|
|
Veteran
Posts: 298
 
Location: WA/USA | I am rebuilding my first FL HVAC system (1960 Plymouth Suburban / no AC). It's only taken me a few years to get to it since the heater core blew in 1989, but I am finally doing it.
1. All three of my vacuum cans are stuck and the nipples broken off. Is there a common replacement source / part #?
2. The Temp valve is fried so I am working on a replacement.... but out of curiosity, what does the spring do-dad do that is connected to this valve and sits within the duct box?
Thanks for the assistance oh wise ones. |
|
| |
|
Expert
Posts: 1782
 
Location: Alaska | That is what I call a capillary tube. It is filled with a liquid, usually alcohol and is designed to maintain the temperature semi-automatically that you have set. |
|
| |
|
Veteran
Posts: 298
Location: WA/USA | Thanks for that info on the capillary tube. I'll have to ponder if it is worth restoring that function when It appears that I can simply replace this with a $22 cable valve and a couple of elbows.
I have been, to my surprise, able to free up one of the vacuum canisters without ruining it's functionality, so I'm going to hope to get them all going again. I thought for sure that at least that the diaphragm would be toast.
The nipples appear to have been brazed or soldered from the factory, so I am replicating that.
|
|
| |
|
New User
Posts: 1
| Nice project! For the vacuum cans, there’s no direct replacement, but universal ones from Dorman or SMP can be adapted—just match stroke length and mounting. For the temp valve, the spring do-dad is a bimetal coil that adjusts the blend door based on air temp—it helps regulate cabin heat automatically. If it's shot, you can bypass it or rig a manual setup. |
|
| |
First FL HVAC Rebuild Questions
