... you will feel the front axle engage and If the conditions are right... it may 're-direct the truck'.......
So I'll read that as "Yes you can, but I wouldn't". Which is probably excellent advice.
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post #8 of 9 Old 06-21-2013, 03:20 PM
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most all here have the Auto hubs and ESOF so you may be waiting for a real world user response?

not sure on your manual Hub and transfer case max speed? but it's the same transfer case

minus the ESOF motor and replaced with a lever I imagine if you were smooth you could do the same 55mph and even that has a saftey margin


but I won't guarantee anything LOL

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post #9 of 9 Old 06-21-2013, 04:04 PM
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I have manual hubs and transfercase. In the winter, I keep my hubs locked (unless there is a long spell of weather which warrants unlocking) and shift between 2HI and 4HI as conditions dictate, speed being irrelevant. Going into 4LO is done at a stop.

2004 F-350, 4x4, SC, LB, 6.0PSD, 6spd
Changed some stuff
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