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Unread 05-11-2007, 06:20 PM   #1
artboy
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1996 XJ Cherokee 
 
Join Date: Mar 2005
Location: Buffalo, NY
Posts: 799
front differential

I am trying to find out if I have an open or LSD front end by jacking my XJ in neutral and spinning the wheels. Here is what happens ... when I spin a wheel (either side) the other one does nothing (the driveshaft turns though).

I thought with an open diff they spin opposite and a LSD they spin in the same direction. my wheels seem disconnected from each other ...is that normal?.

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1993 XJ Sport RIP (Parts) - 189k, white, 4.0, automatic, command-trac NP231
1996 XJ Sport Daily Driver - 190k, stone white, 4.0, automatic, selec-trac NP242.
2005 Wrangler Rubicon Summer Toy - 26k, 100% STOCK...silver, automatic, soft and hard tops and doors
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"life moves pretty fast... if you don't stop and look around once and awhile, you could miss it"...F. Bueller

Last edited by artboy; 05-11-2007 at 06:56 PM..
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Unread 05-11-2007, 06:46 PM   #2
madrabbitt
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Join Date: Feb 2004
Location: Albuquerque
Posts: 8,822
um.
front=open from the factory.

shift it into 4 wheel drive, THEN jack it up and try to spin the tires, see what happens.
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"When you see someone who needs help, help them. When you see someone who needs a hug, hug them... Help those who can't help themselves." -Sgt Andrew Tingwall, NMSP. End of watch 6-10-2009
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Unread 05-11-2007, 06:59 PM   #3
artboy
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1996 XJ Cherokee 
 
Join Date: Mar 2005
Location: Buffalo, NY
Posts: 799
Quote:
Originally Posted by madrabbitt

shift it into 4 wheel drive, THEN jack it up and try to spin the tires, see what happens.

Yup... now they spin opposite. I don't quite understand why having it in 4wd makes a difference... all that does is engage the transfer case....it has noting to do with the axle (I don't have vacuum axle disconnect). would like to know why
__________________
1993 XJ Sport RIP (Parts) - 189k, white, 4.0, automatic, command-trac NP231
1996 XJ Sport Daily Driver - 190k, stone white, 4.0, automatic, selec-trac NP242.
2005 Wrangler Rubicon Summer Toy - 26k, 100% STOCK...silver, automatic, soft and hard tops and doors
My Pics
"life moves pretty fast... if you don't stop and look around once and awhile, you could miss it"...F. Bueller
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Unread 05-11-2007, 07:02 PM   #4
madrabbitt
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Location: Albuquerque
Posts: 8,822
well, your selec-trac equipped xj wouldnt have a vac disconnect anyway, even if it were 92 or older.

and you did that quick.
__________________
Installing HID's in stock housings is bad. Here is why.

"When you see someone who needs help, help them. When you see someone who needs a hug, hug them... Help those who can't help themselves." -Sgt Andrew Tingwall, NMSP. End of watch 6-10-2009
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Unread 05-11-2007, 07:08 PM   #5
artboy
Registered User
1996 XJ Cherokee 
 
Join Date: Mar 2005
Location: Buffalo, NY
Posts: 799
Thanks MadRAbbitt..... she was already up on stands in the garage... ran out and just shifted it. I still don't understand why that made a difference... ?????? Does the diff need resistance via the TC to engage the wheels to spin opposite?
__________________
1993 XJ Sport RIP (Parts) - 189k, white, 4.0, automatic, command-trac NP231
1996 XJ Sport Daily Driver - 190k, stone white, 4.0, automatic, selec-trac NP242.
2005 Wrangler Rubicon Summer Toy - 26k, 100% STOCK...silver, automatic, soft and hard tops and doors
My Pics
"life moves pretty fast... if you don't stop and look around once and awhile, you could miss it"...F. Bueller

Last edited by artboy; 05-11-2007 at 07:32 PM..
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