Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks
Sign in using an external account
Register Forgot Password?


1973 - 1979 F-100 & Larger F-Series Trucks Discuss the Dentsides Ford Truck

Reply
 
 
 
 
LinkBack Thread Tools Search this Thread
  #1  
Old 04-05-2012, 09:04 PM
Paul Trahan Paul Trahan is offline
New User
 
Join Date: Mar 2012
Posts: 10
Paul Trahan is starting off with a positive reputation.
1974 Highboy - Stuck in 4WD

I just bought this truck and have been getting it running a bit at a time. Most recently, I replaced the red ***** on the hubs, reassembled them, and ran into a problem testing them. I locked the hubs, put the shifter in 4WD Low, and drove a few feet. When I try to unlock the hubs, they won't unlock, and the shifter won't move.

I don't know what to do and would appreciate any help.
Reply With Quote
  #2  
Old 04-05-2012, 09:12 PM
critterf1's Avatar
critterf1 critterf1 is offline
Posting Guru
 
Join Date: Feb 2010
Location: Newport, N.C.
Posts: 1,998
critterf1 has a good reputation on FTE.critterf1 has a good reputation on FTE.critterf1 has a good reputation on FTE.
You've got it in a "bind".
__________________
Speed is a question of money. How fast "CAN" you go?
Reply With Quote
  #3  
Old 04-05-2012, 10:09 PM
Paul Trahan Paul Trahan is offline
New User
 
Join Date: Mar 2012
Posts: 10
Paul Trahan is starting off with a positive reputation.
Any thoughts on how to get out of the bind?
Reply With Quote
  #4  
Old 04-05-2012, 10:19 PM
critterf1's Avatar
critterf1 critterf1 is offline
Posting Guru
 
Join Date: Feb 2010
Location: Newport, N.C.
Posts: 1,998
critterf1 has a good reputation on FTE.critterf1 has a good reputation on FTE.critterf1 has a good reputation on FTE.
Jack up the front and try to unlock. I'd almost bet the front and rear gears don't match.
__________________
Speed is a question of money. How fast "CAN" you go?
Reply With Quote
  #5  
Old 04-05-2012, 10:32 PM
Paul Trahan Paul Trahan is offline
New User
 
Join Date: Mar 2012
Posts: 10
Paul Trahan is starting off with a positive reputation.
I will give it a try. Does this mean I can't use my 4WD until I fix something else?
Reply With Quote
  #6  
Old 04-06-2012, 01:27 PM
Paul Trahan Paul Trahan is offline
New User
 
Join Date: Mar 2012
Posts: 10
Paul Trahan is starting off with a positive reputation.
I jacked up the rear, the tires spun a bit and freed something up (maybe the transfer case). This freed up the 4WD shifter and allowed me to turn the hubs to Free. Now, I just need to figure out what I did in the first place to cause it to lock up.
Reply With Quote
  #7  
Old 04-06-2012, 01:37 PM
70 Bronco TX's Avatar
70 Bronco TX 70 Bronco TX is offline
Senior User
 
Join Date: Jul 2009
Location: Canyon, TX
Posts: 377
70 Bronco TX is starting off with a positive reputation.
I always (usually only need to with my Bronco) back up about 15 feet. That seems to loosen up the hubs.
__________________
1979 F350 Ranger XLT 2WD Crew Cab
1975 F250 Ranger XLT 4WD Regular Cab
1970 Bronco Sport
Reply With Quote
  #8  
Old 04-06-2012, 01:49 PM
77&79F250's Avatar
77&79F250 77&79F250 is offline
Workaholic
 
Join Date: Feb 2007
Location: S/W Missouri
Posts: 16,394
77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of
Did you reassemble the lock in/out correctly and did you re-install them with them in the locked in or out position? You can do that ya know?

If everything is correctly assembled and installed properly.....next question, is it parked on pavement or a concrete driveway? And does it have any roll pressure on it?

With in idling and in drive, keep constant steady pressure on the transfer case stick while trying to pull it (transfer case lever ) out of gear, and just bump the throttle a small bit.

Then try the same thing with it in reverse, and you might unbind the drive line. Driving on hard packed surface (pavement/driveway) can cause that.

Until figured out whats wrong do NOT drive it on pavement!
__________________
77&79 F250 Rich & Penny
77 351M auto, a/c, add a leaf 33x12.50's
78 (79 headlights) 460 4 spd, 4", a/c and 35's
79 351M 4spd 6" Skyjacker Edelbrock-Holley-Hedman 35's
99 Ranger 4x4, 98 Expedition 4x4, 73 Bronco Hillbilly-Bug
71 Bronco 302 35" Boggers 5.58 gears spool/locker
Reply With Quote
  #9  
Old 04-06-2012, 01:59 PM
gfw1985's Avatar
gfw1985 gfw1985 is offline
Amatuer Restorer
 
Join Date: Mar 2008
Location: Raphine, Virginia
Posts: 3,389
gfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to allgfw1985 is a name known to all
Quote:
Originally Posted by 77&79F250 View Post
Did you reassemble the lock in/out correctly and did you re-install them with them in the locked in or out position? You can do that ya know?

If everything is correctly assembled and installed properly.....next question, is it parked on pavement or a concrete driveway? And does it have any roll pressure on it?

With in idling and in drive, keep constant steady pressure on the transfer case stick while trying to pull it (transfer case lever ) out of gear, and just bump the throttle a small bit.

Then try the same thing with it in reverse, and you might unbind the drive line. Driving on hard packed surface (pavement/driveway) can cause that.

Until figured out whats wrong do NOT drive it on pavement!
All good points. #1 cause of locking these old trucks up is someone new to the old technology. They just don't work the same as newer vehicles.
__________________
66 Bronco Half Cab, 203ci I6, CI aluminum head and intake, Isky 256/256 cam, Keith Black pistons, Clifford header, Holley 390cfm 4v, 9.7:1 comp, DSII ignition
55 F100 Build in progress http://www.ford-trucks.com/forums/13...100-build.html
Reply With Quote
  #10  
Old 04-06-2012, 04:38 PM
montana_highboy montana_highboy is offline
Post Fiend
 
Join Date: Apr 2008
Location: Big Sky Country
Posts: 8,263
montana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud ofmontana_highboy has much to be proud of
Technically, as per the factory manual, you're supposed to place the transfer case in 2wd before you disengage the hubs,
but even this does not always work, in that case just drive in reverse 10-15 feet and this will allow you to disengage the hubs as well as the shifter.
Reply With Quote
  #11  
Old 04-06-2012, 06:03 PM
Paul Trahan Paul Trahan is offline
New User
 
Join Date: Mar 2012
Posts: 10
Paul Trahan is starting off with a positive reputation.
I assembled the hubs correctly, and they appear to be working fine now. The problem was the lockup. I will what the manual says and then try backing up if that does not work. Both are a lot easier than jacking up the read end. And, it sounds like I need to keep it out of 4WD on dry pavement.

Thanks for the great information.
Reply With Quote
  #12  
Old 04-06-2012, 11:38 PM
77&79F250's Avatar
77&79F250 77&79F250 is offline
Workaholic
 
Join Date: Feb 2007
Location: S/W Missouri
Posts: 16,394
77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of77&79F250 has much to be proud of
Yes Yes and a big NO 4wd on pavement great way to really break stuff.
__________________
77&79 F250 Rich & Penny
77 351M auto, a/c, add a leaf 33x12.50's
78 (79 headlights) 460 4 spd, 4", a/c and 35's
79 351M 4spd 6" Skyjacker Edelbrock-Holley-Hedman 35's
99 Ranger 4x4, 98 Expedition 4x4, 73 Bronco Hillbilly-Bug
71 Bronco 302 35" Boggers 5.58 gears spool/locker
Reply With Quote
Old 04-06-2012, 11:38 PM
 
 
 
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
Auto Hub won't unlock swann79 Super Duty & Heavy Duty 3 11-02-2007 01:54 AM
Hub question - they won't unlock! Ed in Maine Super Duty & Heavy Duty 22 06-06-2007 03:47 PM
Auto hubs wont unlock saffordstud 1999 - 2003 7.3L Power Stroke Diesel 9 02-12-2007 05:53 PM
Auto hubs won't unlock kilroy99 1999 - 2003 7.3L Power Stroke Diesel 5 01-02-2005 12:44 AM
Hubs won't unlock...sometimes. Monsta Super Duty & Heavy Duty 22 02-12-2003 08:51 PM


Go Back   Ford Truck Enthusiasts Forums > Older, Classic & Antique Trucks > 1973 - 1979 F-100 & Larger F-Series Trucks

Tags
1974, 1978, alberta, building, code, concrete, drive, driveway, f250, ford, highboy, powered, problems, schaumburg, stuck, vbulletin, wheel, wrong

Thread Tools Search this Thread
Search this Thread:

Advanced Search

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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


Participate In The Forums

Create new posts and participate in discussions. It's free!

Sign Up »





All times are GMT -5. The time now is 12:39 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Advertising - Terms of Use - Privacy Statement - Jobs
This forum is owned and operated by Internet Brands, Inc., a Delaware corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor Company.

vbulletin Admin Backup