3FE - troubleshooting A/C issue

[1972FJ55]

It's pretty normal to see a good sized puddle on the ground.

 

[alphaeighteen]

It's pretty normal to see a good sized puddle on the ground.

That's what I assumed but wasn't sure. Thanks for clarifying it!

 

[Two 3FEs]

Those are right there in the picture you posted. One with a red cap and one with a black (grey) cap.

Red is TYPICALLY high pressure, Black is typically low pressure.

You have a 3FE which means it was originally charged with R12 freon. Not readily available these days and it does NOT look like it has the adapted fittings to indicate someone has changed it over to R134 freon.

Converting it from R12 to R134 will require a number of parts. If you're already having problems with the compressor, then you should seriously consider a new compressor, drier, expansion valve, and possibly even a condenser (in front of the radiator). Hold on to your wallet.

Some of the 3FE folks here can post available alternate parts for the AC system on your truck. Start looking at RockAuto for Denso brand parts.

Most of this you can change out yourself, but you'll need specialty tools to flush, evacuate, and recharge the system. You can do all the parts replacement, then take it to a shop to have the F/E/R completed.

the gauges we have are for R124 fittings. how do i get adaptors to change threads sizes?

 

[Two 3FEs]

the gauges we have are for R124 fittings. how do i get adaptors to change threads sizes?

R12 available on eBay Envirosafe Arctic Air for R12, Auto AC Refrigerant Support, 1 can | eBay - https://www.ebay.com/itm/285405416193?mkcid=16&mkevt=1&mkrid=711-127632-2357-0&ssspo=MgDrh9RoSqe&sssrc=4429486&ssuid=1HgkAIG5QFS&var=&widget_ver=artemis&media=SMS

 

[BILT4ME]

the gauges we have are for R124 fittings. how do i get adaptors to change threads sizes?

Do you mean R134?
Or R12?

Old is R12.
Newer is R134.

If you are converting an R12 system to R134, you need to change those fittings with an adapter kit. (Purchase at any FLAPS)
Then change all the seals in the system. Maybe get at FLAPS.
Change the dryer. Toyota.
Change the oil in the compressor.
Evacuate the system to hold vacuum.
Put in new oil and freon in the system to the correct pressure.

If you're keeping R12, then you need to pick up a set of old gauges for R12 from Craigslist or eBay.

 

[Two 3FEs]

Do you mean R134?
Or R12?

Old is R12.
Newer is R134.

If you are converting an R12 system to R134, you need to change those fittings with an adapter kit. (Purchase at any FLAPS)
Then change all the seals in the system. Maybe get at FLAPS.
Change the dryer. Toyota.
Change the oil in the compressor.
Evacuate the system to hold vacuum.
Put in new oil and freon in the system to the correct pressure.

If you're keeping R12, then you need to pick up a set of old gauges for R12 from Craigslist or eBay.

I'm sticking with R12. The issue is that our gauges are R124 and the threads don't match. So I need some kind of adaptor to make the transition