Leak at rear backing plates - Ford Powerstroke Diesel Forum
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post #1 of 7 Old 12-08-2019, 06:20 AM Thread Starter
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Leak at rear backing plates

Anyone know what the line in the photo is for? It is leaking on both sides but this is the worse one (Driver's side). It goes into the backing plate opposite of the brake calipers.

Any info is much appreciated.

Sorry for the rotated pic. Don't know why it rotates when uploaded.
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post #2 of 7 Old 12-08-2019, 07:37 AM
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I beleive that is the ABS wire. It is probably the axle seals leaking. How many miles?

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post #3 of 7 Old 12-08-2019, 10:37 AM
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I 2nd that. Axle seal is leaking

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post #4 of 7 Old 12-08-2019, 10:41 AM Thread Starter
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post #5 of 7 Old 12-08-2019, 11:55 AM
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i would think your ABS sensor O-ring is a probable cause

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post #6 of 7 Old 12-08-2019, 12:06 PM
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Check the axle vent to see if it is open or the hose damaged
wasps will plug the hose sometimes -- a small engine fuel filter will keep them out

Excess pressure in the axle housing will cause the seals to leak -- relieving the pressure may fix the seal leak
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For all those wanting a premium silicone sealer Kubota 70000-73764 is the best your gonna find. This is a hybrid gray silicone that uses solvent rather than acid to start the curing reaction, this makes it safe for aluminum and and any surface that involves coolant.
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post #7 of 7 Old 12-08-2019, 03:18 PM Thread Starter
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Thanks for the responses.

Just checked the vent and it's clear....so, back to the dealer.
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