Heater cable adjustment
Thread Starter
Cruising
Joined: Nov 2009
Posts: 13
Likes: 0
From: Ontario
Heater cable adjustment
The small door at the heater core that regulates the heat into the cabin of my '75 C3 roadster does not close completely even though the control in the car is in the full off position. This car has no air conditioning. How do I adjust the control cable so the door will fully close? 
Last edited by 75roadster; Oct 17, 2011 at 05:52 PM.
Instructor
Joined: Oct 2009
Posts: 180
Likes: 0
From: Lakefield Ontario
This is an easy fix, if you look towards the two ends of the cable, you will notice a clamp at each end, lossen the clamps with the cable attached to the door and adjustment lever.
Move the door to the closed position, tighten both clamps and you're done!
Make sure the door moves easily, there is a lot of drag due to the design.
Move the door to the closed position, tighten both clamps and you're done!
Make sure the door moves easily, there is a lot of drag due to the design.
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
many of us add shut off valves to the heater core to stop the flow of hot water. its just one more way of keeping the inside cool.
