|
|
|
02-12-2020, 09:22 PM
|
#1 |
|
Registered User
Join Date: Jul 2017
Location: Dripping Springs
Posts: 40
|
A/C comp control?
So I have had a manual switch inside my 71 4 seasons for a year now to control my compressor. I found out today there is what looks like a potentiometer off of a stove or something under the dash that will kick the compressor on or off. It does have a line coming off of it that senses temperature to control when the compressor kicks on, but I can't believe this is what came stock on the c10, unless there used to be a gear on the knob and the hot / cold slider moved it? If this is stock, what is the part called? Thanks!
Some pictures: https://imgur.com/a/9ZnSj3M PS: sorry for potato quality pictures, phone is broken so using potato. Last edited by 71C10Guy; 02-12-2020 at 09:24 PM. Reason: apology |
|
|
|
02-12-2020, 09:26 PM
|
#2 |
|
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: A/C comp control?
That was added by somebody at some point.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
|
|
|
|
02-12-2020, 10:34 PM
|
#3 | |
|
Registered User
Join Date: Jul 2017
Location: Dripping Springs
Posts: 40
|
Re: A/C comp control?
Quote:
If you know can you point me to the right part to replace then? I usually use the diagrams on lmctruck to find out what parts I need/ are called, but I can't find anything but the entire control panel. I guess they didn't make parts for it, it's just one expensive unit lol. |
|
|
|
|
|
02-12-2020, 11:38 PM
|
#4 |
|
Junior Member
 Join Date: Jul 2014
Location: Huntsville, AL
Posts: 75
|
Re: A/C comp control?
There is a compressor switch on the factory setup if that's what you're asking. It's on the back side of the AC distribution box which is the first box coming off the heater. Can't be seen from inside but if you feel behind the box you'll find the cable attachment for selection of either air or heat (the middle of the three slides on your control). When the slide is moved to the left it opens the flapper to shut off heated air and open the air from the evaporator. It also has a cam integrated with the cable end that pushes a button on the AC switch. Just changed mine yesterday while putting in a new blower relay.
|
|
|
|
|
02-13-2020, 12:06 AM
|
#5 | |
|
Registered User
Join Date: Jul 2017
Location: Dripping Springs
Posts: 40
|
Re: A/C comp control?
Quote:
Wait, I just thought of something that might make this all moot... Does the ac system used in these trucks need to cycle on and off, to keep the right pressure, or are they always on when cooling, no cycling? I might just be really dumb.... |
|
|
|
|
|
02-13-2020, 12:17 AM
|
#6 |
|
Junior Member
Join Date: Jul 2014
Location: Huntsville, AL
Posts: 75
|
Re: A/C comp control?
Like i said. There is a switch. It's operated off the end of the cable that also operates the flapper. No cycling. Simple on/off. Available from Brothers (ACS6772) and probably others.
|
|
|
|
|
02-13-2020, 12:36 AM
|
#7 | |
|
Senior Member
Join Date: Nov 2018
Location: Waterford California
Posts: 2,630
|
Re: A/C comp control?
Quote:
They make a POA upgrade that fits in the space allowed on a factory air system to convert to a binary switch to cycle your compressor. If your POA is a Delco brand it is non rebuildable if it is Frigidaire brand it is rebuildable and can be converted to 134A specs. That's all I know about that. |
|
|
|
|
|
02-13-2020, 12:48 AM
|
#8 |
|
Registered User
Join Date: Mar 2019
Location: Arlington, TN
Posts: 170
|
Re: A/C comp control?
That looks like the thing that comes on aftermarket stuff like vintage air. It did not come from the factory that way.
|
|
|
|
|
02-13-2020, 01:24 AM
|
#9 |
|
20' Daredevil (Ret)
Join Date: May 2003
Location: Jefferson State
Posts: 13,725
|
Re: A/C comp control?
This thread has a bit more info about that switch. http://67-72chevytrucks.com/vboard/s...d.php?t=766996 Your cursing indicates you found the location of it though.
__________________
- Mike - 1972 K20 LWB 350/350/205 RIP El Jay |
|
|
|
02-13-2020, 09:50 AM
|
#10 |
|
Old member
Join Date: Jan 2002
Location: Liberty, & Garden City S.C. , U.S.
Posts: 19,945
|
Re: A/C comp control?
The electrical section has the wiring schematic's in color with all the right color wires to trace your mess with and figure out what you don't need.
__________________
1971 LWB Custom, 6.0LS & 4L80E, Speedhut.com GPS speedometer & gauges with A/C. 20" Boss 338's Grey wheels 4 wheel disc brakes. My Driver Seeing the USA in a 71 Upstate SC GM Truck Club 2013,14 and 2016 Hot Rod Pour Tour http://upstategmtrucks.com/ Get out and drive the truck this summer and have some fun! It sucks not being able to hear! LWB trucks rule, if you don't think so measure your SWB! After talking to tech support at Air Lift I have found out that the kit I need is 60811. Per the measurements I gave them. Ride height of truck inside spring and inside diameter of springs. |
|
|
|
 |
| Bookmarks |
| Tags |
| 71 c10, air conditioning, controller |
|
|
Hybrid Mode
