AC to heater switching door needed. - The 1947 - Present Chevrolet & GMC Truck Message Board Network

REPO1 · 04-04-2002, 02:46 AM

I don't know what the part is supposed to be called. I need the little door inside the heater/AC box that switches from heat/defrost vents to AC vents. Can someone tell me the technical term for this item, and where I can get one? I am thinking its a wrecker only item? If so does anyone have one? I really need it!

Thanks all, thats enough questions for tonight.

Reid

------------------
Sylvan Lake, Alberta, Canada

1970 Chevy C20 Custom Camper
#s matching 402BB Turbo 400 trans.
Air conditioning, power steering, manual brakes.
73,600 Original Miles!!
(Add on 2000 more from raod trip!)

JimKshortstep4x4 · 04-04-2002, 08:42 AM

It is called a diverter box and you can buy them new and used (at times). There is a way to repair them if you can do a clever welding job. The door separates from the hinge pin because it is made of plastic with a bonded on rubber seal.

We rivet a piece of sheet metal to the door
and then weld the sheet metal to the hinge
pin and this makes a pretty permanent repair.

Jim

johnnyp · 04-04-2002, 09:00 AM

I don't know of anywhere you can buy just the flapper door. Several places sell the divertor box, but it ain't cheap (over $50). I thought about repairing mine but it looked like you would have to practically saw the divertor box in half to get to the flap, so I just bit the bullet and bought a new box.

------------------
72 Sierra Grande - "Maych"
sierraG on some boards

If a man speaks in the middle of a forest and there is no woman around to hear him, is he still wrong?

Forget about "do it right the first time". Do it wrong the first time to learn how, then do it right the second time.

Maych Home Page

REPO1 · 04-04-2002, 10:11 AM

Thanks for the tip. I guess I will try that myself. I was just hoping to buy one somewhere. That was a real marketing genius who decided to make it a plastic door and metal hinge.

Well to look at the bright side, I now have a complete understanding on how the sytem works!

------------------
Sylvan Lake, Alberta, Canada

1970 Chevy C20 Custom Camper
#s matching 402BB Turbo 400 trans.
Air conditioning, power steering, manual brakes.
73,600 Original Miles!!
(Add on 2000 more from raod trip!)

Cal69Chevy · 04-04-2002, 10:38 AM

If the flapper (diverter baffle) is still there and it's just the hinge that is broken, as was the case with mine, I just cut some plast that was the same width and about two inches long and got some epoxy and smothered the flapper and then the plastic braces and held them in place until they set...it's been working fine ever since.

I know I saw replaces boxes for under $100 new as some of the online old chevy truck stores.

Good luck,

Ken

REPO1 · 04-04-2002, 12:03 PM

Ya, its broken right where the plastic meets the metal rod, kinda under the rubber.

I think i will disassemble it and see if I can repair or make something before I try and buy a new one.

Reid

Cal69Chevy · 04-04-2002, 05:57 PM

ttt

Repo...that's exactly how mine was broken...make sure that you work with the hinge itself to free it up and make it move as easily as possible...then just do what i did (two pieces of plastic and epoxy the heck out of it)...it will work and will save you $100. I cut back that rubber on the hinge a bit so I could get epoxy in the hinge area (where the plastic meets the metal rod) and then put the plasitc pieces as much over the hinge as possible and still have it move correctly. Good luck and let us know how it goes.

Ken

*Gee_Emm* · 04-04-2002, 11:48 PM

I think all of the A/C systems I have gotten had that piece broken, I epoxyed one back together and it held well. That 2 part epoxy works wonders on some things.

------------------
1969 Chevrolet Custom Camper 20 350/400 70k original miles

They have the Internet on Computers now? --Homer Simpson

Gee_Emm's Page

Help me get my truck on a soda bottle!!!!!

**Richard** · 04-05-2002, 10:48 PM

Did you try your local Chevy dealer? One local dealer here has 3 on the shelf. The duct can be ordered if the dealer does not have it in stock. It is refered to as the air selector duct. If you know somebody that can get you a discount the original GM part can be had for less than most of the aftermarket venders sell reproductions for.

------------------
Richard
1972 K10 Custom Deluxe SWB Fleetside

**GMCPaul** · 04-06-2002, 04:50 AM

Richard the aftermarket dealers are selling the GM original air selector's ( diverter box is actual name) there are no reproductions of these. I know we carry them.
GMCPaul

------------------
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04-04-2002, 02:46 AM	#1
REPO1 Shortbox wanna-be. Join Date: Mar 2002 Location: Fort St.John, British Columbia, Canada Posts: 773	AC to heater switching door needed. I don't know what the part is supposed to be called. I need the little door inside the heater/AC box that switches from heat/defrost vents to AC vents. Can someone tell me the technical term for this item, and where I can get one? I am thinking its a wrecker only item? If so does anyone have one? I really need it! Thanks all, thats enough questions for tonight. Reid ------------------ Sylvan Lake, Alberta, Canada 1970 Chevy C20 Custom Camper #s matching 402BB Turbo 400 trans. Air conditioning, power steering, manual brakes. 73,600 Original Miles!! (Add on 2000 more from raod trip!) __________________ 1970 Chevy C20 Custom Camper 402BB Turbo 400 trans. (Slowly becoming a '70 shortbox 1/2 ton) '71 Camaro SS 402/T400 resto '97 Z28 (11.41@127MPH)

04-04-2002, 08:42 AM	#2
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	It is called a diverter box and you can buy them new and used (at times). There is a way to repair them if you can do a clever welding job. The door separates from the hinge pin because it is made of plastic with a bonded on rubber seal. We rivet a piece of sheet metal to the door and then weld the sheet metal to the hinge pin and this makes a pretty permanent repair. Jim __________________ 1971 Shortbox step side 4x4, 350 sbc, 3:07 rear end 1965 Impala SS 400 sbc, Muncie rock crusher 1966 Impala SS 396 bbc, TH 400 1969 El Camino, 350 sbc, TH 350 1971 Snowplow built on a Blazer frame 1972 GMC Short bed, stepside, TH 400, 427 BBC

04-04-2002, 09:00 AM	#3
johnnyp Keepin' It Stock Join Date: Aug 2001 Location: Grand Island, Nebraska, USA Posts: 554	I don't know of anywhere you can buy just the flapper door. Several places sell the divertor box, but it ain't cheap (over $50). I thought about repairing mine but it looked like you would have to practically saw the divertor box in half to get to the flap, so I just bit the bullet and bought a new box. ------------------ 72 Sierra Grande - "Maych" sierraG on some boards If a man speaks in the middle of a forest and there is no woman around to hear him, is he still wrong? Forget about "do it right the first time". Do it wrong the first time to learn how, then do it right the second time. Maych Home Page __________________ 72 Sierra Grande - Maych Forget about "do it right the first time". Do it wrong the first time to learn how, then do it right the second time.

04-04-2002, 10:11 AM	#4
REPO1 Shortbox wanna-be. Join Date: Mar 2002 Location: Fort St.John, British Columbia, Canada Posts: 773	Thanks for the tip. I guess I will try that myself. I was just hoping to buy one somewhere. That was a real marketing genius who decided to make it a plastic door and metal hinge. Well to look at the bright side, I now have a complete understanding on how the sytem works! ------------------ Sylvan Lake, Alberta, Canada 1970 Chevy C20 Custom Camper #s matching 402BB Turbo 400 trans. Air conditioning, power steering, manual brakes. 73,600 Original Miles!! (Add on 2000 more from raod trip!) __________________ 1970 Chevy C20 Custom Camper 402BB Turbo 400 trans. (Slowly becoming a '70 shortbox 1/2 ton) '71 Camaro SS 402/T400 resto '97 Z28 (11.41@127MPH)

04-04-2002, 10:38 AM	#5
Cal69Chevy Registered User Join Date: Nov 2001 Location: SoCal Posts: 136	If the flapper (diverter baffle) is still there and it's just the hinge that is broken, as was the case with mine, I just cut some plast that was the same width and about two inches long and got some epoxy and smothered the flapper and then the plastic braces and held them in place until they set...it's been working fine ever since. I know I saw replaces boxes for under $100 new as some of the online old chevy truck stores. Good luck, Ken __________________ '69 Chevy, 4X4-SB 350 TBI-TH350 Trans-205 Transfer Case-Dana 44 Front-14 Bolt Rear-Front Disc Brakes-Factory A/C-P/S Ken's '69 Page

04-04-2002, 12:03 PM	#6
REPO1 Shortbox wanna-be. Join Date: Mar 2002 Location: Fort St.John, British Columbia, Canada Posts: 773	Ya, its broken right where the plastic meets the metal rod, kinda under the rubber. I think i will disassemble it and see if I can repair or make something before I try and buy a new one. Reid __________________ 1970 Chevy C20 Custom Camper 402BB Turbo 400 trans. (Slowly becoming a '70 shortbox 1/2 ton) '71 Camaro SS 402/T400 resto '97 Z28 (11.41@127MPH)

04-04-2002, 05:57 PM	#7
Cal69Chevy Registered User Join Date: Nov 2001 Location: SoCal Posts: 136	ttt Repo...that's exactly how mine was broken...make sure that you work with the hinge itself to free it up and make it move as easily as possible...then just do what i did (two pieces of plastic and epoxy the heck out of it)...it will work and will save you $100. I cut back that rubber on the hinge a bit so I could get epoxy in the hinge area (where the plastic meets the metal rod) and then put the plasitc pieces as much over the hinge as possible and still have it move correctly. Good luck and let us know how it goes. Ken __________________ '69 Chevy, 4X4-SB 350 TBI-TH350 Trans-205 Transfer Case-Dana 44 Front-14 Bolt Rear-Front Disc Brakes-Factory A/C-P/S Ken's '69 Page

04-04-2002, 11:48 PM	#8
Gee_Emm Account Suspended Join Date: Sep 2000 Posts: 3,991	I think all of the A/C systems I have gotten had that piece broken, I epoxyed one back together and it held well. That 2 part epoxy works wonders on some things. ------------------ 1969 Chevrolet Custom Camper 20 350/400 70k original miles They have the Internet on Computers now? --Homer Simpson Gee_Emm's Page Help me get my truck on a soda bottle!!!!!

04-05-2002, 10:48 PM	#9
Richard Senior Member Join Date: Dec 1999 Location: Southern California Posts: 2,881	Did you try your local Chevy dealer? One local dealer here has 3 on the shelf. The duct can be ordered if the dealer does not have it in stock. It is refered to as the air selector duct. If you know somebody that can get you a discount the original GM part can be had for less than most of the aftermarket venders sell reproductions for. ------------------ Richard 1972 K10 Custom Deluxe SWB Fleetside __________________ Richard 1972 K10 Custom Deluxe SWB Fleetside My build https://67-72chevytrucks.com/vboard/...d.php?t=800746

04-06-2002, 04:50 AM	#10
GMCPaul Senior Member Join Date: Mar 2000 Location: Rockville,In. USA Posts: 3,721	Richard the aftermarket dealers are selling the GM original air selector's ( diverter box is actual name) there are no reproductions of these. I know we carry them. GMCPaul ------------------ Online Catalog for-GMCPauls Truck Parts.com 67 LWB GMC SuperCustom Fleetside 67 LWB GMC Stepside 67 SWB GMC Stepside 67 SWB GMC Fleetside 67 SWB Chevy CST Fleetside 67 LWB Chevy CST Fleet 67 SWB Chevy Stepside 67 LWB Chevy Stepside 68 2wd Chevy 1/2 t. Panel 68 Chevy Panel 1/2Ton 4X4 68 LWB Chevy Fleet 4X4 69 SWB Chevy Stepside 71 GMC Suburban 402/400 72 LWB Chevy Camper Special 72 LWB Chevy Camper Special Nope not a typo 2-72 Camper Specials and no they are NOT FOR SALE MINE MINE MINE and we accept ALL 67 Refugees Looking For More Never Enough!!! __________________ Secure Online Catalog for-GMCPauls Truck Parts Email- GMCPAULS@GMAIL.COM



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