Pretty Slick Jimmy....
and Subtle to boot....

Unique fittings for each different refrigerant. See the section titled "Unique Fittings" in this page of the IMACA study guide: http://www.imaca.org/sg-14.htm

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Rick Miley
2014 Tesla Model S
2018 Tesla Model 3
2017 Nissan LEAF
Former MB: 99 E300, 86 190E 2.3, 87 300E, 80 240D, 82 204D Euro
Chain Elongation References

Each new refrigerant must be used with a unique set of fittings to prevent the accidental mixing of different refrigerants.

My interpretation of the regulations was right on. It is obvious I read the regulations. thanks for posting the link

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My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory

Diesel Jim, If Brian's statement that Freeze12 is 80 percent 134a... then what is the possibility that it simply uses the 134a fittings ?

Rick, that was an excellant link.... I could have copied and pasted much of it instead of composing answers in this thread...

You know the sad part of this whole thread is that I put it up to help people. I am getting alot of hair splitting and bashing because I used Freeze 12.

Read my lips. Yes I would use Freeze 12 again, if you don't like it, don't use it.

I would have used R-12 if I had it, but was not worth waiting for. Bottom line is my A/C is 38 degrees, is yours????

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1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
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I love the smell of diesel smoke in my hair

Soon.

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I'm not a doctor, but I'll have a look.

'85 300SD 245k
'87 300SDL 251k
'90 300SEL 326k

Six others from BMW, GM, and Ford.

Liberty will not descend to a people; a people must raise themselves to liberty.[/IMG]

Yep, I am getting 38 degree vent temp and it would be lower if the climate control system weren't regulating it at 38.

I do wish that you wouldn't be given a hard time about this. You went to a lot of trouble to share your pictures etc. with everyone and it is appreciated. I hope I did not come off as critical. I did feel that it would be helpful to point out that the R4 is not a good candidate for rebuild, but sometimes you can get a good rebuilt unit.

I have made my opinion about alternative refrigerants known here on mshop. I will not use them for a multitude of reasons, but my goal is not to get in your business if you choose to use them. My goal is for everyone to understand the pros and cons involved. I also like to ensure that people know the law on such things. If they know the law and still choose to break it, that's totally the individuals choice. I won't call the law on anyone.

Good job on the writeup,

I was not really speaking to you Larry. I am going to try and get the vent temps to around 36 degrees. No not by more freon but with a few tricks that I MAY share if it works. However, given the bashing I got I may just keep future mods to myself.

Well I gotta go work on a Dodge automatic.

__________________
1981 300D 147k
1998 VW Jetta Tdi 320k
2001 Dodge Ram 2500 141k
1979 300D 234k (sold)
1984 300D "Astor" 262k(sold)
Mercedes How-To and Repair Pictorials
I love the smell of diesel smoke in my hair

diesel giant, I think 38 would be about as low as you could go before freezing your evaporator. I can't remember what my second cousin said about the relation to evap temp and vent temps. I would say 38 is a good mark to stick with.

Thanks
David

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2000 Honda Accord V6 137k miles

1972 300SEL 4.5 98k miles

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Share them with us...we love your writeup if not your choice of refrgerants.

__________________
Proud owner of ....
1971 280SE W108
1979 300SD W116
1983 300D W123
1975 Ironhead Sportster chopper
1987 GMC 3/4 ton 4X4 Diesel
1989 Honda Civic (Heavily modified)
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Section 609 MVAC Certified
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"He who fights with monsters might take care lest he thereby become a monster. And if you gaze for long into an abyss, the abyss gazes also into you." - Friedrich Nietzsche

Diesel Giant, I was quite interested in all of your writeups...I think I need all of them....

You keep linking to mbz.org for parts, why not here at the Shop where you are posting?

Also, you linked there to get the vacuum valve lever but I can't find that part anywhere on the website...am I missing something?

Thanks for taking the time to document all of the work you did.

__________________
1998 W202 C230 - The money pit of late.
1984 W126 300SD (356,800 miles) Gone to the wrenchapart
1984 W123 300D Gone to the wrenchapart
1972 W108 280SE 3.5 (sold but not forgotten)
1986 Buick Grand National 3.8l Turbo (86k miles)
1966 Glassic Model 'A' Replica http://www.glassicannex.org

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I agree with you. If the Freeze-12 is doing the job, why argue with success.

Oh, and BTW, for all his talk, ask Greg what his vent temperature is on the 240D.

I am not an expert but I would guess not. Since the purpose of the regulation is to facilitate easier refrigerant recycling you would want to keep 134a out of a system as pure as possible. The other 20% would have to be gotten out by a distilling or chemical process to get pure 134a. However you could recycle freeze-12 that is kept in only freeze-12 container and get freeze-12 by just removing oil and not refrigerant items.

Sometimes I am not anal enough but I am much more of a pragmatist. Not an anarchist. Unfortunately we had someone butt in here and I got a little ticked at him. Apologies to the rest of the posters. I should have been a lawyer except I can't stand the B.S.

__________________
My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory

The purpose for each individual refrigerant using unique fittings is an attempt to prevent contaminating recovered refrigerant. This is not usually a problem for the DIYer because they usually simply violate the law and vent it. It is a HUGE problem for those of us with recovery machines because if refrigerant is contaminated, we not only lose the refrigerant but have to pay big bucks to have it disposed of.

On the 124 car the automatic climate control system regulates the vent temp to keep it no lower than 38 degrees. Unless you do something on the sensor and control side of things you will not get it below 38. As pointed out by a previous poster, taking it below this mark runs a high risk of freezing the evaporator anyway.

Good luck,

Larry said it much better than I could but he is correct. This is the reason why I said you only have to worry about the feds if you contaminate someone elses refrigerant because you took it there without the appropriate fittings and warnings and they mixed it with other refrigerant. You can seperate refrigerants but it is different equipment. It also said that somewhere in the 609 study guide.

__________________
My Daily : 96 E-300 Diesel with 195,000 miles
Retired: 92 300D 2.5 T 345K miles and for sale
Retired: 95 E320 157K miles and currently parked with blown engine

Both retired cars are for sale as is my w124 shop inventory