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Old 11-11-2012, 03:16 PM   #1
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rear axle drop

Need some quick how to tips, i am swapping out my rear axle & i have everything off xcept this little box with 4 connections, 1st question, what is it, & how should i proceed?

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Old 11-11-2012, 03:20 PM   #2
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That is the vent hose fitting mount for the axle that also serves to connect the left & right brake lines together. It is removed by using an open-end wrench to unscrew its vent tube connector on top of the block which threads into the axle housing below. Leave the brake lines connected.
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Old 11-11-2012, 03:24 PM   #3
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Thanks jerry, but the new axle doesnt have a box so i will need to use the old one, am i looking at any problems here?
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Old 11-11-2012, 03:26 PM   #4
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Your new axle should already have a tapped hole to accept your existing vent block. At least it will if it was set up for a TJ. If there is no hole there, drill & tap a fresh mounting hole for the vent block
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Old 11-11-2012, 03:31 PM   #5
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There is a tapped hole, do i need to drain anything or just disconnect & plug till the new axle is n?
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Old 11-11-2012, 03:38 PM   #6
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No need to plug it or drain anything, there is just air inside where the coupler passes through. Just let the block hang until you have the new axle mounted and then screw the vent hose coupler back down through the block and into the new axle.
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Old 11-11-2012, 03:45 PM   #7
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Dont mean to sound picky but whwn i started unscrewing the brake lines from the box i assume that was brake fluid, thats my concern
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Old 11-11-2012, 03:46 PM   #8
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Hold on, I already said in post #2 to leave the brake lines connected to the block. The brake lines don't need to be disconnected from there at all. Notice they are still connected as I remove that block in my above photo.
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Old 11-11-2012, 03:59 PM   #9
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Ok, but what about this line its still connected to the block when i drop the axle

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Old 11-11-2012, 04:26 PM   #10
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U still with me man
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Old 11-11-2012, 05:57 PM   #11
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That is just the air vent hose. Pull it off once you remove/cut off its crimped hose clamp. Replace the old hose clamp with a small worm drive stainless steel hose clamp.
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Old 11-11-2012, 06:44 PM   #12
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I believe what Jerry is telling you that the part you unscrew is whats holding on the block. Pull the rubber line, unscrew the tube it was on and just lift the block off. Im pretty sure thats how mine was.

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