1993 Chevy Silverado Ac Conversion: R12 To R134a Part 2
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- Опубликовано: 5 окт 2024
- Part 2 of my AC conversion from R12 to R134a. In this video I show how I install the new parts. This is a 1993 Chevy Silverado K2500 4x4. There was already a new orifice tube in the new condenser. If your using the old condenser than put in a new orifice tube.
One reason I like this era of Chevy trucks is the accessibility of components. You do nice work Mike!
Thanks I appreciate that! I always try to do the best work I can. I'm Kind of a perfectionist even thought most of my things aren't perfect. I do like the older trucks where you can still climb in the engine compartment. This one has almost 300k on it.
Thank you friends for sharing your experiences
Thanks! Appreciate you watching. Have a great day.
Mike
I wasn't getting the high side reading l should have.
So l took it to an ac friend he discovered the new add on connection didnt let the valve open the Schrader valve so we took the piece off and ground the bottom down until the clip on would open the schrader valve.
Then we got the reading l didn't. Finally the gages read right and all came out well.
Great! Thanks for sharing that info.
Always use two wrenches when loosening or tighten fittings
Your right about the two wrenches. Thanks for watching
Around 4:50 you should have been adding an orifice tube..
The new condenser had a new orifice tube already installed. I thought I mentioned that but I guess not. You are right that is a good time to add a new orifice tube if the new condenser does not come with one. I updated the description to note that. Thanks for pointing that out. And thanks for watching.
i am curious what did it cost to convert & did you find it easy on a scale of 1 to 10 i was thinking of doing it to my 90 silverado but some mechanics say it's very costly
If your mechanically inclined and have a lot of common sense and watch as many RUclips videos as you can and do a little conventional research on the web. I would give this project a 5 for difficulty. For me it was about a 2. I fix all my own stuff and have been doing it forever. It was about $340 in parts and maybe get 2 or 3 cans of R13a ($20 a can) and a good can tap (5 or 10 bucks). The gauges are from harbor freight. I guess it's worth whatever cool air is worth to you. I can't stand being hot. I didn't replace the evaporator or the compressor, but I would have if I needed too. If you have to replace the compressor, I would buy a new build one from maybe Napa. You could always change all the parts and have a shop charge it for maybe $100 or so because that is the hardest part. If you overcharge or undercharge it, you won't have good results. I charge it slowly and undercharge it and can always ad more if needed. Good Luck and don't charge on the high side and wear some gloves and eye protection.
Compressor? Why not just R&R the shrader valves accumulator and vacuum? If you’ve left the the evaporator and the compressor? I’m just curious is all.
The only parts that I trusted as ok were the evaporator and the compressor. I didn't want to do the job the 2nd time because of an old part that was suspect. It had not had a charge in it for some time. It is still working great today.
Hey! What happened to your comment on the Toro lawn mover? Did you remove it? (You were right, it was the airfilter!)
Not sure what happened to my comment guessing the air filter first. I put it back in on your video. That's cool it was a simple fix.
@@mikesworld60 It happens sometimes, really weird!
Do you not have to change the pressure switch? I’m about to do my 93 and gathering all the parts. My current compressor is bad and I have a leak somewhere.
I used the r12 pressure switch, you can buy the r134A switch also and I probably would if you changing the compressor also, I used my old compressor.
@@mikesworld60 you just used the r12 compressor? do i need to use ester oil if im moving the compressor (134a) to the r12 truck ?
@@DirtyMikeHoncho I would use the ester oil if you think you have any mineral oil still in the system in other components. If everything is new and you use the compressor that has pag oil in it, I would use pag oil. The ester oil is compatible with pag oil and mineral oil, but pag oil is not compatible with mineral oil. If you flush the system to make sure all mineral oil is out, then use the pag oil.
@@mikesworld60 my 1993 truck has r12 system and i have a 1994 with 134a system. i ordered an accumulator and an orfice tube and im taking everything off my 1994 truck and putting onto the 1993 truck except for radiator lookin part in dash. im changing the front radiator deal with 134a truck though. the r12 truck ac hasnt worked since 2001 shouldnt have to worry about any mineral oil in the in dash radiator. sorry idk which is which condensor or evaporator i only do this kinda work on my own vehicles. this grandpa old truck and im just keeping up with it these days. just hit 164k on the dash
@@DirtyMikeHoncho evaporator is in dash, condenser is out front by radiator. don't forget to put all new green orings in. good luck
Hi so I put everything together but I got a new compressor I just can't figure out I put the seals on the hoses one that connects to compressor but it leaks you can hear the hissing sound what o rings did you use for it
I used the Orings that came with the new hose assy. Maybe one is not sitting in correctly or got pinched or damaged. Good Luck
How much for all the parts on the retrofit?
I was just under $500.00 This does not include a new compressor because my old one was ok. So you could ad the price of a compressor if yours is bad. And you may also take into account that I did this 3 months ago. I am not sure what todays prices would be. Everything seems to be more expensive now.
Did you take the Schrader valve out of the low pressure r12 fitting?
I don't remember if I did or not.
I’m trying to install the high side 134 fitting on the 1991 s10 high side r12 stock
Fitting, when I try to hook gauge to the high side with the 134 adapter installed on the r12 the gauge won’t engage the shrader valve. Do I need a Schaefer valve in the 134 fitting or is the one that is in the r12 too far down to reach when the adapter is on top?
My high side 134a fitting has no valve in it. It is pressing on the valve that is in the r12 line. The high side 134a fitting is the one that is about 1" tall and takes the large cap. The low side 134a fitting is smaller but longer. Not sure which adapter in the kit would be the one for low side on 91 s10 since I have not worked on one, but I would think it is the same one that I used on my 93 Chevy. At any rate my gauge coupler pushes on the valve that is in the existing line. Adapter has no valve in it.
@@mikesworld60 cool, so if my gauge won't engage with the Schrader inside the old r12 fitting, only a couple mm away from contacting Schrader with new 134 adapter installed, the r12 valve is bent a little, is it possible I need a new valve in the old r12 fitting? or do I need to find a valve that can be put in the 134 new adapter? an get rid of the r12 valve? I hope that makes since
can I buy a Schrader valve to install in the 134 adapter? how would I know what valve or size if so?
@@joelewis4336 I think I would just remove the one from the R12 fitting and Inspect it or replace it. They come out just like they would in a tire valve stem. I changed my entire hose assembly so if you did that maybe you can get one out of the old hose assembly. Does the gauge set work ok on another system to rule out that as a problem? You may want to double check you have the right adapter from the kit. It seems like another one would screw on there but it would not be the right one.
@@joelewis4336 so what did you end up doing? I'm having a problem getting mine to take refrigerant and was wondering if the 2 valves was the reason.
How to remove the line that coming out of the front dash
That line goes to the evaporator core under the dash. On a 1993 like mine, you remove the glovebox to get access and it is easy to remove from below where the glovebox is. Not a bad job on this year.
Le tub orifice ces pour faire beau.
I’m in the process of doing this on an 88, I bought a new compressor as well. What type oil goes in these compressors when swapping to r134a?
If you go to my channel, I think I used Ester 100 oil. If I didn't mention the oil in this set of videos, I believe it is shown in the videos I did for 1992 Econoline I have 3 videos on. ruclips.net/video/m9KKkP0pHUE/видео.html
ruclips.net/channel/UCttNoiCD8VMYQAQb98q1Rig
Evaporator?
It didn't need one, only part that was ok except for the compressor.
No orfice
I bought an orifice tube but there was already a new one in the new condenser I installed. So yes, there is an orifice tube in the system. I mentioned this in part one at the end of the video when I showed the parts I installed. I also mentioned this in the description on this video.