Changing defroster cable

Reply Subscribe

Thread Tools

Search this Thread

Apr 2, 2017 | 05:35 PM

Tiger Joe

Thread Starter

Drifting

Joined: Nov 2016

Posts: 1,957

Likes: 576

From: Pittsburgh PA

Changing defroster cable

68 non A/C car

Need to change the cable that controls where the air is directed.

I had the lower console apart to change one of my Astro ventilation cables and see this cable is broken.

Looking at diagrams it appears the air flapper is directly behind the gauges. Is this right?

I doubt there is any way to reach it from the side, gauges have to be pulled I'm guessing?

Apr 2, 2017 | 06:08 PM

bazza77

Melting Slicks

Joined: Jul 2010

Posts: 3,176

Likes: 633

From: perth western australia

not sure of any difference between 68 and 69 but my cable snakes along the bottom of the box for most of the way to the passenger side end , so access should be from passenger side . Put your hand up under there and feel for the lever first , might even be able to see it if your a contortionist.

P.S I'm talking about the blend door ! controlled by the wheel !

If your talking about the cool air ducts , they are behind the kick panels (two little square **** on edge of console plate controls them ?

Last edited by bazza77; Apr 2, 2017 at 06:13 PM. Reason: Blend door or just cold air ?

Apr 2, 2017 | 08:31 PM

Tiger Joe

Thread Starter

Drifting

Joined: Nov 2016

Posts: 1,957

Likes: 576

From: Pittsburgh PA

I'm talking bout the blend door.

Said I just changed the Astro ventilation cable in my first post

Apr 3, 2017 | 08:36 AM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,173

Likes: 4,250

From: Westminster Maryland

Hi,

"Need to change the cable that controls where the air is directed.
I had the lower console apart to change one of my Astro ventilation cables and see this cable is broken. "

I believe this info is good for 68 cars too:
I believe the 'temperature' of the air is controlled by the right thumb wheel and a bowden cable.
I believe the 'direction' of the flow of air is controlled by the left thumb wheel, a vacuum manifold, and a hose to a vacuum pot on the left END of the air box. Another hose runs to a vacuum pot on the TOP of the air box.
There should be a total of 3 bowden cables, one for the air temperature control, and two for the kick panel vents.
Regards,
Alan

Here's the vacuum pot on the TOP of the air box, the other is similar. You cab also see the black bowden cable headed to the air temp door in the air box.

Last edited by Alan 71; Apr 3, 2017 at 09:07 AM.

Apr 3, 2017 | 09:02 AM

Tiger Joe

Thread Starter

Drifting

Joined: Nov 2016

Posts: 1,957

Likes: 576

From: Pittsburgh PA

Alan, there is no vacuum on a non A/C car.

my direction of airflow is controlled by a cable

Apr 3, 2017 | 09:10 AM

Alan 71

Team Owner

Joined: Sep 2006

Posts: 31,173

Likes: 4,250

From: Westminster Maryland

Hi TJ,
Thanks.
That's why I had the note about the info applying to 68? cars.
By 71, (maybe earlier), non a/c cars had vacuum operated control functions for the air flow direction.
Regards,
Alan

Apr 3, 2017 | 10:12 AM

bazza77

Melting Slicks

Joined: Jul 2010

Posts: 3,176

Likes: 633

From: perth western australia

Quote:

Originally Posted by Alan 71

Hi TJ,
Thanks.
That's why I had the note about the info applying to 68? cars.
By 71, (maybe earlier), non a/c cars had vacuum operated control functions for the air flow direction.
Regards,
Alan

69 had vacuum operated control, mine is 22 920 no A/C so its not early 69 if it matters

Apr 18, 2017 | 11:40 AM

Tiger Joe

Thread Starter

Drifting

Joined: Nov 2016

Posts: 1,957

Likes: 576

From: Pittsburgh PA

just to close this in case anyone is ever looking for information

The cable operated blend door on the 68 is directly behind the gauges and there is no way to access it without removing them, not matter how hard you try to twist your arm up there!