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My 2006 f250 4 wheel drive is not working in auto lock. I have to manually lock the hubs. I put a Vacume pump on the axleit self and I can not get any vacume how do I repair it?

What inside the front axle makes the 4 wheel drive lock in auto matically

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Posted on Jan 02, 2017

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SOURCE: 1998 ford ranger 4x4 Front Axle hubs will not engage

I found a website that explaned that you can remove the hub and dust cover, inside is a spring which holds the hub out, removing this spring and replacing the rubber dust cover and hub will lock your front hubs in continious. as is done on later models, This has worked for my 98 4wd

Posted on Dec 18, 2008

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SOURCE: 4 wheel drive engages but hubs are not locking in

chances are that your one of your auto locks have when out on you you can replace them with the manual locking type if you dont mind getting out and locking the hubs in. and a plus to manual locks is that they are much much stronger

Posted on Apr 21, 2009

SOURCE: When in auto hubs the 4 wheel drive doesn't work

They are operated by vacuum. Check to make sure the vacuum lines are connected and not ripped or anything. If that checks out fine, remove the vacuum line from the hub and apply vacuum to the hub, if the hubs lock then the problem is in the vacuum line or switch.

Posted on May 09, 2009

  • 333 Answers

SOURCE: Replacing front wheel hub assembly on 2006

Caliper mount bolts are 74 ft/lbs
Driveshaft axle nut is 177 ft/lbs
Hub and bearing mounting bolts are 133 ft/lbs

Posted on Sep 10, 2009

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kirkx
  • 2019 Answers

SOURCE: 1998 gmc sonoma 4 wheel drive not working. Front

Watch what clinks?
You should see the vacuum servo move the linkage. The servo could have a leak. You can connect your own hose to the servo temporarily, and simply **** on it, then plug it with your tongue. After about 15 seconds, if it holds that vacuum, then no leaks.
The linkage could also be binding. Transfer case could also be binding. Try helping the servo by hand. Careful when under the vehicle. Chock wheels and make sure in neutral while underneath.

Posted on Mar 04, 2010

Testimonial: "Would like to say hit my problem on the money checked actuator diaphram was torn so fifty dollars and 40 min later problem fixed . Thanks ."

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1 Answer

Can't get my 95 Geo Trackers 4WD to work. The indicator light works still but the wheels themselves won't engage. Can anyone plz help me out with what might be my problem?


For Trackers (and Sidekicks) of this era (1989 to 1998) the front axle locking device is a locking hub on each front wheel. (There are no actuators until the model change in 1999.) Locking hubs come in two flavors, Manual and auto locking hubs. A look at the from wheel should tell you what you have. Manual hubs have a knob like lever with the word "lock" and "free." Auto hubs say "Auto-Locking" right on them. Both types of hubs require servicing periodicity. (Normally annually.) This means removing and disassembling. Then cleaning and light greasing before reassembling. There are some good videos on the web on how to service the manual hubs. Auto hubs are a little harder to ensure they are working properly, but some people like them. (Not me.)

Please note two things:
1. Due to differential action, BOTH hubs need to be locked for any power to be applied to the front wheels.
2. Trackers of this era are PART TIME 4x4, NOT all wheel drive. They have nothing providing for different wheel speeds front to back like a center differential. This means they should NOT be used on non-slippery surfaces like dry pavement. Beside causing handling and braking issues, it can destroy your transfercase driving on dry pavement in 4x4 due to what is called "driveline wind up".

PLEASE if you do not understand this, look it up... if you still do not understand, ask and do not use the 4x4 until you do.

Feb 18, 2015 | 1995 Geo Tracker

2 Answers

My 4 wheel drive quit working in my isuzu trooper i can see the front drive shaft turning but the front tires are not spinning


do you have auto locking hubs? if so save yourself the hassles i did not and buy a decent set of manual hubs.my 1989 4 wheel just gave up one day..no wear on axles..front drive shaft spinning but no action..i replace auto locking hubs and re assembled to no avail...no answers why either...have pulled it all apart and put back together many times and no change,only to be told to put manuals in and live happily ever after!!done ....and done!

Jan 08, 2011 | 1989 Isuzu Trooper

1 Answer

Can i get rid of the vacume part of my hubs i have hubs now that are lock and auto because the vacume seals keep going bad.


If you lock them , doesnt that work? I though tthat AUTO was to keep you from having to go outside and manually locking them, so locked is locked....right?

Dec 01, 2010 | Ford F-250 Cars & Trucks

4 Answers

What is auto 4 wheel drive?


Auto 4 wd is when the Silverado's PCM takes readings from the front and rear driver shaft and when there is any detection that the speeds are different. The Auto 4WD will activate the transfer case to lock it self to 4wd until the front and rear drive shaft are running at the same given speed of rotation.

Thank you for using fixya

Aug 24, 2010 | 2000 Chevrolet Silverado

1 Answer

4 wheel drive engages but hubs are not locking in


chances are that your one of your auto locks have when out on you you can replace them with the manual locking type if you dont mind getting out and locking the hubs in. and a plus to manual locks is that they are much much stronger

Apr 20, 2009 | 1998 Dodge Ram 1500 4WD

1 Answer

When in auto hubs the 4 wheel drive doesn't work


They are operated by vacuum. Check to make sure the vacuum lines are connected and not ripped or anything. If that checks out fine, remove the vacuum line from the hub and apply vacuum to the hub, if the hubs lock then the problem is in the vacuum line or switch.

Apr 08, 2009 | 2006 Ford F 350 Super Duty

1 Answer

My 4x4 won't engage except if u get out and lock the hubs on my f-350 2006


you must have those vacume operated automatic locking hubs that can be manuely locked.switch the truck to 4x4 operation. and get behind the front wheels ,pull of the vacume hose at the back of the spindle to see if engine vacume is getting down to the hubs at all.with the truck running you should have 18 to 20 inchs of vacume at each hose. if no vacume is felt. check the soleinoid behind the right head light for switching vacume down to the spindles. if there is vacume the problem is in the hubs themselves.

Mar 29, 2009 | 2006 Ford F 350 Super Duty

1 Answer

Superwinch locking hubs


i would think so other wise you will have a large vacume leak and truck will run bad too.

Feb 01, 2009 | 2000 Ford F250 Super Duty Crew Cabs

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