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Old 11-13-2020, 11:16 PM   #1
conoco
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Help identify part and where to purchase.

This has a button that is engaged when one of the arms on my heater controls is engaged. It is hooked up to 2 wires which I am assuming the button is either powered on or cut off when the flap on the heater control box is shut. I really dont know what it does.

I have heater w/AC. LMC doesnt list the part. This one is pretty corroded and bent so I am hoping someone could identify it and have suggestions on where to purchase.

It is in a 1972 gmc k2500. Thank you.
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Old 11-14-2020, 12:48 AM   #2
Stocker
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Re: Help identify part and where to purchase.

That is a normally-open electrical switch. When the plunger is pressed, the contacts close to send 12vdc to the A/C compressor to engage the clutch.

Here's a source: https://www.brotherstrucks.com/67-72...tinfo/ACS6772/

Another: https://www.classicparts.com/1967-72...ctinfo/68-961/
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1972 K20 LWB 350/350/205

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Last edited by Stocker; 11-14-2020 at 12:55 AM.
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Old 11-14-2020, 01:01 AM   #3
conoco
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Re: Help identify part and where to purchase.

Thank you. It's hard too look for parts when I dont know what area to look!! Thanks for the help. Little bastard is expensive for how small it is.
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Old 11-14-2020, 03:00 PM   #4
Andy4639
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Talking Re: Help identify part and where to purchase.

Quote:
Originally Posted by conoco View Post
This has a button that is engaged when one of the arms on my heater controls is engaged. It is hooked up to 2 wires which I am assuming the button is either powered on or cut off when the flap on the heater control box is shut. I really dont know what it does.

I have heater w/AC. LMC doesnt list the part. This one is pretty corroded and bent so I am hoping someone could identify it and have suggestions on where to purchase.

It is in a 1972 gmc k2500. Thank you.
That is a simple On/Off switch. Easy to take a part and clean it up good and lubricate and put it back together. It would really have to be messed up to replace it.
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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
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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.
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Old 11-14-2020, 07:59 PM   #5
Stocker
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Re: Help identify part and where to purchase.

Just dug through some old emails.... A few years back, I sprayed mine thoroughly and cycled it extensively, and got it to work just part of the time. Before I discovered what it was called or how to locate one from a vendor, I noticed "INDAK" stamped on the switch. Google helped me contact the manufacturer. I'm not sure if they normally sell to the public, but I spoke with a gentleman who took pity on me. He sold me a J634A switch at a reasonable price, and it's an exact match to OEM and it works perfectly. Here's a link:

https://www.indakswitches.com/push-b...tton-switches/
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