Changing a 21 year old Rheem evap coil.

This morning, we are, nice attic space, not the greatest access right here, but we are changing this evaporator core. So I'm fixing to get started on that. I've got it recovering outside, I'm fixing to cut this loose. Alright, this has been replaced before. This drain goes in the bottom. If it's at all possible to save this elbow and reuse it, that's what you should do because they don't make those elbows anymore the the threaded part is longer than a normal threaded elbow but they do make these little straight adapters that you can use but it looks like with this i just need to move that board down there and i can unscrew it you can see on this coil where it was leaking see all the that oil right there up here it was leaking i also found leaks down here but um it's a 21 year old system but they still decided to replace the hole so that's what we're going to do i'm going to convert this to um r422b instead of r22 these are the adapters that they send with these coils for the drain they don't make those elbows with the long neck on them anymore so you have to use one of these and cut it off and put an elbow on it If you can't save the elbow that's in there get up without bumping this Time to pressure test it all right we got about 200 psi on it let's see i think we're good that accumulator this thing had very little freon left in it if y'all saw that leak it was leaking bad there's still freon in the accumulator all right now i'm gonna try to hook up this drain once again you're not going find this elbow anywhere so try to reuse it if you can it was getting tight so i'm gonna leave that there i'm gonna leave that like that i'm not gonna glue it i much prefer the ones that had the drains that came out right here along the bottom that's not what i got see if we can't tape that up a little bit other than that little bit of tape right there we're done up here i seem to have leveled off right around 9 50. this right here is kind of cool to the touch and so is the accumulator so that tells me i'm boiling off some freon in the line set and in the accumulator there's probably oil trapped freon there so all i can do right now is wait unless i'm going to heat that up and i don't really want to do that all right i valved this off and it's held right there for like 20 minutes so um i'm fixing to charge this thing up all right what i didn't show at the end of that last video was the problems i was having with my vacuum pump now i've had that same vacuum pump for 11 years and recently it's been taking a long time to pull down into a deep vacuum and today a system like that a four ton system when that vacuum pump was new would take me about five minutes but today it would not pull down below like 750 microns and i know i had a tight system because i could valve it off and it would hold but it just would not go any lower and i waited like an hour 15 hour and 20 minutes all the oil trapped freon had long since been gone and i couldn't get it any lower so today i bought a field piece vp85 it came highly recommended but having to wait hours and hours for a system to pull down just especially when you know you got a tight system it's frustrating and um 11 years is long enough for a vacuum pump i sent it off to have it rebuilt and i'll use it as a backup i'll keep it at my shop but on the next job where i have to open up a system we'll be trying out this new vacuum pump and i'll do a review on it for you but you know how it does