The tube is the "Control Valve Capillary Tube."
> Figure 99
> Complete installation instructions

BTW -
Don't know if Classic Parts offers different sizes of squirrel cage fans. FYI - the diameter of the fan in a 12v Impala heater is smaller than the fan in an AD AirFlow heater. Same motor shaft diameter. (I scavaged the Impala 12v motor to use in my '54 heater.)


- Lonnie
My '54 3104
Photos that I have shared on Stovebolt via PhotoBucket are no longer available. Please contact me if you want a photo from an old post.
lonniecook [at] aol [dot] com. I sold my '54 3104 12/12/2017, but I still visit Stovebolt.

OLD STUFF ... houses, furniture, cars, wine ... I love it all