AC Almost Completed

[70GMCer]

Installed new condenser, evap, dryer/accumulator, Orifice tube & compressor.

Now, just waiting for the hoses to come in.

Hope it works....

[Palf70Step]

Looking good

[70GMCer]

Another step closer.

I made up the hoses. Now, I just have to find a place in my area to crimp the ends..

[jwilson645]

For those of us who are about to tackle this same chore, can you list what parts you used and where you purchased?

[70GMCer]

ok....here's what I bought with part numbers.

RockAuto Condenser SPECTRA PREMIUM 73642
Evap FOUR SEASONS 54275
Drier/Accum FOUR SEASONS 33204

Amazon Orifice Tube Four Seasons 38635

Ebay Compressor Sanden 508 V-Belt
Hose Kit https://www.ebay.com/itm/Universal-1...72.m2749.l2649

AC Drier fitting https://www.ebay.com/itm/NEW-AC-FITT...72.m2749.l2649

Summit Vintage Air Bracket kit 15123-VCB

The costs for the hose crimping in my area is $25.00

The total cost to me is $474.61. Not counting MY labor or MY R134 Freon

Hope this helps others.

[Jeepwm69]

Originally Posted by 70GMCer

ok....here's what I bought with part numbers.

RockAuto Condenser SPECTRA PREMIUM 73642
Evap FOUR SEASONS 54275
Drier/Accum FOUR SEASONS 33204

Amazon Orifice Tube Four Seasons 38635

Ebay Compressor Sanden 508 V-Belt
Hose Kit https://www.ebay.com/itm/Universal-1...72.m2749.l2649

AC Drier fitting https://www.ebay.com/itm/NEW-AC-FITT...72.m2749.l2649

Summit Vintage Air Bracket kit 15123-VCB

The costs for the hose crimping in my area is $25.00

The total cost to me is $474.61. Not counting MY labor or MY R134 Freon

Hope this helps others.

Have a link to the compressor you used? Looks like ebay has a ton of them.

[70GMCer]

Originally Posted by Jeepwm69

Have a link to the compressor you used? Looks like ebay has a ton of them.

Got one on the way

[70GMCer]

Originally Posted by Jeepwm69

Have a link to the compressor you used? Looks like ebay has a ton of them.

Here's the ebay link https://www.ebay.com/itm/Sanden-508-...72.m2749.l2649

[DieselSJ]

Nice. I completely rebuilt mine 2 years ago when I converted to R134. I wish I had swapped in a Sanden in place of the H6 though. What color orifice tube did you use? I went with blue based on input from the guys over at ackits.com.

[70GMCer]

I went with the red orifice due to being for r134 so this is a starting point. I liked the .61 orifice size.

I should have the system up & going within the next couple days.

I'll post how it works here...

[70GMCer]

Hoses connected & pulling a vacuum......hopefully no leaks.....

[70GMCer]

Vacuum system, charged with 2.75 lbs of R134

SUCCESS !!!! Working like a champ & blowing COLD !!!

So glad this is over with.....

[gmachinz]

Now you just need a q-jet idle stop solenoid and bracket. The solenoid wire ties in with the light green wire on your 2-cavity male/female molded packard 56 connector located about in the middle up high on your firewall. That will kick up the idle about 200-300 RPM whenever the compressor engages since it will pull the motor RPMs down a bit with the AC on.

[70GMCer]

That is the plan. I have my eye on a couple of them on ebay

[jwilson645]

Just picked up the evaporator(PART # :TEM 288017), accumulator (PART # :TEM 208533) and blue orifice tube (PART # :TEM 207316) at my local NAPA. They were about the same price as RockAuto after shipping.

Be aware that there are 2 different evaporators available for these trucks, one with a 90* tube and one with a 180* so look at your old one if you have one before you order.

[Jeepwm69]

Thanks.

My 83 has an R4 and I've been hesitant to replace it with another R4 given their reputation for short service life.

Think I might try the Sanden route

[70GMCer]

Originally Posted by Jeepwm69

Thanks.

My 83 has an R4 and I've been hesitant to replace it with another R4 given their reputation for short service life.

Think I might try the Sanden route

When I was doing research looking for ac parts, I did see where they make a conversion bracket kit for the R4 to Sanden 508 compressor.

I passed it up cause I didn't have any of the original brackets to use.

This is one place that sells that kit.

https://www.dirtydingo.com/shop/prod...oducts_id=1622

[Jeepwm69]

Originally Posted by 70GMCer

When I was doing research looking for ac parts, I did see where they make a conversion bracket kit for the R4 to Sanden 508 compressor.

I passed it up cause I didn't have any of the original brackets to use.

This is one place that sells that kit.

https://www.dirtydingo.com/shop/prod...oducts_id=1622

Even better! Thanks for posting that!

Crud. Only works with serp belt systems.....

[70K10Hunter]

I will save this info. Thanks for posting.
BTW: were did you buy the A/C hose?
I think I would like to go this route on my 77 K25 because I don't like the boat anchor A6 compressor.
just now seen the hose kit.

[70K10Hunter]

I will save this info. Thanks for posting.
BTW: were did you buy the A/C hose?
I think I would like to go this route on my 77 K25 because I don't like the boat anchor A6 compressor.

[70GMCer]

Originally Posted by 70K10Hunter

I will save this info. Thanks for posting.
BTW: were did you buy the A/C hose?
I think I would like to go this route on my 77 K25 because I don't like the boat anchor A6 compressor.

I bought the hose kit on eBay https://www.ebay.com/itm/Universal-1...72.m2749.l2649

I also had to buy a #12 fitting on eBay to connect the hose to the drier/accumulator. The hose kit didn't come with the #12 fitting. https://www.ebay.com/itm/NEW-AC-FITT...72.m2749.l2649

I had the hoses crimped by a Hydraulic Hose Shop company near me. It cost me $25 to have the 4 fittings done.