AC/Heater diverter box repairable? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

grebus1 · 04-19-2004, 03:05 PM

Has anyone been able to repair the flap inside the AC/Heater diverter box? This is the box inside the truck under the glove box. There is a door in the box that opens or shuts depending on whether you slide the control lever to AC or over to Heater. I have to replace the box on my Sub for the second time because the rod is spinning inside the flap and will not control it. This is not a cheap part (about $70-100)!

Blue Beard · 04-19-2004, 05:27 PM

Check out these two sites:

http://www.gmpartsdirect.com
http://www.partsoneonline.com

bought one from them new, seems like it was under $50 with ship. about 2 years ago.

Their sites won't show the parts back that far....but use the part number on the flapper and they will check....

Call them, you'll get better results...

There are some postings on repairs, might try a search on the topic...

drink2mny · 04-19-2004, 05:36 PM

Is this what your looking for???
This is a good working used one
I had/have this on the parts board for $45.00 plus S&H

Blue Beard · 04-19-2004, 05:44 PM

That's what he's looking for, did you rebuild that one..?

grebus1 · 04-19-2004, 06:17 PM

Yeah, I'm not really looking for another one, drink2mny. I was more trying to get an idea if they are repairable since this will be the 2nd time I've replaced the box for the same reason.

mrein3 · 04-19-2004, 07:05 PM

I pop riveted a piece of tin on the plastic "flapper". I then spot welded the tin flap to the metal rod that the plastic flapper is supposed to be attached to. Of course you have to cut away some rubber where you make your spot welds.

drink2mny · 04-19-2004, 08:54 PM

Quote:

Originally posted by Blue Beard
That's what he's looking for, did you rebuild that one..?

Nope just got pretty lucky parting out a '72..

Hey no prob grebus1

Was just letting ya know. Hope you get it to work.
And maybe post what and where you got to do it..

JimKshortstep4x4 · 04-19-2004, 08:57 PM

We have repaired three like Mrein3 described and it is a strong repair.

Jim

Woody · 04-20-2004, 10:42 AM

I have repaired one using 2 part Epoxy Glue. I first glued another piece of plastic on to the flap to make it stronger. Then Glued it all to the shaft....let set a few days... Its held up to over 14 yrs.

Good Luck

mtdave2 · 04-20-2004, 11:00 AM

i did the gule too, just used 2 large metal washers. been working over 3 years now,

cheyenne10 · 04-20-2004, 11:10 AM

I have 2 of these that are breaking but not real bad. Both great candidates for repair jobs. I've seen sheetmetal fix and it worked well. Before I found these in my parts boxes I bought new GM one. Pieces didn't seal together well and they had splashed glue all over front of box, for that price I was hoping for better qaulity control.

Will sell the 2 needing reapirs for $15/each plus shipping.

email cheyennek20@comcast.net

04-19-2004, 03:05 PM	#1
grebus1 Registered User Join Date: Feb 2000 Location: Edmonds, WA Posts: 322	AC/Heater diverter box repairable? Has anyone been able to repair the flap inside the AC/Heater diverter box? This is the box inside the truck under the glove box. There is a door in the box that opens or shuts depending on whether you slide the control lever to AC or over to Heater. I have to replace the box on my Sub for the second time because the rod is spinning inside the flap and will not control it. This is not a cheap part (about $70-100)! __________________ '72 Chevy Suburban Custom Deluxe 10, 402/TH400

04-19-2004, 05:27 PM	#2
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	Check out these two sites: http://www.gmpartsdirect.com http://www.partsoneonline.com bought one from them new, seems like it was under $50 with ship. about 2 years ago. Their sites won't show the parts back that far....but use the part number on the flapper and they will check.... Call them, you'll get better results... There are some postings on repairs, might try a search on the topic... __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

04-19-2004, 05:36 PM	#3
drink2mny Registered User Join Date: Jun 2003 Location: spokane wa Posts: 2,189	Is this what your looking for??? This is a good working used one I had/have this on the parts board for $45.00 plus S&H __________________ Support The Board

04-19-2004, 05:44 PM	#4
Blue Beard Registered User Join Date: Jan 2003 Location: Washington State Posts: 8,834	That's what he's looking for, did you rebuild that one..? __________________ 1970 Chev CST 2003 Harley Fatboy 1975 Chevrolet Step Van 1956 Chev Bel Air 1977 Blazer 2WD For Sale $3000.00 1978 Blazer 2WD For Sale $7000.00 1978 Silverado 2005 Monte Carlo

04-19-2004, 06:17 PM	#5
grebus1 Registered User Join Date: Feb 2000 Location: Edmonds, WA Posts: 322	Yeah, I'm not really looking for another one, drink2mny. I was more trying to get an idea if they are repairable since this will be the 2nd time I've replaced the box for the same reason. __________________ '72 Chevy Suburban Custom Deluxe 10, 402/TH400

04-19-2004, 07:05 PM	#6
mrein3 Registered User Join Date: Feb 2000 Location: Center City, MN, USA Posts: 3,253	I pop riveted a piece of tin on the plastic "flapper". I then spot welded the tin flap to the metal rod that the plastic flapper is supposed to be attached to. Of course you have to cut away some rubber where you make your spot welds. __________________ '70 cab, '71 chassis, 383, TH350, NP205. '71 Malibu convertible '72 Malibu hard top Center City, MN

04-19-2004, 08:57 PM	#8
JimKshortstep4x4 Senior Member Join Date: Jul 2001 Location: Muskegon,MI,USA Posts: 6,026	We have repaired three like Mrein3 described and it is a strong repair. Jim

04-20-2004, 10:42 AM	#9
Woody Registered User Join Date: Feb 2000 Location: Georgetown, KY, USA Posts: 631	I have repaired one using 2 part Epoxy Glue. I first glued another piece of plastic on to the flap to make it stronger. Then Glued it all to the shaft....let set a few days... Its held up to over 14 yrs. Good Luck

04-20-2004, 11:00 AM	#10
mtdave2 newly minted old timer Join Date: Dec 1999 Location: Hudson WI Posts: 3,508	i did the gule too, just used 2 large metal washers. been working over 3 years now, __________________ ____________________________________________ 72 c20 longhorn 65k org miles and counting! 69 k10 Suburban

04-20-2004, 11:10 AM	#11
cheyenne10 Senior Member Join Date: Apr 2000 Location: Oregon Posts: 2,512	have couple needing repair I have 2 of these that are breaking but not real bad. Both great candidates for repair jobs. I've seen sheetmetal fix and it worked well. Before I found these in my parts boxes I bought new GM one. Pieces didn't seal together well and they had splashed glue all over front of box, for that price I was hoping for better qaulity control. Will sell the 2 needing reapirs for $15/each plus shipping. email cheyennek20@comcast.net __________________ Bob



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