68 heater control
Thread Starter
Instructor
Joined: Aug 2016
Posts: 172
Likes: 2
68 heater control
Hi all,
I'm trying to recreate a working heating system in a 68 better that has had the system stripped out.
I've got a service manual and a Haynes guide, but neither appears to have an end to end diagram/schematic of the components required.
Added to this, by looking at ecklers and other suppliers, it seems that the 68 heater control system was different to the later systems? How?
What do I need to get a 68 heater control working? Is it a fan switch and 2 cables, or more?
Many thanks for any guidance!
Dave
I'm trying to recreate a working heating system in a 68 better that has had the system stripped out.
I've got a service manual and a Haynes guide, but neither appears to have an end to end diagram/schematic of the components required.
Added to this, by looking at ecklers and other suppliers, it seems that the 68 heater control system was different to the later systems? How?
What do I need to get a 68 heater control working? Is it a fan switch and 2 cables, or more?
Many thanks for any guidance!
Dave
Team Owner
Joined: Sep 2006
Posts: 31,214
Likes: 4,301
From: Westminster Maryland
Hi Dave,
It's a bit difficult to answer without knowing just what parts of the system you have and what might be missing.
Inside the hater box attached to the interior side of the firewall is the heater core to supply the heat and 2 doors that are operated by the heater/defroster control.
The right side wheel on the controller determines if the system produces hot or cold air by moving a door in the heater box with a cable.
The left side wheel of the controller determines if the flow of air (either hot or cold) is at your feet (heater), at the windshield (defroster), or both, by use of vacuum pot mounted on the heater box..
The switch of course controls the fan to furnish the air supply.
Does that help?
Regards,
Alan
It's a bit difficult to answer without knowing just what parts of the system you have and what might be missing.
Inside the hater box attached to the interior side of the firewall is the heater core to supply the heat and 2 doors that are operated by the heater/defroster control.
The right side wheel on the controller determines if the system produces hot or cold air by moving a door in the heater box with a cable.
The left side wheel of the controller determines if the flow of air (either hot or cold) is at your feet (heater), at the windshield (defroster), or both, by use of vacuum pot mounted on the heater box..
The switch of course controls the fan to furnish the air supply.
Does that help?
Regards,
Alan
Last edited by Alan 71; Sep 10, 2016 at 04:49 PM.
Thread Starter
Instructor
Joined: Aug 2016
Posts: 172
Likes: 2
Yes, thanks... I think the confusion is around something I saw on one of the parts websites which suggested that the 68 heater control did not have vacuum valves, whereas all the later ones clearly did... Perhaps it was wrong?
Team Owner
Joined: Sep 2006
Posts: 31,214
Likes: 4,301
From: Westminster Maryland
Hi Dave,
I believe the 68 uses a vacuum system for the air delivery function.
Regards,
Alan
http://repairs.willcoxcorvette.com/?...heater+control
I believe the 68 uses a vacuum system for the air delivery function.
Regards,
Alan
http://repairs.willcoxcorvette.com/?...heater+control
Le Mans Master
Joined: Jan 2001
Posts: 6,719
Likes: 1,376
here is a pic of my 68 non ac heater box -see post 16
