Auto locking hubs
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New User
Joined: Jan 2007
Posts: 17
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From: Oxford,Ohio
Auto locking hubs
<TABLE><TBODY><TR><TD vAlign=top>I'm new to this type so excuse me for being a rookie but my F350 4x4 won't go into 4 wheel drive unless I get out and take them out of auto and put them in locked position and when I have it in lock mode it seams to work like it's in auto mode,when I put the switch on the dash in 2wd, it seams like it's only driving the back wheels,any help would be nice
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Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 5
From: Albuquerque
Your ESOF system is working as designed when you put the hubs in the 'LOCK' position. Keep in mind that when you put the switch to 2HI...the transfer case disengages. The front hubs are still locked, but the front drive shaft is not engaged at the transfer case. (hope that makes sense)
The real issue is the ESOF hubs in 'AUTO' are not working. Could be the vacuum lines, vacuum actuator, or the hubs themselves. If the hubs...then they need to be replaced and that is a Dealer only part...at about $250-$300 each.
Hope this helps...
biz
The real issue is the ESOF hubs in 'AUTO' are not working. Could be the vacuum lines, vacuum actuator, or the hubs themselves. If the hubs...then they need to be replaced and that is a Dealer only part...at about $250-$300 each.
Hope this helps...
biz
Senior User
Joined: Sep 2003
Posts: 411
Likes: 2
From: KS
Your AUTO hubs have failed. Possibly a vacuum leak.
Basically the hubs connect the front axle to the wheels.
Basically the transfer case connects the transmission to the front drive shaft.
Having the hubs in MANUAL/LOCK position does not determine the truck is actually in 4x4 mode. For the truck to be in 4x4 mode, 2 things must occur: the hubs must be locked in and the transfer case must be engaged. If one of these 2 does not occur, then the 4x4 system does not work. Since your hubs are now manually locked in, the dash switch determines the mode of 4x4 or 4x2. This part is normal.
For more info read my article titled 'The Basics of ESOF':
https://www.ford-trucks.com/forums/5...ml#post4027310
Basically the hubs connect the front axle to the wheels.
Basically the transfer case connects the transmission to the front drive shaft.
Having the hubs in MANUAL/LOCK position does not determine the truck is actually in 4x4 mode. For the truck to be in 4x4 mode, 2 things must occur: the hubs must be locked in and the transfer case must be engaged. If one of these 2 does not occur, then the 4x4 system does not work. Since your hubs are now manually locked in, the dash switch determines the mode of 4x4 or 4x2. This part is normal.
For more info read my article titled 'The Basics of ESOF':
https://www.ford-trucks.com/forums/5...ml#post4027310
Last edited by stevenn1; Jan 21, 2007 at 06:30 PM.
Thread Starter
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New User
Joined: Jan 2007
Posts: 17
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From: Oxford,Ohio
Thanks to you guys, I found a vacuum hose that came off at the bracket before the axle and put it back on with a clamp.Took me 10 minute and cost almost nothing.This couldn't have came out any better thanks to your help.I will be useing this forum again.THANKS again friends
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Lead Driver
Joined: Sep 2003
Posts: 5,844
Likes: 5
From: Albuquerque
Originally Posted by Steve Combs
Thanks to you guys, I found a vacuum hose that came off at the bracket before the axle and put it back on with a clamp.Took me 10 minute and cost almost nothing.This couldn't have came out any better thanks to your help.I will be useing this forum again.THANKS again friends
biz
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Auto locking hubs
New User
Joined: Jan 2007
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Originally Posted by muddytires
ok just a quick question. I have a manual 4x4 on the floor. Can i lock the hubs without engaging the 4x4 and drive off road till stuck. Then engage. If yes will it cause any problems ? is it a bad idea?
Lead Driver
Joined: Sep 2003
Posts: 5,844
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From: Albuquerque
Originally Posted by muddytires
Can i lock the hubs without engaging the 4x4 and drive off road till stuck. Then engage. If yes will it cause any problems ? is it a bad idea?
IMHO...as you see the conditions worsen...just engage 4Hi or 4Lo as needed...and do not wait until stuck in 4x2.
biz
New User
Joined: Apr 2015
Posts: 14
Likes: 1
Is this the same Issue?
Hi I am hoping to get some feedback on this.
I own a 2007 Super Duty 4X4 and my buddy says th locking hub is shot. Here's the symptoms:
* Won't engage 4WD
* When I tap brake at lower speeds I can hear a clunk on and off from same wheel
* Rattling from same wheel while driving city speeds with window open
Is there a chance could be other than Locking Hub?
Thanks so much!
I own a 2007 Super Duty 4X4 and my buddy says th locking hub is shot. Here's the symptoms:
* Won't engage 4WD
* When I tap brake at lower speeds I can hear a clunk on and off from same wheel
* Rattling from same wheel while driving city speeds with window open
Is there a chance could be other than Locking Hub?
Thanks so much!