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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Topic started by: TxFiddler on January 28, 2011, 08:31:45 pm

Title: AC Question or Two
Post by: TxFiddler on January 28, 2011, 08:31:45 pm

While I am cleaning up the firewall, paint, hiding wires, etc, I noticed that the "flapper" to the fresh air is broken.  It is connected to a diaphragm that opens and closes it.  Are these available or do I need to fabricate one? 
Thanks

Title: Re: AC Question or Two
Post by: Psycho71 on January 29, 2011, 07:47:13 pm

I haven't seen the flappers available as repopped parts. You'd have to fab one, junkyard one, or catch someone parting out a truck and get it cheap. The latter is how I got replacements for my '71. .

Title: Re: AC Question or Two
Post by: VileZambonie on January 29, 2011, 07:49:28 pm

Get a donor unit

Title: Re: AC Question or Two
Post by: ehjorten on January 31, 2011, 02:19:46 pm

Are you sure it is broken?  Have you taken the heater box off of the firewall?  That door is connected to a diaphram via a small plastic piece that is bolted to the metal door.  The plastic piece is connected to a flat metal rod with a rivet.  Why do you say it is broken?  Doesn't function properly?

Title: Re: AC Question or Two
Post by: TxFiddler on January 31, 2011, 03:07:58 pm

Oh yeah, it's broken at the seam where it bends.  Junkyard time!
Thanks all.