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Old 01-01-2012, 03:54 PM   #1
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Rubicon rear locker flashing light. Photo of inside rear diff Please?

04 rubicon, other than suspension it's stock.

Hey guys, I have a flashing rear lock light when I try to engage the rear locker. The front locks fine, however no go on the rear, just a steady flash. I have done the correct process, to engage, but no go.
After doing some reading/searching I think the best bet would be the air locker hose coming disconnected inside the diff housing. Can someone put up a pic of this, so I know what Im looking at when I pop the cover?
If anyone else has any ideas lemme know..

Thanks

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Old 01-01-2012, 05:55 PM   #2
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This shows the front but it's the same for the rear. Click on the photo to make it larger.
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Old 01-01-2012, 05:58 PM   #3
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Great, thanks Jerry!

From what I have read, when you have the flashing rear lock light, a common fail is disconnect inside the diff of the air hose. Thats where Im gonna start my troubleshooting as the exterior air lines and connections look ok.
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Old 01-01-2012, 06:01 PM   #4
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Make sure when you reinstall the fill plug after refilling it that you don't overtighten it. When they are overtightened, the plug extends too far into the differential where it can cause problems.
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Old 01-01-2012, 06:13 PM   #5
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Save yourself some fluid and just disconnect the rear line from the pump and blow into it. If you feel alot of backpressure, it's still connected. Try shorting the sensor pins on the top that tell the dash when the lock is engaged, or try turning in soft sand and see if it drags a wheel. It might be locking fire, and just isn't sending a clean signal.
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Old 01-01-2012, 06:30 PM   #6
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My problem was a small tear in the hose at the nipple on the axle. I switched to 5/16 silicone tubing from Paragon Performance. Much better than the cheap tubing that comes on our Rubi's.

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