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trying to understand the ac system [message #221607] Sun, 08 September 2013 09:43 Go to next message
appie is currently offline  appie   Denmark
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Trying to understand the system bit by bit
Took out the carpet, passengerside. hidden by the carpet is a outlet from the black box in the front witch is vacuum activated.
Obviously it could not do anything with the carpet covering it.

What is it supposed to do ?

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: trying to understand the ac system [message #221613 is a reply to message #221607] Sun, 08 September 2013 10:05 Go to previous messageGo to next message
A Hamilto is currently offline  A Hamilto   United States
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appie wrote on Sun, 08 September 2013 09:43

Trying to understand the system bit by bit
Took out the carpet, passengerside. hidden by the carpet is a outlet from the black box in the front witch is vacuum activated.
Obviously it could not do anything with the carpet covering it.

What is it supposed to do ?
Might be fresh air inlet if it does not have any dash ductwork run to it.

My 73 CanyonLands that came from the factory without dash air conditioning has a fresh air vent like that on each side.

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Re: [GMCnet] trying to understand the ac system [message #221619 is a reply to message #221607] Sun, 08 September 2013 10:21 Go to previous messageGo to next message
Emery Stora is currently offline  Emery Stora   United States
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If you are referring to a opening by the floor below the glovebox, on mine that is not an outlet it is an inlet drawing air from the motorhome to recirculate it.

I have propped it permanently open and closed off the outside air intake opening at the outside front and top of the heater box.

It runs much cooler that way.

Emery Stora

On Sep 8, 2013, at 8:43 AM, lenze middelberg <lenze@middelberg.dk> wrote:

>
>
> Trying to understand the system bit by bit
> Took out the carpet, passengerside. hidden by the carpet is a outlet from the black box in the front witch is vacuum activated.
> Obviously it could not do anything with the carpet covering it.
>
> What is it supposed to do ?
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
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Re: trying to understand the ac system [message #221621 is a reply to message #221607] Sun, 08 September 2013 10:31 Go to previous messageGo to next message
appie is currently offline  appie   Denmark
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yes Emmery underneath the glovecompartment

I just found it in the partsmanual page 306 where it is called: duct, heather and airconditioner,( lower RH)

Looks like there should be a vent, thats missing


Interesting! So much to learn!

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: [GMCnet] trying to understand the ac system [message #221623 is a reply to message #221621] Sun, 08 September 2013 10:34 Go to previous messageGo to next message
Emery Stora is currently offline  Emery Stora   United States
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No vent. It just is an opening into the blower fan area to allow it to draw inside air into the fan and recirculate it.

Emery Stora

On Sep 8, 2013, at 9:31 AM, lenze middelberg <lenze@middelberg.dk> wrote:

>
>
> yes Emmery underneath the glovecompartment
>
> I just found it in the partsmanual page 306 where it is called: duct, heather and airconditioner,( lower RH)
>
> Looks like there should be a vent, thats missing
>
>
> Interesting! So much to learn!
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
> _______________________________________________
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Re: [GMCnet] trying to understand the ac system [message #221625 is a reply to message #221621] Sun, 08 September 2013 10:37 Go to previous messageGo to next message
Mr ERFisher is currently offline  Mr ERFisher   United States
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have you read this?
http://www.gmcws.org/Tech/air_conditioning/air_conditing.html

gene


On Sun, Sep 8, 2013 at 8:31 AM, lenze middelberg <lenze@middelberg.dk>wrote:

>
>
> yes Emmery underneath the glovecompartment
>
> I just found it in the partsmanual page 306 where it is called: duct,
> heather and airconditioner,( lower RH)
>
> Looks like there should be a vent, thats missing
>
>
> Interesting! So much to learn!
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
Gene Fisher -- 74-23,77PB/ore/ca
“Give a man a fish; you have fed him for today --- give him a URL and
-------
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http://gmcmotorhome.info/APC.html
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Re: [GMCnet] trying to understand the ac system [message #221633 is a reply to message #221625] Sun, 08 September 2013 12:17 Go to previous messageGo to next message
appie is currently offline  appie   Denmark
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I am reading this but can only digest a bit at the timer

Emmery should I read the parts book in the way that " duct for heather and aircon" means "intake for recycling" ?

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: [GMCnet] trying to understand the ac system [message #221638 is a reply to message #221633] Sun, 08 September 2013 13:48 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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There are intake ducts and outflow ducts. Please tell me what page and part number or diagram you are referring to.

Emery Stora

On Sep 8, 2013, at 11:17 AM, lenze middelberg wrote:

>
>
> I am reading this but can only digest a bit at the timer
>
> Emmery should I read the parts book in the way that " duct for heather and aircon" means "intake for recycling" ?
>
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
> _______________________________________________
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Re: trying to understand the ac system [message #221660 is a reply to message #221607] Sun, 08 September 2013 15:35 Go to previous messageGo to next message
appie is currently offline  appie   Denmark
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Emmery. Iam at partsbook 76 page 306 part 14 partsnumber 702554

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: [GMCnet] trying to understand the ac system [message #221667 is a reply to message #221633] Sun, 08 September 2013 15:54 Go to previous messageGo to next message
emerystora is currently offline  emerystora   United States
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Lenze
Sorry for the confusion. I was not thinking that I have a 1977 and you have a 1976. In my motorhome I have an opening low by the floor on the left side of the glovebox which leads to the blower for recirculation. Yours duct does not have that. The duct that you are referring to is the one that Zay Brand cuts into the outside of it and runs a hose to the front of your heater box to give air recirculation.

Have you downloaded Zay Brands "Separating Heat from Cold". You should make that modification to give better cooling in your GMC. That basically adds the feature that is in the 1977 and 1978 coaches.


Emery Stora
77 Kingsley
Frederick, CO

On Sep 8, 2013, at 11:17 AM, lenze middelberg wrote:

>
>
> I am reading this but can only digest a bit at the timer
>
> Emmery should I read the parts book in the way that " duct for heather and aircon" means "intake for recycling" ?
>
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
> _______________________________________________
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> Unsubscribe or Change List Options:
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Re: trying to understand the ac system [message #221729 is a reply to message #221607] Sun, 08 September 2013 23:04 Go to previous messageGo to next message
appie is currently offline  appie   Denmark
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I am studying this writeup, but am slow at understanding it
What does my duct do as it is ?

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: trying to understand the ac system [message #221920 is a reply to message #221607] Tue, 10 September 2013 10:50 Go to previous messageGo to next message
appie is currently offline  appie   Denmark
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Is there anybody with a idear what this duct does?

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: [GMCnet] trying to understand the ac system [message #221922 is a reply to message #221920] Tue, 10 September 2013 10:58 Go to previous messageGo to next message
zeke20 is currently offline  zeke20   United States
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Do You have a picture? Where is it located?

Kay H.Zupke
Houston TX
75' Eleganza II

On Sep 10, 2013, at 10:50, lenze middelberg <lenze@middelberg.dk> wrote:

>
>
> Is there anybody with a idear what this duct does?
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
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Re: [GMCnet] trying to understand the ac system [message #221923 is a reply to message #221922] Tue, 10 September 2013 11:07 Go to previous messageGo to next message
appie is currently offline  appie   Denmark
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Sorry I cant get my picts så down to 1 Kb
The duct is in the bottem of the firewall to the right of the glovecompartment
From the front it is a black square box with a vacuum activator just left of the isolator

Appie eleganza 76 "Olga" now sadly sold 6 wheel discbrake Quadrabags Springfield stage 2 462 olds Manny tranny ( pictures at http://www.gmcmhphotos.com/photos/g6489-olga.html Fulltiming in Europe july 2014 til july 2016 Denmark

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Re: trying to understand the ac system [message #221925 is a reply to message #221660] Tue, 10 September 2013 11:11 Go to previous messageGo to next message
A Hamilto is currently offline  A Hamilto   United States
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appie wrote on Sun, 08 September 2013 15:35

Emmery. Iam at partsbook 76 page 306 part 14 partsnumber 702554
Looks like the air conditioning duct to me. When the dash control is on heater, the vacuum acuator is one way, ducting air to the floor. In A/C, the vacuum actuator would push air out the dash vents.

The one on the Driver's side that does the same thing is in the exploded view next to it in figure 26.035

If you look at the vacuum line picture in the MM, there are two of them. The drawing in my Maintenance Manual is the same as what Ken H. posted. The brown vacuum lines in the picture are the ones that control the actuator for the vent you are asking about and the one on the driver's side.

http://www.gmcmhphotos.com/photos/data/4637/1637_p19228.jpg
http://www.gmcmhphotos.com/photos/data/4637/1637_p19228.jpg

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Re: [GMCnet] trying to understand the ac system [message #221938 is a reply to message #221923] Tue, 10 September 2013 12:03 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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Appie,
Set your camera resolution up for 640 X 480 size picture. That is what most of us use for the photo site. Most if not all pictures will be under 1 meg (1000K).

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

On Sep 10, 2013, at 12:07 PM, lenze middelberg <lenze@middelberg.dk> wrote:

>
>
> Sorry I cant get my picts så down to 1 Kb
> The duct is in the bottem of the firewall to the right of the glovecompartment
> From the front it is a black square box with a vacuum activator just left of the isolator
> --
> Appie
> eleganza 76
> Volvo v70
> Denmark
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan

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Re: [GMCnet] trying to understand the ac system [message #221939 is a reply to message #221938] Tue, 10 September 2013 12:21 Go to previous messageGo to next message
A Hamilto is currently offline  A Hamilto   United States
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powerjon wrote on Tue, 10 September 2013 12:03

Appie,
Set your camera resolution up for 640 X 480 size picture. That is what most of us use for the photo site. Most if not all pictures will be under 1 meg (1000K).

JR Wright
78 Buskirk Stretch
75 Avion
Michigan
He wanted to attach a photo to his post, but the forum attachment size limit is 1k. If he wanted to post on the photo site, he would have to register, yada, yada, yada, and that might be more effort than he wanted to expend.

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Re: [GMCnet] trying to understand the ac system [message #221947 is a reply to message #221939] Tue, 10 September 2013 12:38 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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Yep, it take less than 5 minutes to register for the photo site. Appie, you should have your own albums at the photo site for all to see.
http://www.gmcnet.org/gmcnetguidelines.html#RULE6

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

On Sep 10, 2013, at 1:21 PM, A. <markbb1@netzero.com> wrote:

>
>
> powerjon wrote on Tue, 10 September 2013 12:03
>> Appie,
>> Set your camera resolution up for 640 X 480 size picture. That is what most of us use for the photo site. Most if not all pictures will be under 1 meg (1000K).
>>
>> JR Wright
>> 78 Buskirk Stretch
>> 75 Avion
>> Michigan
> He wanted to attach a photo to his post, but the forum attachment size limit is 1k. If he wanted to post on the photo site, he would have to register, yada, yada, yada, and that might be more effort than he wanted to expend.
> --
> '73 23' Sequoia For Camping
> '73 23' CanyonLands For Sale
> UA (Upper Alabama)
> "Time is money. If you use YOUR time, you get to keep YOUR money."
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GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan

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Re: [GMCnet] trying to understand the ac system [message #221949 is a reply to message #221947] Tue, 10 September 2013 12:42 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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I am sorry, WRONG PLACE! Pushed the wrong button. Appie try this instead.
http://www.gmcmhphotos.com

JR Wright
78 Buskirk Stretch
75 Avion
Michigan

On Sep 10, 2013, at 1:38 PM, John Wright <powerjon@chartermi.net> wrote:

> Yep, it take less than 5 minutes to register for the photo site. Appie, you should have your own albums at the photo site for all to see.
> http://www.gmcnet.org/gmcnetguidelines.html#RULE6
>
> JR Wright
> 78 Buskirk Stretch
> 75 Avion
> Michigan
>
> On Sep 10, 2013, at 1:21 PM, A. <markbb1@netzero.com> wrote:
>
>>
>>
>> powerjon wrote on Tue, 10 September 2013 12:03
>>> Appie,
>>> Set your camera resolution up for 640 X 480 size picture. That is what most of us use for the photo site. Most if not all pictures will be under 1 meg (1000K).
>>>
>>> JR Wright
>>> 78 Buskirk Stretch
>>> 75 Avion
>>> Michigan
>> He wanted to attach a photo to his post, but the forum attachment size limit is 1k. If he wanted to post on the photo site, he would have to register, yada, yada, yada, and that might be more effort than he wanted to expend.
>> --
>> '73 23' Sequoia For Camping
>> '73 23' CanyonLands For Sale
>> UA (Upper Alabama)
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan

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Re: [GMCnet] trying to understand the ac system [message #221950 is a reply to message #221949] Tue, 10 September 2013 12:52 Go to previous messageGo to previous message
A Hamilto is currently offline  A Hamilto   United States
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powerjon wrote on Tue, 10 September 2013 12:42

I am sorry, WRONG PLACE! Pushed the wrong button. Appie try this instead.
http://www.gmcmhphotos.com

JR Wright
78 Buskirk Stretch
75 Avion
Michigan
Start here

http://gmc.mybirdfeeder.net/GMCforum/index.php?t=msg&goto=198344&rid=2083&srch=register+photo+site#msg_198344

And that will provide more details. Rob also points to J Harper's "tutorial".

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