AC Compressor Super Heat Switch

[Hack71]

My A/C Compressor is starting to make some noise, I am thinking about replacing it with Old Air ProTEN A6 upgrade compressor. My System is currently running R12 and not wanting to change to 134a, not sure what compressor i need S.H (super heat) or H.P (high pressure). Any thoughts on this compressor or other suggestions. Can i visually see the difference in these two compressors what do i look for? Thanks

[Bigdav160]

Do you have a link to the choices? There is no wiring in your truck for either switch so it likely doesn't matter.

just a fyi, that compressor is a Denso based compressor available from a variety of outlets. I think I caught mine on sale for around 2 bills.

[hdff]

I have been told that an a6 will leak at the seal sooner than later. An a10 looks like and and bolts up to stock mounts. Leddzepp posted a pic and a part number on another thread of a kit from auto zone that includes a10, dryer and oil for $300 something. Look for a thread here called " factory ac, what to do" it has some good info and the part number for the a10

[Hack71]

Looks like the A10 is the same as the Pro6TEN A6 Upgrade that Old Air Products carries.

These are my two options:
Part# [21-2201SH] $345.00
Pro6TEN, A6 Upgrade, S.H., 1 Groove, Natural Aluminum
Replaces Super Heat and Plain Head Applications

[21-2201HP] $345.00
Pro6TEN, A6 Upgrade, H.P., 1 Groove, Natural Aluminum
Replaces High Pressure and Plain Head Applications

They said if my compressor has "Super Heat" use part#21-2201SH
if not use part #21-2201HP.
I don't know if it has super heat switch or not and does it matter?
I think it must if they offer both for sale.
Is one for R-12 and one for 134A?

[Luvinit]

The high temperature or superheated switch is just a protection high temperature sensor on the back of the pump. Shuts the compressor off if condenser pluggedwith dirt. Was used on a lot of farm machinery don't think it was ever on these trucks.

[rsgt]

I bought the 4Seasons/Everco/A/C Compressor part No.58098 It looks like the one in your picture. I ordered it from autozone, it was the first of june. There was a 20% code I used it was ROAD20 I paid $266.00 shipped to my door. The compressor is working great on my 72. I just checked they have a new code SUN20

[Hack71]

I was unsure and a little confused about the High Pressure vs. Super Heat Switch. I'll look into the Autozone Compressor, Thank's

[LEEVON]

Originally Posted by rsgt

I bought the 4Seasons/Everco/A/C Compressor part No.58098 It looks like the one in your picture. I ordered it from autozone, it was the first of june. There was a 20% code I used it was ROAD20 I paid $266.00 shipped to my door. The compressor is working great on my 72. I just checked they have a new code SUN20

Dang, that's a good deal. My commercial pricing is $322.

Hack71. I used the old air version, works great. Make sure you are going through the whole system, replacing what you can...flush what you can't. I also rebuilt the entire system in my '71 and kept it R12 (I have a large stash). Works great.