Manifold cleaning

[Limited Ex]

Going to clean my manifold in the morning and ran into an unkown potential accident, maybe. Follow me?
I was making all the disconnections so I would not have that much ahead of me in the morning and noticed that the vacuum line hose for the brakes coming from the upper manifold has pressure still in it. Is it cool to remove the hose and relieve the pressure, or does it need to be clamped off? I was worried that there would be a possibility of getting air in my lines. Thanks

 

[Iggy flywheel]

manifold

The brake vacum line is under vacum air is going into it when u take it off that is normal. Just hook it back up when u ready to. Air wont get into brake lines. It is separate from they hydrolic system of the brakes.