Auto locking hub question

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Mar 17, 2025 | 04:21 PM

Gwilkrrs

Thread Starter

Fleet Mechanic

Joined: Jun 2002

Posts: 1,986

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From: maryland

Auto locking hub question

So my hubs stopped engaging automatically but would lock in if I turned the **** to lock. They had the dreaded broken plastic tabs. I bought new hubs from the dealer- ford hubs not aftermarket. I installed them this weekend and today I turned the **** to 4x4 and it didn’t lock in. I got out and turned the **** to lock and was able to get out.

so did I install wrong? I took old hubs off, turned new hubs to lock and slid them in and bolted them down
or do I. Have a vacume leak? And if so how do I troubleshoot this?

Mar 17, 2025 | 05:19 PM

Ltngdrvr

Lead Driver

Joined: Nov 2005

Posts: 8,477

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Wait...haven't I seen and answered this thread???

Mar 17, 2025 | 05:24 PM

Gwilkrrs

Thread Starter

Fleet Mechanic

Joined: Jun 2002

Posts: 1,986

Likes: 43

From: maryland

Quote:

Originally Posted by Ltngdrvr

Wait...haven't I seen and answered this thread???

I believe so. If I remember you helped me find the issue with the broken plastic-
i searched but it doesn’t come up-

I finally got the replacements and installed them and now here I am

Mar 17, 2025 | 05:43 PM

HorizontalHunter

Laughing Gas

Joined: Aug 2021

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Quote:

Originally Posted by Gwilkrrs

If you replaced the hubs and the symptoms didn’t change it wasn’t the hubs as @Ltngdrvr suggested in your other thread. You need a hand held vacuum pump and gauge to test the system. I would also make sure that the solenoid is switching to apply vacuum to the hubs when placed in 4Wheel drive.

Bob

Mar 17, 2025 | 08:11 PM

Ltngdrvr

Lead Driver

Joined: Nov 2005

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Quote:

Originally Posted by Gwilkrrs

I believe so. If I remember you helped me find the issue with the broken plastic-
i searched but it doesn’t come up-

I finally got the replacements and installed them and now here I am

No, not what I was talking about, you made duplicate threads, you have two of this same one.
https://www.ford-trucks.com/forums/1...l#post21520734