Heat problem

[60vettesdr]

I own a 1960 vette with heat. My problem is that the heat is not working because the cable that attaches to the heat knob has beceom detached from whatever it is supposed to attach to in order for the heat to come on. My problem is I don't know what it is supposed to be attached to. Can anyone help.
Thanks,

Scott

 

[67HEAVEN]

I own a 1960 vette with heat. My problem is that the heat is not working because the cable that attaches to the heat knob has beceom detached from whatever it is supposed to attach to in order for the heat to come on. My problem is I don't know what it is supposed to be attached to. Can anyone help.
Thanks,

Scott

I don't know much about solid axles, but I assume that the cable was attached to a trap door in the heater box. There is likely a small rod "end" that the cable slips over, and a clamp screw a few inches back along the cable to keep the outer sheath in place.

 

[JohnZ]

I own a 1960 vette with heat. My problem is that the heat is not working because the cable that attaches to the heat knob has beceom detached from whatever it is supposed to attach to in order for the heat to come on. My problem is I don't know what it is supposed to be attached to. Can anyone help.
Thanks,

Scott

You have three controls, each has a cable:

Air (left side knob): this operates the air inlet valve in the engine compartment on the front of the heater (where the big flex hose attaches); this valve admits fresh outside air to the heater. If it's closed, you'll get no airflow through the heater core. The cable attaches to a bellcrank lever on top of the valve.

Temp (right side knob): This operates the control valve that admits hot coolant to the heater core inside the heater case; the further out it's pulled, the more coolant flows through the core. Its cable attaches to a bellcrank lever on the valve, up under the dash above the kickpad area where the heater hoses enter from the engine compartment.

Def-Fan: (center knob): This diverts airflow exiting the heater core from the floor outlet to the defroster outlets, depending on how far it's pulled out. Turning it operates the heater blower - "low" to the left, "hi" to the right, "off" in the center position. Its cable attaches to a bellcrank on the firewall side of the lower heater outlet.

Check the ends of the "Air" and "Temp" cables to make sure they're attached to their bellcranks. If you have an assembly manual, all this is shown in Section 101, and it's also shown in the ST-12 Shop Manual on page 1-10, and on page 257 in the Noland Adams book. Pretty simple system, but all three cables have to be attached to their bellcranks to make it work properly.

If all are connected and functioning and you still have no heat, let us know.

 

[Vette66AirCoupe]

I was having similar problems and found out I didn't even have a defroster box! Stick your head down under the glove box and take a look at your blower motor. Make sure the defroster box and the ducting are there! Then look for the cables that should be attached to operate things and utilize your dash controls while watching to see if anything is actually moving. You'll have to open the hood to see if the "Air" control is functioning. I have Mid America's assembly manual for the '60 Corvette and it's shown on L 190.

 

[Vette66AirCoupe]

I can fax you the diagram if it would help. Send me a private e-mail with your fax #.

 

[60vettesdr]

As always the members of this web site are incredibly knowledgeable and helpful. It's people you all of you that give our passion for a great car a good reputation.

Thanks for everyone's help.

Scott