 we're going to change headmaster control on this walk-in cooler. One of the things I've been wanting to mention lately is how fast you can get things done with a three-eighths hose. You know we've been talking about the big blue hoses three eights for recovery makes a unbelievable difference. A lot of cool new tools and toys and stuff like that makes the job quicker, easier. I don't use these for vacuum anymore. They're dedicated for recovery. We're gonna pull right off the receiver. One of the things I couldn't find, AK's bucket lid thing, they don't make it no more. So I found this one by Plano. Pull it out, put your stuff in there like that. You've got your other hose here extension cord and some extra little stubs and an extra rack. So we're gonna pull a quick back on this recovery cylinder. This will get us at an angle so we can see what we've got going on. We have 20 pounds in there that's about what this thing holds. This regulator is awesome made by Western. Cool thing about this one here it's 250 pound one. They've got 500 and a 650 I think it is. But basically when you have it on you've got off, braze, purged and test. Test will take you up to 250 for this particular model. Alright so we're gonna go get that thing cut out of there. We're down to purge. I think we're just gonna go ahead and take this apart there and put a whole new 90 on it. It's just gonna be easier. Here's a new one. It's all machine threaded. I'm not gonna take a chance. We're just gonna take it apart. That is the awesome thing about the Bako wrenches. They're really thin and they're nice and wide. And then it's just gonna come in the bottom. To me it's just easier if we can do some of this external of the unit so we're not trying to braze uphill. Make it easier, work smarter, not harder. But as you see the sticker did not get damaged 250 degrees so it did not hurt it which is a good thing. So condensers come in the bottom, discharge on the left and receiver on the right as far as getting our nitrogen through. There is no valves so unfortunately you can work your way backwards through the receiver here. Let's go ahead and put our butt rag down here. Catch any drippage. So I'm thinking ding and ding that's easier. They say you don't have to do that but I'm gonna tell you right now that made it a whole lot easier. That will match up to that. Alright our battery went dead so didn't get all that like I thought I did. But we went ahead and sprayed all of our fittings including our head. We put the pin back in there that push rod and snug her up. But that's what we got right now. I don't think I don't know if it caught it on video or not but if it did great. We preheated the end of the copper and then used the power switch. Made that fitting right there unless fitting to have to stock. Only one solder joint. Got two nineties in there cleared her up, brought her through there. We used some paste on there along with wet rag and right now we're under pressure test. Gonna pull a vacuum on it and get her restarted. The reason why we're using the valves with this is so that we can valve it off, do our decay test, make sure it holds. You know what? Not going to be able to get that in there. That sucks. Well you know what? It's not a perfect world. There we go. That is not how I'd like to do it but it's how we're gonna do it. Like I said don't have a whole lot of options here. They have a fancy-fitting TrueTech tools you can get. I don't need it that often and I think it was rather expensive. Got her gas valve is open and she's starting to her pull down. Okay it was two minutes 40 seconds into it. We're just now finally starting to drop. So there's definitely you know leftover refrigerant in the oil. So it's gonna take a little bit to pull down. We're going kind of quick though and everything is the way it should be. So receiver, condenser, and discharge. We're gonna fill this up with our 3-eighths line. Gonna transfer a little bit of liquid kind of quick. We're dumping that right into the receiver. Alright we're at 11 pounds already. Check our time clock. I'm sure it ain't all out of whack now that we've had the power off for a little while. These are a little weird. They got a slow start on them, a bump start they call it. It'll run for a couple seconds stop, run for a couple seconds stop. We've got her charging in there until we get solid and we'll add 10% to the total charge. Right now we're 14 pounds so 10 to 15% over that would be your winter charge. That's right in your books. Alright got us a new filter dryer in there. Gotta put a tee in there so I could pull the vac on it because it's missing the traditional valves that are normally out here. So got that there correctly through the bottom out to the side. Nothing coming through. Had to add a little extra yet and that should wrap this one up. Alright now that we're off site we can take a look at this valve. Alright so we have our discharge, our condenser, and our receiver. The condenser which is your liquid coming in through the bottom here is gonna come out and go to the receiver. Generally when everything's working properly we're at normal ambient temperatures you know and we're above say the 180 pressure mark. Well in this instance right now the bulb was cut. When that was cut they let the push rod here come forward. The spring and the cap inside here all come forward and will now allow the condenser to go to the receiver. So if you cut it you're gonna bypass this device as if it wasn't in the circuit at all. So inside here we've got a diaphragm just like a TXV. It's pressurized so there's that. Then like we seen earlier here's the push rod that comes right to there and then if you open up the rest of it we've got a spring and we've got a piece of metal here that basically acts as a valve. That spring just goes in the bottom of that brass piece there so it just sits there. This is not rocket science this is just machine thread there's nothing special sealing it other than a perfect nice machine thread. So we've got this spring drops into there this here you can see it's nicely machined you've got it the other side it's nice and flat it fits right on top of there perfectly if you look at that. So it sits there like that that's gonna go inside the body here the body's got a nice machine spot there you can see right here off to the right that is your receiver so the gas is going to come in through the condenser port out on the receiver with the spring like it is now nothing pushing against it that is going to allow the refrigerant to come right through and out but under normal circumstances this diaphragm is going to work the rod here is pushed down by the head the head will push that spring down I would assume that this is probably 180 pounds of pressure in there anything below 180 it's gonna cause it to start bypassing anything above it it's gonna be wide open so generally got 180 plus going through here you're gonna go straight on through if it's below 180 it's gonna push down it's gonna start letting the discharge gas come through and bleed through if you used to blow through it right right now you can hear that that's coming right through but that's with the diaphragm busted if it was pushed in we'll push on that and I will blow through the other one I'm gonna push on it like this you can see it start to move you'll hear the difference in the air going through that's just me pushing on the actual spring down there and it's letting it go through so that's all there is to this thing there's not a lot to it it's you know the spring and stuff's all calculated out same thing the diaphragm I would think you could easily tear it apart and clean it put it back together but generally we ain't got time for it if it didn't work to take it all back apart again for a second time when I took this apart in the video there wasn't a whole lot in here to be damaged when I soldered it in place I was just my own personal preference everything worked just fine but like I said here's that piece of metal there you can see the other side there is sheened out boom that push rod as I'm calling it fits right there you can see the groove it actually is grooved enough it'll actually hold it so and that just pushes up and down based off of the diaphragm there we go that's it