'60 Biarritz need help

[Whit]

Attached are two photos of my engine with some questions.
First photo '60 Engine Overview shows an arrow pointing to a device on my manifold. I don't know what it is or what it should be connected to, if anything. I think it is some kind of vacuum check valve.
The second photo shows a dotted line going from the main manifold vacuum tubing to one side of the 'T' on the vacuum brake booster. Is there supposed to be an inline check valve in this circuit? Also, what attaches to the other side of the vacuum brake booster 'T'?
I hate to be so dense, but a lot of this vacuum tubing was missing when I found the car. I have not found a reliable reference that covers the vacuum tubing connections. I wish someone had a diagram out there somewhere. The vacuum connections for the door locks are fairly straight forward, but under the hood has me confused.
Many thanks for any advice you can offer.
Whit   whitmcfarlin@msn.com

[The Tassie Devil(le)]

I believe the inline check valve is in the end of the vacuum canister.

This canister should have a hose to the engine manifold , and acts as a vacuum source during engine vacuum fluctuations, and when the engine is not running, to supply an initial vacuum for other operations that require vacuum.

Until someone else responds, I am tipping that the dotted line is correct, and that the hose hanging from the end of the canister possible plugs into the bottom of the "T".

Not sure where the other end of the hanging "T" goes though, but that looks like it is a vacuum source from the canister to somewhere.

Bruce.

[quadfins]

Here is my take - from my '61, which should be very similar...

First, I don't know what the cylindrical canister above the master cylinder is for. On '61 and '62s, that is the location for the vacuum storage tank that operates the door locks and in '62, the trunk release. But the tank is of a different shape - see pic # 3.

Back to the hoses. Refer to pic # 1:
   Vacuum is sourced off of the back of the carb, The larger hose goes to the firewall, and is spring-clamped to a white plastic L-shaped modulator valve. I have also seen these in pot-metal on earlier cars. From the plastic modulator, a new hose is spring clipped, and also held to the firewall by a metal clamp-thing. This hose goes into the top of the T fitting on your Bendix brake booster. This corresponds to your dashed lines in pic 2.
   From the bottom of the booster T fitting, another hose runs under the master cylinder, toward the inner fender (drivers side), where it attaches to the actual brake booster vacuum tank. It is rounded, similar to the one in pic 3, but not exactly the same. It is in approximately the same location as the antenna motor and shaft is found on the passenger side. This rounded tank, under the drivers side fender, tucked back under the hood hinge, is the actual brake booster storage tank.
   Does your car have power door locks? If so, that would answer the question of the tank above the brake booster/master cylinder. I have seen these rotted out from within, due to moisture buildup from the air, so it might be that the tank that is currently there is a later-style replacement. In my pic 3, you can see the original style PDL vacuum tank.

I think your dashed line hose needs to go into the brake booster T. Then, from the bottom of that T, connect to the vacuum tank. Check under the drivers side fender - is there a rounded tank there?


Jim
   

[David Greenburg]

I will try and look at mine tonight.  In answer to Jim's question about locks, yes, all '60 Eldos had PDLs.

[Whit]

My car has two tanks like the one above the brake booster that Jim's photo shows. I 'thought' the second tank was a reservoir for air used in the air ride system. My car has been converted to springs. Are there three vacuum tanks on this '60, the 'coffee' can shaped one above my brake booster and two more rounded ones?

Whit

[76eldo]

Whit,

Yes, there are three.  The coffee can, and two below the master cylinder/booster.

As far as the tri power stuff, I will try to get in the garage and either take photos or map it out for you from my 60 convert with tri power.  It's pretty simple once you see it.


Brian

[Whit]

Thanks so much Brian. There may be others who would need that map. I assume that the third tank attaches to the bottom of the 'T' on the brake booster. I will install the third tank this morning.

Thanks   Whit              whitmcfarlin@msn.com

[76eldo]

Whit,

Have not been in the garage yet but I do have these photos taken while I was taking the Seville apart.

A little help for now.

Brian

[David Greenburg]

It was raining too hard last night to get my car out for pictures.  I can try again in few days if you don't have what you need.

[Whit]

I installed the lower rounded vacuum bottle today (second photo attached). Thanks for the photos and input. I am clearer on some things but still a little confused on some of the connections. I now see that the lower vacuum bottle connects to the lower 'T' inlet on the brake booster and the main manifold vacuum pipe connects to the upper 'T' inlet.

I'm still not sure just what a "plastic L-shaped flow modulator" is or does? Jim said it goes in-line with the main vacuum line from the carbs to the upper 'T' inlet on the brake booster. I don't seem to have one. Any thoughts here?

Also no one commented on my engine overview photo (first photo re-attached below) on what the thing is or does where the arrow points. Mystery part...some sort of a check valve on the manifold, but why?

Thanks for the help.   Whit

[quadfins]

I am working from memory here, from a '60 manifold that I removed for a friend some years ago, so others may have better info...

IIRC, that fitting is the vacuum source for the devices in the passenger compartment. Namely, the parking brake release, and any heater/AC actuators that run on vacuum. A small hose runs to the junction box on the firewall (it also has a bunch of wires). This connector mates the hose and wires from the engine compartment to the corresponding ones in the interior. The vacuum hose plugs into the inside nipple, and then goes to the neutral safety switch, from which it is routed to the brake release actuator.

The junction box is that one located under and to the side of the brake booster.

On my '61, the vacuum source is a brass fitting, on the same side, but at the rear of the manifold. There is a check valve inside the passenger compartment, and also serves to split the sources of vacuum to the brake release and the heater/AC system. I thought that, on '60s, the check valve is integral to the fitting on the intake manifold.

As for the check valve for the brake booster hose, see pic below:

Jim

[Whit]

Jim:   Thanks for the information. I don't have the check valve but I will see if I can find one. OPGI seems to have one in their catalog, although it implies that it connects directly to the brake booster (i.e. not 'in-line'). I guess it could be used in-line also.
Whit

[quadfins]

The power locks tank has the check valve integral to the fitting. Strange that they are not all like that.

If you PM me your address, I'll send it to you- if it works!.

Jim

[Whit]

Jim:

Thank you so much for your kind offer on the check valve. Would you believe that I found mine today in a sack of other parts that I had overlooked. I tested it and it works fine. It is the pot metal version.

It is great that CLC members are so responsive to others needs. Much appreciated.

Whit 

[quadfins]

Well that is certainly good fortune.

Another example of how this forum helps us put the clues together and solve our automotive mysteries.

Best wishes,

Jim