Vacuum hose connection

[Ed P.]

On the passenger side of the firewall there is a small vacuum hose that goes thru firewall. This is the vacuum sorce for the heater controlls. It is not connected for some reason. Thru the searce I found it is suppose to be "t" in at this point to anothe line. My question is which line is this suppose to be connected too. I have the main supply line coming from manifold or red or white striped line. Thanks Ed

[Jack H.]

Re: Vacuum hose connection

There IS a vac line in that general viscinity that's NOT supposed to be connected to anything... That's the vent hose from the wiper door's wiper arm parking switch.

The reason there's a short run of vac hose from the switch through the firewall is to keep the switch's vent vacuum from sucking airborne water. From your description, I can't tell which hose you're refering to specifically. But, this one would run into the cowl area and connect to the park switch that the RH wiper arm strikes when it assumes its final rest position.

[Jeffrey S.]

Re: Vacuum hose connection

Ed:
I f the hose you are describing is very skinny (like a windshield washer hose) it does indeed go to the heater control head and is connected to a tee. The tee has one very skinny branch and two regular size off each end. I will have to look at my '69 later today to see where the large hoses come from and go to. The hose Jack is referring to is cut off very close to the firewall and is a regular size hose which would be much larger than the one I think you are referring to.
Jeff

[Dennis S.]

Re: Vacuum hose connection

Ed

Jeff is right. That tiny hose tees into the yellow-striped hose that comes off the center port of the wiper door relay and goes to the vacuum tank. Mine has a small metal clip to secure it to the tee. I placed the tee a couple of inches off the port, after it makes the turn to go to the tank.

Dennis

[Ed P.]

Re: Vacuum hose connection

Yes it is the hose Jeff describes. I connected a vacuum source to verify heater controll operation. I am also haveing trouble finding that "t" fitting. Thanks Ed

[Kenny C.]

Re: Vacuum hose connection

You have the correct hose (yellow) and I know about the Tee its impossible to find. Doc Rebuild has a replacement however it's not correct as the small end comes off on the end rather than the center. If you find a source for the correct one let me know because I need one too.

[Ed P.]

Re: Vacuum hose connection

Great thanks I will let you know. Ed

[Ed P.]

Re: Vacuum hose connection

Here is what I have found so far. Eldonjames.com makes one P/N RT4-2 Called a reduction T So far have not located one at there listed distributors. Still looking. Ed

http://eldonjames.com/html/Automotive_HTML/BN_redtee.html

[Alan S.]

Re: Vacuum hose connection

Hi Ed,
I believe that 'T' has been pretty difficult to find. So please post the source if you do find it.
Regards,
Alan

[Rich P.]

Re: Vacuum hose connection

Here is a picture of a very hard to find original TEE It's in post # 17 in this thread.

https://www.forums.ncrs.org/showthread.php?t=66923&uid=3252

Rich

[Roger O.]

Re: Vacuum hose connection

Here is the T just under the rubber bumper.

[Ed P.]

Re: Vacuum hose connection

I have emailed Eldon/James for info. What is the color of the fitting? I have pics of yellowed and black. Ed

[Roger O.]

Re: Vacuum hose connection

The one on the pic I posted is black (plastic). I thought I had seen metal ones but not sure.
I thought I was really on to something when I ordered by description the handful below. LOL Oh well you win some and lose some.

[Dennis S.]

Re: Vacuum hose connection

Here is a picture of a very hard to find original TEE It's in post # 17 in this thread.

https://www.forums.ncrs.org/showthread.php?t=66923&uid=3252

Rich

That's it. I thought mine came from Dr. Rebuild with the new hoses, but come to think of it, it was already there and evidently original. The small fitting is definitely in the center, and it is black. By the way, my vacuum relay is mounted on the driver's side firewall (April build) and not under the passenger side fender.

[Ed P.]

Re: Vacuum hose connection

Eldon/james has returned my email and they are going to let me order direct. I am going to order a dozen once I confirm the size is correct. Let me know how many are interested and i will order more if needed.The P/N is RT4-2BN Ed

http://eldonjames.com/html/Automotive_HTML/BN_redtee.html