Manual hub conversion — now what about those vacuum lines?

[moquiti]

Greetings, having just done a manual hub conversion I was wondering what to do about the vacuum lines and solenoid that controlled the old PVH hubs. I would like to deactivate any unused vacuum lines, but am aware that the hub vacuum system is also connected to the cabin air heater valve and maybe other vacuum-controlled systems(?). I don't currently have any vacuum leaks, and certainly don't want to create new ones. I'm assuming that the manual hub swap didn't create any vacuum issues, but I haven't found anything regarding disabling the lines at the tech page for the swap.

Many thanks!

1998 XLT Supercab 4WD 4.0L Auto, 170K "ST Racing" (whatever that means!)

 

[fastpakr]

Unplug the solenoid and cap off the vacuum lines.

 

[moquiti]

So this won't affect the other vacuum system(s)?

 

[Curious Hound]

Not as long as you cap the fitting where you remove the line that supplies the solenoid.

 

[moquiti]

Thank you very much!

 

[Ernie1945]

Wow, Is that thing hard to reach from bottom, Does it matter if you leave it plugged it?
I have done hub mod and don’t need it. I am getting codes like P1838 and case won’t shift, and no
click noise on dash switch.

 

[Curious Hound]

I would remove the vacuum line from its source and cap off the fitting at the source so you minimize the chance for vacuum leaks.

you think that’s hard to reach? Try the oil pressure sender on a Vulcan 3.0l.