| How do you get the AC evap out?? [message #138262] |
Wed, 10 August 2011 11:28  |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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I dug into my AC unit last night.
Pulled the heater core and tried to pull the evap.
This is on a '75 transmode with a recirculation Door
I found 6 screws holding it all together, 2 up by the Fan, 2 on the drivers side under the heater core and 2 holding the metal lines onto the airbox.
It still wouldn't budge.
What am I missing? Did GM use those special high inaccessiem screws again?
I did loosen the bottom of the box and felt behind the evaporator and it feels clean, and blowing compressed air though it only blew out a few bugs. So I may not NEED to remove it....
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] How do you get the AC evap out?? [message #138263 is a reply to message #138262] |
Wed, 10 August 2011 11:42  |
Ken Henderson
Messages: 8726
Registered: March 2004
Location: Americus, GA
Karma: 9
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Senior Member |
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Keith,
When I removed my evaporator, I had to use a sharp putty knife to cut
through the tar-like material sealing it top and bottom. I don't remember
how many screws were holding it, but some of them were found by the probing
putty knife. Heating the knife blade might help with the cutting -- if the
handle's not plastic. Maybe a heat gun directed at the tar too? Or come
here and the tar will probably run out by itself. :-)
Ken H.
On Wed, Aug 10, 2011 at 12:28 PM, Keith V <my427v8@hotmail.com> wrote:
>
>
> I dug into my AC unit last night.
> Pulled the heater core and tried to pull the evap.
>
> This is on a '75 transmode with a recirculation Door
>
> I found 6 screws holding it all together, 2 up by the Fan, 2 on the drivers
> side under the heater core and 2 holding the metal lines onto the airbox.
>
> It still wouldn't budge.
>
> What am I missing? Did GM use those special high inaccessiem screws again?
>
> I did loosen the bottom of the box and felt behind the evaporator and it
> feels clean, and blowing compressed air though it only blew out a few bugs.
> So I may not NEED to remove it....
> --
> Keith
>
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Ken Henderson
Americus, GA
www.gmcwipersetc.com
Large Wiring Diagrams
76 X-Birchaven
76 X-Palm Beach
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| Re: [GMCnet] How do you get the AC evap out?? [message #138270 is a reply to message #138263] |
Wed, 10 August 2011 13:05 |
jade
Messages: 163
Registered: August 2009
Karma: 0
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Senior Member |
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I used a heat gun on mine and it worked great.
I was afraid I would damage the evap. with a knife.
JADE
73 23' ?? 73 26' Painted Desert
Ajo, AZ
KC7QGC
----- Original Message -----
From: "Ken Henderson" <hend4800@bellsouth.net>
To: <gmclist@temp.gmcnet.org>
Sent: Wednesday, August 10, 2011 9:42 AM
Subject: Re: [GMCnet] How do you get the AC evap out??
> Keith,
>
> When I removed my evaporator, I had to use a sharp putty knife to cut
> through the tar-like material sealing it top and bottom. I don't remember
> how many screws were holding it, but some of them were found by the
> probing
> putty knife. Heating the knife blade might help with the cutting -- if
> the
> handle's not plastic. Maybe a heat gun directed at the tar too? Or come
> here and the tar will probably run out by itself. :-)
>
> Ken H.
>
>
> On Wed, Aug 10, 2011 at 12:28 PM, Keith V <my427v8@hotmail.com> wrote:
>
>>
>>
>> I dug into my AC unit last night.
>> Pulled the heater core and tried to pull the evap.
>>
>> This is on a '75 transmode with a recirculation Door
>>
>> I found 6 screws holding it all together, 2 up by the Fan, 2 on the
>> drivers
>> side under the heater core and 2 holding the metal lines onto the airbox.
>>
>> It still wouldn't budge.
>>
>> What am I missing? Did GM use those special high inaccessiem screws
>> again?
>>
>> I did loosen the bottom of the box and felt behind the evaporator and it
>> feels clean, and blowing compressed air though it only blew out a few
>> bugs.
>> So I may not NEED to remove it....
>> --
>> Keith
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] How do you get the AC evap out?? [message #138275 is a reply to message #138270] |
Wed, 10 August 2011 13:56 |
Keith V
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
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Senior Member |
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really? The tar along the top is that strong??
I was pulling pretty good, and the bottom is free so it must be really stuck!
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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| Re: [GMCnet] How do you get the AC evap out?? [message #138287 is a reply to message #138275] |
Wed, 10 August 2011 15:58 |
idrob
Messages: 645
Registered: January 2005
Location: Central Idaho
Karma: 0
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Senior Member |
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| Keith V wrote on Wed, 10 August 2011 11:56 |
really? The tar along the top is that strong??
I was pulling pretty good, and the bottom is free so it must be really stuck!
|
Yes the tar is that strong. Actually some kind of a tar/cork material as I recall. But a sharp putty knife will generally cut through it, if it does not instantly reseal itself.
Rob Allen
former owner of '76 x-PB
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