Auto Hubs Not Working
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Laughing Gas
Joined: Dec 2005
Posts: 1,087
Likes: 189
From: Reno, NV
Auto Hubs Not Working
The auto hubs on my 2003 F250 are not working right. This past weekend, I tore them down, cleaned and relubed them. They seem to engage okay, but don't stay engaged. Could this be a vacuum leak? Would a vacuum leak cause
them to disengage?
them to disengage?
Tuned
Joined: Mar 2005
Posts: 493
Likes: 13
From: Aurora, Iliinois
Originally Posted by BadDogPSD
The auto hubs on my 2003 F250 are not working right. This past weekend, I tore them down, cleaned and relubed them. They seem to engage okay, but don't stay engaged. Could this be a vacuum leak? Would a vacuum leak cause
them to disengage?
them to disengage?
Scott
Post Fiend
Joined: Jan 2002
Posts: 5,859
Likes: 7
From: USA
The vacum does not hold the hub in the engaged position it just actuates it. if it is indeed locking then its not a vacum leak
There is a tsb out on this.TSB#04-18-5
The problem maybe too much lube in there now or you have bad needle bearings that have alowed the axle shaft to contact the hub lock mechanism.
Chk out the TSB
Rich
There is a tsb out on this.TSB#04-18-5
The problem maybe too much lube in there now or you have bad needle bearings that have alowed the axle shaft to contact the hub lock mechanism.
Chk out the TSB
Rich
Logistics Pro
Joined: Mar 2004
Posts: 4,221
Likes: 3
Always full of helpful info, Rich. I'd like to give you some rep but it says I need to spread some around before giving to you, again. 
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New User
Joined: Jun 2006
Posts: 16
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I have the same problem, I have Tracked it down to a vaccum leak, but am still trying to hunt it down
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Joe Kucinski
Senior User
Joined: Nov 2006
Posts: 174
Likes: 0
From: SFV, CALIFORNIA
I was looking at one of the advertisers on this sight and found steel braided vacum lines for the hubs (can't remember which one but i'm sure you can google it). Might be something you wanna look into.
Thread Starter
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Laughing Gas
Joined: Dec 2005
Posts: 1,087
Likes: 189
From: Reno, NV
Vacuum Okay
Well, I tested the vacuum line and they held constant pressure for over an hour, so it must be the needle bearings. Of course the local Ford dealer parts department isn't open on weekends.
As far as the Warn or Mile Marker hubs... I may end up going this route, but where I live it's very convenient to have the auto hubs as I can be in & out of 4WD frequently. Thanks to all for your input and advice!
As far as the Warn or Mile Marker hubs... I may end up going this route, but where I live it's very convenient to have the auto hubs as I can be in & out of 4WD frequently. Thanks to all for your input and advice!
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