Vacuum Line broke Help

[Bill Schmidt]

This 4wd hub vacuum line is broke right in the front of the vehicle. #2 pretty much right where the #2 label is. This feeds? vacuum to the passenger 4wd hub.



Do the hubs engage WITH vacuum or WithOUT vacuum.

With this line broke is my hub on the passenger side on all the time????

Anyone ever succesfull with just repairing the break instead of replaceing whole line.

Thanks!

 

[intense98neon]

I believe the hubs engage without vacuum. That way if you loose vacuum you would still have 4x4.

 

[Bill Schmidt]

Thanks, So just because the hub is engaged does not really do anything other than more mechanical wear vs not being engaged? Its not like I'm going arouind with 3 wheel drive, it only goes to 4 wheel drive once the transfer case is engaged?

 

[JExpedition07]

If you want you can temporarily run it this way, however I would unplug the vacuum hose from the other side hub. Loss of vacuum on one side can effect the other and cause grinding of the IWE which isn’t good for the teeth.

A/M sells permanent lockouts that couple hub and shaft together at all times. So in short no it won’t hurt anything to unplug it and you will still have 4WD.

 

[Trainmaster]

Plug it up so you don't have a vacuum leak too.

 

[Bill Schmidt]

Actually I was hoping to repair it somehow instead of replacing the whole long snaking line.

 

[bobmbx]

Actually I was hoping to repair it somehow instead of replacing the whole long snaking line.

Wrap it with electrical tape. Even better would be to cover the hole with something stiff..a piece of plastic or metal, then wrap the tape around that. It won't last forever, but its damn near free.

 

[16plati]

Actually I was hoping to repair it somehow instead of replacing the whole long snaking line.

It’s easy, watched a ford tech replace mine along with every other 4WD component 3 months ago. Took him 5 minutes.

As for vacuum, truck running in 2hi pulls vacuum to keep the hubs from engaging. Switch to 4hi you lose vacuum and hubs move to engage. Truck off with no vacuum, hubs engage to act like 4WD. You lose vacuum anywhere in the system you will engage the hubs to 4WD but no 4WD light will come on. A small leak will cause the gears to grind. Large leak you will engage the hubs completely. I would spend the few minutes and replace the lines. Just follow the clips

 

[Bill Schmidt]

Is this the correct part?
https://www.tascaparts.com/oem-part...yMDEwJnQ9ZWwtbGltaXRlZCZlPTUtNGwtdjgtZmxleA==

 

[16plati]

Is this the correct part?
https://www.tascaparts.com/oem-parts/ford-tube-al1z7a785c/?c=Zz1icmFrZXMmcz1mcm9udC1icmFrZXMmaT1NQzA3MzMwNSZyPTIxJmE9Zm9yZCZvPWV4cGVkaXRpb24meT0yMDEwJnQ9ZWwtbGltaXRlZCZlPTUtNGwtdjgtZmxleA==

Thts it. Check your vacuum solenoid and check valves up by top right of engine compartment too. They tend to leak a lot also. Just another place to verify no leaks