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Please Help Identify Mystery Brake Hose 96 E350

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Old Jan 11, 2024 | 06:08 AM
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Question Please Help Identify Mystery Brake Hose 96 E350

I've been working on the brakes on my 96 E350 Conversion van and I came across a hose I can't identify. There is a metal distribution fitting on the rear axle where the line comes in from the Master Cylinder, then two lines come out of it and go to the rear brake drums. There is another hose coming off the fitting that is cracking and falling apart with a big hole in it, but it's dry and there is no brake fluid coming out of it.
Can anyone please tell me what this extra hose is for or where it goes?

Thank You

PS Sorry I just realize I posted to the wrong forum and there is no way to delete a post.
 
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Old Jan 11, 2024 | 06:51 AM
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Sounds like the rear diff vent tube
 
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Old Jan 11, 2024 | 06:57 AM
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I've never even heard of that before. Can't imagine why it would need a vent and where it vents to?
 
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Old Jan 11, 2024 | 07:13 AM
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Originally Posted by David40
I've never even heard of that before. Can't imagine why it would need a vent and where it vents to?
Bit vents to the atmosphere to release pressure and avoid blowing out axle seals. You'll definitely want to make sure that the fitting is free-flowing without any debris inside of it and put a new tube on it.
 
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Old Jan 11, 2024 | 07:45 AM
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OK I think I get it. That metal distribution block/fitting serves two purposes. One is a brake line in and two out for the rear brakes, then it also has a hole in the back that opens into the axle that goes through a separate passage in the fitting to a hose to nowhere, and has noting to do with the brakes.

Thanks for clearing that up.
 
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Old Jan 11, 2024 | 08:03 AM
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Correct. You got it figured out now.
 
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Old Jan 11, 2024 | 08:14 AM
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Originally Posted by David40
OK I think I get it. That metal distribution block/fitting serves two purposes. One is a brake line in and two out for the rear brakes, then it also has a hole in the back that opens into the axle that goes through a separate passage in the fitting to a hose to nowhere, and has noting to do with the brakes.

Thanks for clearing that up.
Nailed it
 
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