73 S- follow up question re pipe that connects to air cleaner

[mac73s]

I have purchased the rubber cap that fits to the bottom of this pipe, and I am wondering what the pipe's purpose is. I assume that the rubber cap fits up high enough to cover the hole that is on the side of pipe, but if so, I am unclear why it (the hole) would be there. The pipe could easy have been made a sealed item, so is there a reason the rubber cap needs to be removed and this item drained of moisture/fuel?? Probably all dumb questions, but this gizmo has me wondering. Thank you.

[RSTarga]

That is a drain, there should be a slit at the bottom of the rubber tube.

[edmayo]

When servicing the car you were expected to 'squeeze' the rubber hose to let out accumulated oil from the aircleaner that would collect from the breather fumes condensing.

[jrbennett]

From what I remember, the hole on the side of the pipe is what holds the rubber cap on.
I think there's a nub on the inside of the cap to locate and hold it on the tube.

[mac73s]

Thank you all so much...most helpful as always...another small piece goes on today!

[cmcfaul]

That mounts to the back right of the engine bay. A hose runs from it to the the air filter housing. Without it, the oil from the crank case breather will drip onto the back of your engine making a mess. I extended mind down to the bottom of the engine so any dripping oil does not get on my clean engine.

Chris

73 911 E