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Ford Truck Club Forum > FORD F-250 | F-350 SERIES | SUPER DUTY > 2011-2016 Ford F250 | F350



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  #1  
Old July 23rd, 2014, 09:08 AM
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MR_Pete MR_Pete is offline
 

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Default 4 wheel drive

Wasn't sure if this was a good spot to post this, but since the truck is a 2012 F350 I figured I'd start here. My question is since these trucks have 4WD selector switches on the dash, why do they still have locking front hubs. I've used this truck in 4WD both ways and can't notice a difference. The OM doesn't really explain using the locking hubs one way or the other. My F150 just uses the dash switch to engage either 4H or 4L. Can anyone enlighten me on this? The salesman who sold me the truck couldn't really give me a straight answer when I asked him 2 years ago. More of a curiosity than anything.

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  #2  
Old July 23rd, 2014, 05:35 PM
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from what i can tell, the hubs in the "auto" position should lock when switched to 4hi-4lo. its for the "guys" that don't wanna get out of their truck and get their boots muddy locking the hubs. if used regularly the system works fine. the problem is when 4wd isnt used and the system starts to stick and doesn't engage requiring you to get out and manually lock the hubs, and/or once the hubs are locked, they will stick in the locked position even when switched to manual... the auto hubs are vacuum actuated so as the system ages, vacuum leaks can occur...

Aaron

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  #3  
Old July 23rd, 2014, 06:01 PM
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I get what you're saying, Aaron, but even when you get out of the truck to rotate and lock the hubs, you still have to turn the switch on the dash. Guess the manual hub is like a fail safe that they'll stay engage. Thanks for your input!

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  #4  
Old July 23rd, 2014, 06:22 PM
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im used to manually locking the hubs on my truck. havent tested to see if the auto function works in a while...

Aaron

'95 F150 XLT, reg cab long bed, swapped 351w,
4.56 gears, 4-link SAS, 14" coil overs.

SAS Thread!!!

'04 F250 Lariat, crew cab short bed 4x4 6.0L PSD, 3.73 gears, straight piped,
sinister coolant filter, welded egr, CAT EC-1 coolant, blue spring.
60 gallon fuel tank/tool box, SCT X4 w/IDP custom tunes, SOON TO BE STUDDED!!



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  #5  
Old July 23rd, 2014, 07:05 PM
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My FX4 150 is all automatic locking which has spoiled me a bit with staying in the seat to go 4WD. I generally try to activate the front differential before getting into a mess so I can keep moving.

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  #6  
Old July 23rd, 2014, 07:32 PM
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Exactly what Aaron said. The dash switch just activated the transfer case, but also locks the hubs in IF they're in the auto position. There is also the manual lock position in case the vacuum system fails or you use 4x4 all the time it's easier on the system.
Pretty neat actually


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  #7  
Old July 23rd, 2014, 09:08 PM
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Russo, what part of PA are you in?

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ASwaff400 , catmechanic07 , glc , JSoko , Moore1991bronco , MR_Pete , Russo2 , Stilllearning

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