HUB Issue

[a799608]

First time poster, so I hope I've attached the photos correctly. I recently purchased a 66 CJ5 . Fhead 134. Had the engine rebuilt rather than converting to a 6 Cylinder as I'm trying to keep it original.

4 wheel drive doesn't work. I believe I isolated the issue to the HUBS. Can spin front drive shaft by hand when not in 4x4 and axles are turning inside HUBS. Cannot spin axle by hand when in 4x4 so I don't think it's a Transfer Case issues, and since axles are spinning inside HUBs it seems to be a HUB not locking issue.

2 questions:

1. Are "free-lock" style HUBS the same as "Selectro" style? I can't seem to find a single image of "free-lock" HUBS but my HUBS look very similar to the "Selectro" images yet say "free-lock" on them. Image I hope is attached below.

2. Would you agree that the "sliding gear", sorry don't know the official term appears to be worn out in the second photo? Not much spline left on it in my opinion and seems the majority has been worn over the years.

If I manually turn the front drive shaft, the shaft at the HUB turns, and now amount of "pushing" on that gear will allow it to connect/lock into the HUB. It bottoms out without engaging.

Also, I purchased from the original owner's son, and he gave me a folder about 5 inches thick of every receipt for repairs. Original bill of sale to last oil change. I see nothing about HUBS so I assume these are the originals. The father used Jeep a daily driver for 20 plus years, and has about 250K miles on it best I can guess.

http://www.jeep-cj.com/forums/attachment.php?attachmentid=19869&stc=1&d=1454266054

http://www.jeep-cj.com/forums/attachment.php?attachmentid=19870&stc=1&d=1454266054

 

[Lumpy Grits]

:ww:

IF, you have an 'open' front diff, one axle or the other will spin.
Put in 4WD with both hubs engaged and spin the front wheels(both fronts off the ground)buy hand. Does the opposite wheel turn the opposite direction of the wheel your spin'n? If it does-Your OK.

LG

 

[mriplaybass]

You can also engage both hubs, engage the Transfer Case , and put the Transmission in gear. Jack up one front wheel. You should not be able to turn the wheel that is jacked up. If you can, one or both hubs are not engaging. You may want to thoroughly clean the hubs and repack them according to factory specs. Sometimes the grease is so old that it actually hinders movement inside the hub.

 

[a799608]

That is the situation I have. When engaged the wheels still spin freely even though you cannot spin the drive shaft leading from the Transfer Case . Disengaged, the drive shaft spins freely. Engaged it does not, however the tires spin as though the HUBS are not engaged. That is what led me to the HUBS. The gear that slides between the axle and the hub, the splined on the inside and out, moves in and out with no problem, but it appears that the splines are warn almost completely off, which is why I'm thinking the HUBS are the issue. I posted a photo of the splines with my original post, but not sure if they are viewable.

Thank you for the response.

 

[Lumpy Grits]

That is not 'wear', it's a machined cut.
See if this helps any.........
http://www.jeep-cj.com/forums/f2/broken-selectro-lockout-hubs-23294/

Me thinks, you have a Transfer Case or front diff issue.
LG