Aircon

[shokenore]

NO is the answer "normal" rubber o rings are not suitable.

perhaps you should try smearing them with some crap or thread sealant as previously advised by some refrigeration engineer with 20 years experience or just whack the old ones back in and hope they still work. other than that im done with suggestions,as there is not such a thing as a "normal rubber o ring" and some people are sick of reading the junk i post.
Niffty nevs right ! depends on the gas...presuming you will use R134a then a standard commercial Nitrile NBR material will be fine. just make sure the sizes are right.

I give up

So would it really have been that hard just to have said "use a nitrile o ring"?obviuosly not .
You were the one that said in 99% of joints failures it was caused by some fitters smearing crap on the joints
Strange how you failed to mention the use of Hylomar or others in your discription of crap sealants by your logic the flight path to RAF Lyneham should be littered with crashed C130's or do they not use sealants on their joints?

I would have posted earlier but I was too busy repairing all my crappy joints .
I guess you have never seen a pipe fitter assembling a joint with Rocol Oilseal or PTFE tape or Boss White? or one of the many sealants available?
Have you never put Blue Hylomar on a old rocker cover gasket?

The OP asked a simple question I gave him a simple answer,an answer that I know works,how do I know it works ?because I have carried out the same repair at least six years ago on the truck I now have the honour to call my own .The air con in which is still working Thank You.

But hey what do I know I am just "some refrigeration engineer"

[lawsy]

Great, you are a star!
If you take paypal PM me the costs and your email.

Nice one
Dazza

I'll get them together mate and see what postage will be and let you know

[TonyN]

At the risk of being sensible in an entertaining thread, no ones mentioned refilling the A/C yet (unless I missed it)

2.4's use R12 gas, which Air-con guys shouldn't be using anymore.

R134a will munch all the seals in a 2.4's system over time, so they don't stay airtight for long, you'll have to regass lots, and it dosn't like the remaining oil and R12 that gets left in the system either.

There are so called 'drop in' gases you can replace R12 with, but its very expensive, and reportedly dosn't run as cool, but trucks I've had it put in don't feel to bad.

The only hassle with it is there isn't an industry standard, so you have to make sure you go to the same place every time you regass, as its not good to mix them.

Basically, are you sure its worth it? Just open a window.

[shokenore]

At the risk of being sensible in an entertaining thread, no ones mentioned refilling the A/C yet (unless I missed it)

2.4's use R12 gas, which Air-con guys shouldn't be using anymore.

R134a will munch all the seals in a 2.4's system over time, so they don't stay airtight for long, you'll have to regass lots, and it dosn't like the remaining oil and R12 that gets left in the system either.

There are so called 'drop in' gases you can replace R12 with, but its very expensive, and reportedly dosn't run as cool, but trucks I've had it put in don't feel to bad.

The only hassle with it is there isn't an industry standard, so you have to make sure you go to the same place every time you regass, as its not good to mix them.

Basically, are you sure its worth it? Just open a window.

Well said TonyN,
So many options and all costly my truck air con was drained , flushed ,cleaned , compressor "stripped" down and now uses R134a and poe oil.
I know of various conversions where the old R12 has been recovered and have had R134a put back in,yes they have needed to be topped up but whether any more than a normal system would be hard to tell.

[lawsy]

Basically, are you sure its worth it? Just open a window.

my thoughts exactly!!

[dazandcaz]

After all of the interesting posts, the last couple about not being able to use the correct gas and other problems due to this are probably right. If r134a got used is just gonna leak out elsewhere, would i be better off spending my money on new springs or spacers 'n' the likes.
Just for the record i am sat chillin, drinking beer and looking at bigger springs and b j spacers. I wonder what will get delivered after i have got really drunk tonight?

[shokenore]

I would say that till spring rolls around again the safe money would bet on the springs an b j spacers.

I'm sure halfruads did a gas in a can suitable for R12/R134a,I think it had some oil conditioner or similar ? and in case you wern't confused enough I know of plenty R12 systems still happily chugging along on their "new" r134a.

Just have a google of R12 drop ins http://www.airconditioningforcars.co.uk/ACpage15.htm

[lawsy]

Well seeing as I've just chucked all my air con stuff I'd go with springs. shocks, spacers etc...

[NiftyNev]

At the risk of being sensible in an entertaining thread, no ones mentioned refilling the A/C yet (unless I missed it)

Thought that would have been obvious if the o rings are being replaced which is why I posted this.

The o rings depend on what gas you are using. Ask your local automotive air con guy about the correct ones.

Nev

As for the loctite, forget it. Probably cost more than the correct o rings.

Nev

[NiftyNev]

My opinion.

O rings, their construction and the compounds they are made of is way beyond understanding by anyone here, including me, so use what is designed for the system you are repairing and never use any other sealant or whatever, unless specifically stated by the manufacturer.

Nev

[TonyN]

pigeons...

[frontman]

Glad I took my aircon out now.

[andy_enuff]

Personally I much prefer to use Philadelphia Soft Cheese when I do head gaskets (the low fat stuff tho as the hardcore fatty stuff goes all slippery when melted)

I occasionally use small bagels or pretzels instead of o-rings - I find smearing them with peanut butter helps keep them in place while I do them up! Cinnamon bagels in preference, they don't rot like a plain bagel if you use R134a!

Somtimes I use a more official solution like just cutting up a simple piece of bread until it is the correct shape. No butter needed in this application as butter reacts badly with the bread once it is compressed - I think no-butter is what Toyota recommend.

There is more than one way to skin a cat I guess and a combination of different ways to do things - some of which carry more risk if you choose the wrong combinations and some which work fine (IF you know they work from previous experience or you don't mind risking it because you have assessed the potential issues correctly

[shokenore]

My air con works just fine R12 system now running on R134a.
The "o"rings (the twenty year old) were reassembled with a smear of loctite 577 they have not leaked , exploded ,caused any political unrest or contributed to the breakdown of society and as far as I know they were not the reason for starting the london riots.

SUMO

[dazandcaz]

"and as far as I know they were not the reason for starting the london riots."

How can you be so sure? no-one seems to know the real reason for this.