pipe welding - Chrysler Voyager

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Herbert
Herbert
0

pipe welding - Chrysler Voyager

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Hello guys,

I have a Chrysler Voyager. My problem is that the low pressure air con pipe has a slice cut, caused by the wiper linkage. I think all the refrigerant has leaked out of the sytem. Could be at one side.

my questions are:

is it safe to weld the hole in the pipe (aluminium)?
sould i use pipe clamps (such as **** )?

Thanks for your answers and greets from Germany,

herbert
Last edited by Richard on Mon Feb 16, 2015 11:39 pm, edited 2 times in total.
Reason: Removed spam link to pipe clamp supplier. Sizes range from 27-355mm, that's a huge aircon system!

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PlatinumZealot
474
Joined: Thu Jun 12, 2008 2:45 am

Re: pipe welding - Chrysler Voyager

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You can use a flare fitting.
It is safe to weld if you remove the pipe from the car.
Not driving a Mercedes? Work harder!

SlowSteve
SlowSteve
1
Joined: Mon Aug 04, 2014 3:20 pm

Re: pipe welding - Chrysler Voyager

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Hi,

Two points:

1) unless you are 100% totally sure that no flameable gas or fluid of any sort, ever, has been in those pipes, get the pipe out of the car and fill it with sand/soil/flour or similar before you put any sort of flame near it. pipes exploding ruins a day and requires new underpants.

2) Welding is probably a bit too much effort - easy to blow out the pipe. I strongly suggest you use an aluminium brazing method instead. Most are fine with a regular butane flame ( actually - work better with regular butane ), and the brazing alloy will be stronger than the aluminium base layer.
Al Brazing with these rods is entirely black and white - it either works or it doesn't. the difference is how you prepare the metal. Clear up as normal, degrease etc, but the LAST act you do, before you put a flame to it, is scrub the area with a stainless steel wire brush. If you don't brush it, it won't work. If you use a brass brush, it won't work. Use a regular steel brush, it won't work. Use a stainless brush, it'll work perfectly.

Steve

Anishafatima
Anishafatima
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Joined: Tue Aug 06, 2019 8:19 am
Location: Dubai, UAE

Re: pipe welding - Chrysler Voyager

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Ya, it is safe to weld. It is preferred to weld away from the car to avoid further damage.
Be Good DO Good

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strad
271
Joined: Sat Jan 02, 2010 12:57 am

Re: pipe welding - Chrysler Voyager

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Why not just buy a new pipe? How expensive could it be?
To achieve anything, you must be prepared to dabble on the boundary of disaster.”
Sir Stirling Moss

Manoah2u
Manoah2u
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Joined: Sun Feb 24, 2013 1:07 pm

Re: pipe welding - Chrysler Voyager

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strad wrote:
Thu Aug 08, 2019 5:27 pm
Why not just buy a new pipe? How expensive could it be?
or look for another pipe at the car junkyard.
Dumpster sounds so much more classy. It's the diamond of the cesspools.