Quick question - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Chevyntytwo · 09-09-2009, 09:08 PM

Sorry if this is a stupid question.

I recently refurbished my HVAC controls. Just the levers. Now when trying to select between the heater on the floor and the defrost I only get defrost. All the wire pulleys are hooked up and they function.

My question is if there is some way the baffle inside the airbox can break? Also if someone has an exploded view of the airbox without AC that would help out a bunch.

Thanks.

oldblue1968chevy · 09-09-2009, 09:35 PM

order an LMC cataglog there great for exploded views of that stuff..

it may be on there website also.

Longhorn Man · 09-09-2009, 10:33 PM

so is it HVAC... or a heater?

**LockDoc** · 09-09-2009, 10:48 PM

-
The air control door in the lower part of the heater box is not working then. (closest to the floor) I have never seen one of them broken there. Are you sure the cables are hooked up correctly? I would unhook the cable on the front of the lower heater box and try working it by hand. It should be easy to tell if the door is working.

LockDoc

Chevyntytwo · 09-10-2009, 09:34 PM

Quote:

Originally Posted by LockDoc

-
The air control door in the lower part of the heater box is not working then. (closest to the floor) I have never seen one of them broken there. Are you sure the cables are hooked up correctly? I would unhook the cable on the front of the lower heater box and try working it by hand. It should be easy to tell if the door is working.

LockDoc

I can move the lever and watch the cable actuate another lever on the heater box. I cannot hear it move on the inside, and the control lever has less resistance than before. I,m up in the air on this one. I asked my old truck counselors at work today and they to are lost. At least the defrost works +. Winters would suck if it were the other way around.

You got me Longhorn Man. I have no AC, so technically it is heater controls. Being a tradesman I always use acronyms.

Dark Knight · 09-10-2009, 11:15 PM

The part that you are talking about can break. Not really break though, just slip. It's all made of metal. The lever on the heater box has a rod going through the box with a flapper valve attached. The rod could just be spinning in the valve. My suggestion would be to remove the box, then remove the rod. (There's only one there). Once you have the flapper removed, LIGHTLY tap the holes in the flapper where the rod passes through. This will keep the rod from spinning. Put the flapper in the box, shove the rod back through, bolt the box back up, and you're set. I had this problem when I bought a secondhand heater box. I'll try to post pics up tomorrow if I think about it... Sorry for the long post, but I like to give accurate descriptions.

*highperf4x4* · 09-10-2009, 11:38 PM

Quote:

Originally Posted by Dark Knight

The part that you are talking about can break. Not really break though, just slip. It's all made of metal. The lever on the heater box has a rod going through the box with a flapper valve attached. The rod could just be spinning in the valve. My suggestion would be to remove the box, then remove the rod. (There's only one there). Once you have the flapper removed, LIGHTLY tap the holes in the flapper where the rod passes through. This will keep the rod from spinning. Put the flapper in the box, shove the rod back through, bolt the box back up, and you're set. I had this problem when I bought a secondhand heater box. I'll try to post pics up tomorrow if I think about it... Sorry for the long post, but I like to give accurate descriptions.

I think I need to do mine too.

Longhorn Man · 09-10-2009, 11:20 PM

the heater system only shares a few parts with a heat/ac system... thats why I asked.

Chevyntytwo · 09-11-2009, 07:06 PM

Thanks Bruce Wayne!!! I'll give her a good teardown.

cdowns · 09-11-2009, 07:14 PM

it might help if you told what year and model truck your asking about// the flapper in the divertor box breaks commonly

Chevyntytwo · 09-11-2009, 10:18 PM

Quote:

Originally Posted by cdowns

it might help if you told what year and model truck your asking about// the flapper in the divertor box breaks commonly

72 k20 Cheyenne Super 350 Turbo 400 Dana 44 Front / 60 Rear NP 208. 315 70 17 Hummer H2 wheels. Black.

http://67-72chevytrucks.com/vboard/a...5&d=1240364828

http://67-72chevytrucks.com/vboard/a...4&d=1240364828

retodd7711 · 09-11-2009, 10:23 PM

Not to hijack this thread, but.
We definitely need more pics of that sharp ride!

Chevyntytwo · 09-11-2009, 10:31 PM

Quote:

Originally Posted by retodd7711

Not to hijack this thread, but.
We definitely need more pics of that sharp ride!

Soon!!!

Let me wash it in the morning, and shoot it on the backdrop of a Colorado sunset. Tomorrow brother tomorrow.

09-09-2009, 09:08 PM	#1
Chevyntytwo Registered User Join Date: Jan 2009 Location: Colorado Springs Colorado Posts: 31	Quick question Sorry if this is a stupid question. I recently refurbished my HVAC controls. Just the levers. Now when trying to select between the heater on the floor and the defrost I only get defrost. All the wire pulleys are hooked up and they function. My question is if there is some way the baffle inside the airbox can break? Also if someone has an exploded view of the airbox without AC that would help out a bunch. Thanks.

09-09-2009, 09:35 PM	#2
oldblue1968chevy Grandpa in the rustmobile... Join Date: Nov 2008 Location: Spokane WA/Viola TN Posts: 11,422	Re: Quick question order an LMC cataglog there great for exploded views of that stuff.. it may be on there website also. __________________ John Goose-1968 C10 355,9.32-1CR, Vortec Heads ,262 voodoo, 3.73:1 3OTT (HS ride/beater/farm truck) http://67-72chevytrucks.com/vboard/s...d.php?t=317684 Grams 53-1953 Chevrolet Belair http://67-72chevytrucks.com/vboard/s...=1#post4327784 1969 Chevy C10 Shortbed 4.5/6?" Frame off resto http://67-72chevytrucks.com/vboard/s...d.php?t=548136 1999 Toyota Tacoma 4x4

09-09-2009, 10:33 PM	#3
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Quick question so is it HVAC... or a heater?

09-09-2009, 10:48 PM	#4
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,402	Re: Quick question - The air control door in the lower part of the heater box is not working then. (closest to the floor) I have never seen one of them broken there. Are you sure the cables are hooked up correctly? I would unhook the cable on the front of the lower heater box and try working it by hand. It should be easy to tell if the door is working. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -

09-10-2009, 11:15 PM	#6
Dark Knight Registered User Join Date: Dec 2008 Location: Pleak, Texas Posts: 420	Re: Quick question The part that you are talking about can break. Not really break though, just slip. It's all made of metal. The lever on the heater box has a rod going through the box with a flapper valve attached. The rod could just be spinning in the valve. My suggestion would be to remove the box, then remove the rod. (There's only one there). Once you have the flapper removed, LIGHTLY tap the holes in the flapper where the rod passes through. This will keep the rod from spinning. Put the flapper in the box, shove the rod back through, bolt the box back up, and you're set. I had this problem when I bought a secondhand heater box. I'll try to post pics up tomorrow if I think about it... Sorry for the long post, but I like to give accurate descriptions. __________________ -1967 Chevrolet Fleetside LWB- 350 V8 w/thumpr cam, NV3500, 3.08 gears, A/C, PS -1983 Chevy Silverado C1500- 383 stroker, TH400 -1989 Chevy Silverado K1500 SWB- 5.3L swap, 700R4, 3.42 gears -And a '66 Ford Mustang- 200 I6, C4 trans, rust bucket "The only thing we have to fear is fear itself." -FDR (and maybe rust too) You've gotta be able to stop and steer before you can go fast!

09-10-2009, 11:20 PM	#8
Longhorn Man its all about the +6 inches Join Date: Jan 2001 Location: Hilliard Ohio Posts: 2,693	Re: Quick question the heater system only shares a few parts with a heat/ac system... thats why I asked.

09-11-2009, 07:06 PM	#9
Chevyntytwo Registered User Join Date: Jan 2009 Location: Colorado Springs Colorado Posts: 31	Re: Quick question Thanks Bruce Wayne!!! I'll give her a good teardown.

09-11-2009, 07:14 PM	#10
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: Quick question it might help if you told what year and model truck your asking about// the flapper in the divertor box breaks commonly __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY Last edited by cdowns; 09-11-2009 at 07:15 PM.

09-11-2009, 10:23 PM	#12
retodd7711 chrome makes it go FASTER! Join Date: Feb 2007 Location: Cleveland Tennessee Posts: 2,884	Re: Quick question Not to hijack this thread, but. We definitely need more pics of that sharp ride! __________________ She can't cook and she won't clean. But she looks good in a skirt and she brings me beer. She can stay for now. EDIT:: But she left me anyway, So forget her. 1962 GMC Stepside V6 4 speed My rolling resto thread http://67-72chevytrucks.com/vboard/s...d.php?t=324226 My old farm truck http://67-72chevytrucks.com/vboard/s...=1#post3465005

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