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Unread 12-15-2011, 06:05 PM   #1
njdave
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78 cj5 front wheels dont turn in 4 wheel drive

front wheels dont turn in 4hi or 4 lo drive shaft turns but thats it. this is my first jeep and 4wd, so iam a little lost. iam hoping its just the hubs? maybe?

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Unread 12-15-2011, 06:14 PM   #2
skizriz
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Are the hubs locked?

Hopefully the PO didn't remove the gears from the front diff.
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Unread 12-15-2011, 06:20 PM   #3
njdave
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Yeah hubs are locked. And when I brought her home I changed all the fluids and I don't remember seeing any metal or anything obvious missing
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Unread 12-15-2011, 06:40 PM   #4
Hashbrown
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Broken hub?
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Unread 12-15-2011, 06:56 PM   #5
98blacksahara
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sometimes too much grease can make a hub "stick" or old nasty grease can do the same..
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Unread 12-15-2011, 08:44 PM   #6
WindKnot
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That's where I would start; cleaning and rebuilding the front hubs.
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Unread 12-15-2011, 09:19 PM   #7
lucdog
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Quote:
Originally Posted by njdave
front wheels dont turn in 4hi or 4 lo drive shaft turns but thats it. this is my first jeep and 4wd, so iam a little lost. iam hoping its just the hubs? maybe?
The entire drive shaft , including the front differentially yoke is turning, correct. What about the axle shafts, where you can see the u-joint at the knuckel?

I assume the Jeep is driveable in 2 wd. Make sure the hubs are locked, place the transmission in netural, on a FLAT level surface, push the Jeep foward or backwards, while watching the axle shafts at the knuckel, they should be turning with the wheel. The same thing can be done by jacking up one front wheel, rotateing it while watching the axleshafts.

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1979 CJ7 360, TH400/Quadratrac trail Jeep.
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Unread 12-15-2011, 09:21 PM   #8
lucdog
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Quote:
Originally Posted by njdave
Yeah hubs are locked. And when I brought her home I changed all the fluids and I don't remember seeing any metal or anything obvious missing
Including the front diff?
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1957 WILLYS pickup, needs work.
1973 J 4000,
1978 CJ7 DD.
1979 CJ7 360, TH400/Quadratrac trail Jeep.
1979 J20
1980 CJ5 trail Jeep.
1983 CJ7 pretty weekend and sometimes to work Driver in the summer, My first rebuild, if the Q-trac and 5 are broke, this one is the one to take. its just as capable as the other 2, except nice paint.
1984 Grand Wagoneer, 1 ton axles, great 360/727, and a big a$& tree fell on it .
1989 YJ the CJ to YJ conversion.
2005 TJ Rubicon.
2011 Grand Cherokee Laredo 4x4, Mrs. LUCDOG's DD.
Lots of parts not for sale, i'm a hoarder.
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Unread 12-16-2011, 03:42 PM   #9
njdave
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Ok I checked the axles the drivers side is turning fine but the hub is not locking the passenger side axle is hardly turning. Iam guessing that could be bad. The front diff was checked when I brought it home and it has Amsoil severe duty in it and I didn't see anything missing and there where no metal chips in the old oil. Thank you to everybody who has been responding.
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Unread 12-16-2011, 03:56 PM   #10
scrappycj5
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As mentioned before, check to see if the axle u-joints are turning at the wheels. If so, then you have a problem with the locking hubs. either one of them are bad or they need to be removed and cleaned, then re-greased.
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Unread 12-16-2011, 04:13 PM   #11
njdave
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I check the axle ujointa the driver side is turning fine but the passenger side hardly turns,
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Unread 01-09-2012, 12:57 PM   #12
njdave
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Quote:
Originally Posted by njdave
I check the axle ujointa the driver side is turning fine but the passenger side hardly turns,
Yeah hubs aren't working took them apart and cleane them up and nothing. So like I said the driver axle turns but the passenger side doesn't move guess I gotta look inside the diff?
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