01-17-2019, 01:19 PM
|
#16
|
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,409
|
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,409
|
Quote:
Originally Posted by 96RedRunner
Yep thats right. Saturated gas goes in top of condensor liquid out bottom.
There will be liquid there, thats also a high side line with the most thermal expansion and contraction.
I'd braze it on the bench since it's a one shot deal.
If AC is working now recover/filter whats in system replace line pull vacumm
check for leaks charge with a bit of PAG oil and seal conditioner leak dye.
The freon is what drives up the cost.
|
Or just leave it alone since it isn't leaking?
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
 Reply With Quote
|
|
01-17-2019, 01:37 PM
|
#17
|
|
Member
|
|
Join Date: Dec 2007
Location: Georgia
Posts: 356
|
|
|
Member
Join Date: Dec 2007
Location: Georgia
Posts: 356
|
Quote:
Originally Posted by 96RedRunner
Yep thats right. Saturated gas goes in top of condensor liquid out bottom.
There will be liquid there, thats also a high side line with the most thermal expansion and contraction.
I'd braze it on the bench since it's a one shot deal.
If AC is working now recover/filter whats in system replace line pull vacumm
check for leaks charge with a bit of PAG oil and seal conditioner leak dye.
The freon is what drives up the cost.
|
I learned that pesky fact about liquid in a pipe while trying to solder a fitting on copper house plumbing. If there is any water at all in the tube, it is impossible to get the metal hot enough to solder or braze it. I burned through a few propane canisters, before I learned that you must get all of the liquid out of the working area.
__________________
'99 SR5 V6 2WD named Jolene / In the T4R 200 Club
|
|
|
Reply With Quote
|
|
01-17-2019, 01:41 PM
|
#18
|
 |
Senior Member
|
|
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
|
|
Senior Member
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
Quote:
Originally Posted by phattyduck
Or just leave it alone since it isn't leaking?
-Charlie
|
True dat, but if you get a highside leak that big you lose all freon real quick plus most of PAG, his money.
I live in the south so AC high priority.
Be a good time to change drier, if drier desecant cartridge breaks apart gets into system your f..kd
Driers do have a life span, cost me $1200 how I know.
|
|
|
Reply With Quote
|
|
01-17-2019, 01:45 PM
|
#19
|
|
Senior Member
|
|
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
|
|
Senior Member
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
Quote:
Originally Posted by aerobat66
I learned that pesky fact about liquid in a pipe while trying to solder a fitting on copper house plumbing. If there is any water at all in the tube, it is impossible to get the metal hot enough to solder or braze it. I burned through a few propane canisters, before I learned that you must get all of the liquid out of the working area.
|
Yep I've gone as far as shoving bread into pipe to plug it to make joint with house plumbing.
|
|
|
Reply With Quote
|
|
01-17-2019, 01:46 PM
|
#20
|
 |
Member
|
|
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
|
|
Member
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
Quote:
Originally Posted by 96RedRunner
You gotta be real good to braze aluminium, real good. Being that system is pressurized even when not running it's going to blow out right about the time
it goes molten to bond.
|
Quote:
Originally Posted by 96RedRunner
Yep thats right. Saturated gas goes in top of condensor liquid out bottom.
There will be liquid there, thats also a high side line with the most thermal expansion and contraction.
I'd braze it on the bench since it's a one shot deal.
|
Quote:
Originally Posted by aerobat66
I learned that pesky fact about liquid in a pipe while trying to solder a fitting on copper house plumbing. If there is any water at all in the tube, it is impossible to get the metal hot enough to solder or braze it. I burned through a few propane canisters, before I learned that you must get all of the liquid out of the working area.
|
Afaik when brazing, you don't actually melt the surface, just the filler. Seems like the problem with brazing that line is the thin walls and the low specific heat of aluminium means it would be easy to blow through, especially if you are using something as indiscriminate as a gas torch.
So, reckon I can TIG braze it on the car? I maybe could crank the TIG heat up enough to get it hot without really heating up much of the liquid. Failing that, I can just bribe my welding teacher to braze it. But thats a bit silly, since I don't even think its leaking, so I will probably leave it until it explodes int he summer heat or something.
__________________
2000 SR5 - Build Thread
Last edited by Quantumkiwi; 01-17-2019 at 01:50 PM.
|
|
|
Reply With Quote
|
|
01-17-2019, 01:52 PM
|
#21
|
|
Member
|
|
Join Date: Dec 2007
Location: Georgia
Posts: 356
|
|
|
Member
Join Date: Dec 2007
Location: Georgia
Posts: 356
|
Quote:
Originally Posted by Quantumkiwi
Afaik when brazing, you don't actually melt the surface, just the filler. Seems like the problem with brazing that line is the thin walls and the low specific heat of aluminium means it would be easy to blow through, especially if you are using something as indiscriminate as a gas torch.
So, reckon I can TIG braze it on the car? I maybe could crank the TIG heat up enough to get it hot without really heating up much of the liquid. Failing that, I can just bribe my welding teacher to braze it.
|
Correct. With brazing, the base metal may be near its melting temperature (such as with aluminum), but it's not supposed to actually melt, like it does with welding. That would be tricky and risky with thin aluminum tube. Too hot, and you ruin the entire thing. You really don't get much warning when aluminum melts. It doesn't turn red like steel. I wouldn't risk it, myself.
I don't have any personal experience with TIG. I wish I did - wish I could afford one of those very expensive machines. Then I would learn how to use it, because that could come in very, very handy on a lot of things.
__________________
'99 SR5 V6 2WD named Jolene / In the T4R 200 Club
|
|
|
Reply With Quote
|
|
01-17-2019, 01:54 PM
|
#22
|
|
Member
|
|
Join Date: Jun 2015
Location: WV
Posts: 413
|
|
|
Member
Join Date: Jun 2015
Location: WV
Posts: 413
|
I would definitely evacuate the system.
__________________
|
|
|
Reply With Quote
|
|
01-17-2019, 02:03 PM
|
#23
|
|
Member
|
|
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
|
|
Member
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
Quote:
Originally Posted by Crusifix
I would definitely evacuate the system.
|
No point in doing that now, all the sites about recharging AC says not to do it below 50-60 degrees or so. Its not gonna get that warm here for another 2-3 months at least (unless I drive down to the border lol.) So I guess, the only thing I can do for now is to hope it doesn't leak.
__________________
2000 SR5 - Build Thread
|
|
|
Reply With Quote
|
|
01-17-2019, 02:28 PM
|
#24
|
|
Senior Member
|
|
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
|
|
Senior Member
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
Quote:
Originally Posted by Quantumkiwi
Afaik when brazing, you don't actually melt the surface, just the filler..
|
True to a point, you have to get base material to that fine line so filler bonds,
Aluminum is hard to see that fine line before it goes molten.
|
|
|
Reply With Quote
|
|
01-17-2019, 02:31 PM
|
#25
|
|
Member
|
|
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
|
|
Member
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
Quote:
Originally Posted by 96RedRunner
True to a point, you have to get base material to that fine line so filler bonds,
Aluminum is hard to see that fine line before it goes molten.
|
Yea, I spent a few years in high school welding aluminium robot frames for some competitions. Its was a fast learning experience, especially when you eventually figure out you're using 75/25 gas instead of argon. But I've never brazed it before.
__________________
2000 SR5 - Build Thread
|
|
|
Reply With Quote
|
|
01-17-2019, 02:56 PM
|
#26
|
|
Elite Member
|
|
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,409
|
|
|
Elite Member
Join Date: Mar 2016
Location: Pasadena, CA
Posts: 5,409
|
If you *are* going to fix it, just get a 'new line' from a junkyard truck. And new o-rings, and a new drier, and the time and effort to evacuate, replace parts, vacuum, test for leaks, then refill.
*or*
You could just leave the damn thing.
It maxes out below 400PSI and won't damage anything if it leaks... This is not a power steering or fuel line near your exhaust or something.
-Charlie
__________________
'99 4Runner SR5 Auto - 4WD swapped
'89 Camry Alltrac LE 3S-GTE 5spd
'17 Chevy Volt Premier
'16 Honda Odyssey Elite
Previous: '88 Camry Alltrac LE 3S-GE BEAMS, 90 Camry 3S-GTE, 90 Camry DX, '03 WRX wagon, '08 Outback XT
|
|
|
Reply With Quote
|
|
01-17-2019, 02:57 PM
|
#27
|
|
Senior Member
|
|
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
|
|
Senior Member
Join Date: Jun 2016
Location: MS
Posts: 2,508
Real Name: Mark
|
Another thing about aluminum is it doesn't like impurities when welding/brazing.
Plastic bristle brush only, dirt is a problem, oil will boil off and pop a hole.
Be good learning experience however you go about. First for me was couple yrs after highschool
1978 using Tig with argon. Aluminum is not a forgiving type of material to work with when it's thin, Tig and SS is my favorite.
|
|
|
Reply With Quote
|
|
12-17-2020, 11:50 AM
|
#28
|
|
Senior Member
|
|
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
|
|
|
Senior Member
Join Date: Feb 2019
Location: Hot Springs, AR
Posts: 4,410
Real Name: Patrick
|
Quote:
Originally Posted by KylieHodges
Hi guys, I understand that this thread is quite old, but I would like to give my husband an angle grinder. He dreamed about it but I really think that it is dangerous for home use, especially if you don't have any experience. What do you think about that?
|
As long as you take the guard off and use one of the blades: https://www.homedepot.com/p/King-Art...E&gclsrc=aw.ds I think it's perfectly safe!
__________________
2000 SR5 V6 Manual 4WD https://www.toyota-4runner.org/3rd-g...biography.html
2000 Limited V6 Auto E-Locker Sold 3/2022
|
|
|
Reply With Quote
|
|
12-17-2020, 11:56 AM
|
#29
|
 |
Senior Member
|
|
Join Date: Oct 2014
Location: Seattle
Posts: 1,037
Real Name: Scott
|
|
|
Senior Member
Join Date: Oct 2014
Location: Seattle
Posts: 1,037
Real Name: Scott
|
Quote:
Originally Posted by KylieHodges
Hi guys, I understand that this thread is quite old, but I would like to give my husband an angle grinder. He dreamed about it but I really think that it is dangerous for home use, especially if you don't have any experience. What do you think about that?
|
No offense, but the only thing you have to ask yourself is "Is my husband an idiot?" If the answer is no, then using an angle grinder at home is just fine. Get him some breathing and eye protection while you're at it too.
|
|
|
Reply With Quote
|
|
12-17-2020, 01:12 PM
|
#30
|
|
Member
|
|
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
|
|
Member
Join Date: Jun 2018
Location: Northern NM
Age: 26
Posts: 214
|
Quote:
Originally Posted by KylieHodges
Hi guys, I understand that this thread is quite old, but I would like to give my husband an angle grinder. He dreamed about it but I really think that it is dangerous for home use, especially if you don't have any experience. What do you think about that?
|
Only one way to get experience.
So long as eyes and ears are protected, worst he can do it get a nasty scar.
Not at all as dangerous as a chainsaw, where even if you do have the proper PPE, its easy for an idiot to chop off a hand (coming from the idiot who nearly cut his leg off with a chainsaw.)
__________________
2000 SR5 - Build Thread
|
|
|
Reply With Quote
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is On
|
|
|
|
Linear Mode
