89 full size 4x4 issue - Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars
Ford Bronco Forum Forum for discussion of the Ford Bronco

LinkBack Thread Tools Display Modes
post #1 of 2 (permalink) Old 12-09-09, 06:16 AM Thread Starter
Registered User
Join Date: Dec 2009
Location: massacheusetts
Age: 31
Posts: 2
confused 89 full size 4x4 issue

i have a 89 full size bronco with auto locking hubs.i woke up this morning and found that new england had dumped 6 inchs of snow on me.put my truck in 4wheel drive and it will not engage.tired backing up a distance of about 30 feet and the same in foward and nothing can any one help me?

bigblackbronco is offline  
Sponsored Links
post #2 of 2 (permalink) Old 12-11-09, 08:00 AM
Registered User
Join Date: Jul 2008
Posts: 118
Re: 89 full size 4x4 issue

First thing is to verify that your 4x4 is working. If possible, put a mark on your front drive shaft, drive the vehicle in 4wheel, then inspect to verify rotation of the front drive shaft.

If it is indeed the locking hubs then, there are a few things you could try. First off, i'll just say that this could be due to improper lubrication of the hubs, which may now have frozen. The best practice would be to dissasemble the hubs, and lubricate with first ATF to clean, then get the special low viscosity grease for auto hubs (from ford if possible).

With out wanting to do all of that, you could try simply driving the vehicle for several miles at low speed to hopefully warm up and loosen the front hubs. beware though as you don't want them to engage while at higher speeds.

Or you could try jacking up the front end and rotating the front drive shaft by hand while having a friend lightly tap on the front hubs with a rubber mallet to try to loosen and engage the hubs.

Remember, it could be that only one hub is not engaging and the front differential with no limited slip is directing all of the power to that wheel (i.e. the wheel with least traction).

Short of all of this, you may have to go out and buy new hubs. just get manual ones since they are cheap and easy to find at the parts store. You will need a special socket to remove the bearing retaining nuts (something like 2 3/8", i forget the exact size, but it will be labeled as used for ford full size hubs).

If you attempt to remove the hub yourself, be sure to extract the hub nut retaining pin before loosening the bearing retaining nut, otherwise you could damage the assembly. you will need a magnet or pick set to remove this small pin which is slid into the spindle to stop the retaining nut from loosening.

Good luck.
847alexc is offline  
Sponsored Links

  Ford Forums - Mustang Forum, Ford Trucks, Ford Focus and Ford Cars > Ford Trucks | Utes | Vans |SUVs | Crossovers > Ford Bronco Forum

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode

Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

For the best viewing experience please update your browser to Google Chrome