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Unread 02-09-2013, 10:22 PM   #1
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2008 JK Wrangler 
Join Date: Jan 2009
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OEM Rubicon Locker Study

A forum member recently sent me his old Rubicon e-locker.
Here is a quote from the owner:
"...when wheeling in tough areas (sand, mud, rocks &tc.) I put the locker in for a while & then take it out, put the locker in for a while & then take it out, repeat. So, I've used it a lot. My Jeep has 105K miles & I'll bet 15-18K of that is off road."

It has seen some good use. The differential and dog clutch show very little wear.
The ring in the 3rd picture below looks quite worn, leaving a small lip at the inner diameter
That could be the cause of locker ratcheting.
Installing a shim to make up the difference has at least temporarily fixed it in some cases.

Here is a look at how the Rubicon e-locker works.

See this great video to review how a regular differential works:

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Unread 02-09-2013, 11:29 PM   #2
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Great pictures. Very interesting post.
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Unread 02-10-2013, 06:36 AM   #3
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Well done Sir. You are a valuable asset to this forum.
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Unread 02-11-2013, 11:05 AM   #4
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Wahoo! That answers several of my locker questions. Now, this is a technical thread.
One foot in the grave & one foot on the gas pedal!!
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Unread 02-11-2013, 03:54 PM   #5
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One of the best explanations of a locking differential I've seen, thanks for putting it together.
2012 JKU Rubicon
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PIAA ATP off road lights, full light bar, Terraflex leveling kit, Mygig lockpick
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