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A/C time ...how to handle refridgerant

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Old 06-10-2018, 09:40 AM
  #46  
Dan Martinic
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After watching a video on rebuilding hoses, I discovered it’s not just a crimp; there’s a part brazed or soldered on first, meaning the purchase of not only a $$ crimping tool but a special torch and fittings......

I’ll look for a place to rebuild as you suggest. Or maybe the aliens can do it.....

Say, in Post #11, there is a dealer machine method that includes flushing the system. It’s not mentioned that the TEV (and the dash) is removed. Did dealers improperly flush systems? Or, did they in fact remove dashboards and end up charging major $$ for a flush & fill?

I also looked back and remembered that I can use the vacuum to check for more leaks after replacing the hose. If I find a cheap way to restore my hose, the money saved could buy that vacuum......

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Old 06-10-2018, 10:25 AM
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Old 06-10-2018, 11:17 AM
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Lots of hosers ‘round here! Excellent work Spencer
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Old 06-10-2018, 01:11 PM
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Green Line hose and fittings is the place I use in Calgary. They are a great resource.
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Old 06-10-2018, 03:56 PM
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Super! I’ll definitely stop by them.. thanks
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Old 06-11-2018, 12:41 PM
  #51  
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Originally Posted by gruhsy View Post
Green Line hose and fittings is the place I use in Calgary. They are a great resource.
Just called the Green Line on the map; can't help me. They don't do hydraulic or refrigerant hose (?). He asked what PSI and I said "300 minimum" and he said "Sorry".
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Old 06-11-2018, 07:23 PM
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you're what, 3 hours from Detroit, there's got to be 100,000 AC hose shops around, lol
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Old 06-11-2018, 11:40 PM
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Found a place near my work... looked pretty shady but, oh well.... dropped it off on my way home and they called me shortly after that it’s done. $70CAD (about 50USD). Can’t wait to see this quality work........
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Old 06-12-2018, 11:06 AM
  #54  
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Rebuilt hose. Kinda thin and I’m not sure they replaced the part that is brazed on. As usual, time will tell!


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Old 06-12-2018, 03:55 PM
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Looks nice! Goodyear - can't be too bad.
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Old 06-12-2018, 06:20 PM
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Nice stuff...FYI specs:
https://www.burgaflex.com/products/


click on 3090 Reduced Barrier Hose...your hose there has a working pressure of 35 bar

high side on 944 AC system *might* see 20 bar on a really hot day.
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Old 06-12-2018, 08:44 PM
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My new AC hose looks pretty much identical, much thinner that the original one and it's been working fine for 2 years now. I think it is called technical advance On a side note - long time ago I flushed the AC system with either brake cleaner or some sort of purified gasoline without removing the TXV valve. I just didn't know it should be removed... I just poured some of the liquid into the hose and pushed it through with compressed air until dirty crap came out. I repeated this process until clear liquid started to come out. Then replaced all orings, blown hose, receiver/drier and rebuild compressor with R134A kit. Shop filled it in with oil and gas and it's been working fine since then. I'm not trying to encourage anybody to do it that way, just saying it worked for me. On the other hand TXV restricts the flow of liquid, it doesn't stop it.
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Old 06-13-2018, 06:33 PM
  #58  
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Hose looks good then.. super! Will put back on the weekend.

I ordered an AC o-ring kit from Amazon; I’m hoping it will suffice. When changing o-rings in the system, I guess that means under the dash too (evaporator / TXV connections)? I am seriously hoping all that in-dash stuff has been dealt with that time I had evaporator changed.

I have a new drier sourced locally for cheap. Vacuum leak test should direct me next.

Getting humid these days
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Old 06-14-2018, 03:11 PM
  #59  
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My HVAC buddy at work says put the hose back and bring the car in; he will test for leaks by using Nitrogen and pressurizing to 300psi. Sounds a bit harsh! He says you can't reliably test for leaks with a vacuum?

The Nitrogen sounds legit so maybe I'll have him do this and pump a little less psi like 150 or so...
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Old 06-14-2018, 05:10 PM
  #60  
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Nope, your buddy is right on, 300 PSI with nitrogen is perfect.
And he is correct that some leaks can't be found with vacuum.

And he sounds like a great buddy!
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