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#1
07-11-2011, 06:05 PM
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AC hose assembly questions.
I'm replacing most of my AC components, compressor, condenser etc. All the fittings are O-ring type except at the evaporator.
I've never dealt with this type of stuff so any advice about keeping things leak free would be welcome. How tight, using "nylog" etc.
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My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD Last edited by 1980sd; 07-11-2011 at 06:52 PM. 
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#2
07-11-2011, 07:19 PM
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Pictures would help...
When I constructed my indash Karman Ghia AC from three different hang on units.... I found that the fittings which were proper for what I was doing simply had arms on the outside...and concentric ribs ... the arms were to ' locate ' the SS screw up type hose clamps... But without pictures of what you are facing this is just filler till you post them....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#3
07-11-2011, 07:31 PM
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Quote:
I'll be back...
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My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD
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#4
07-11-2011, 07:42 PM
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LOL
No chance that your descriptive abilities are at fault ?
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#5
07-11-2011, 07:52 PM
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2000 words for better clarification... :
  The whole thing has fittings like these. I've never fooled with them before... Kind of weird that the "bubble" on the aluminum tube doesn't fit into the counterbore where the O-ring fits. all the fittings on the condenser, drier, etc are like this. Strange to me to me... Seems like it would leak? Help me Greg  aww, come on...
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My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD Last edited by vstech; 07-12-2011 at 08:28 AM.
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#6
07-11-2011, 08:19 PM
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With the Nylog... I think you will be fine..
but what about the color of the O rings.. have you decided which refrigerant you are going to use ? Color of Nylog will have to match refrigerant....
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1980 240d , chain elongation, cam marks reference: http://www.peachparts.com/shopforum/showthread.php?threadid=10414 http://www.peachparts.com/shopforum/diesel-discussion/305365-9-degrees-chain-stretch.html evap fin cleaning: http://www.peachparts.com/shopforum/showthread.php?t=156207&highlight=evaporator A/C thread http://www.peachparts.com/shopforum/diesel-discussion/297462-c-recommendations-mb-vehicles.html
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#7
07-11-2011, 08:39 PM
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All the fittings I have came with green O rings and I don't know what that means...
I'm going with 134a to start with and I would like to be backwards compatible to r12. My compressor shipped with PAG 100 and it says compatible with r12 and 134a. It's coming down to the wire now 
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My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD
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#8
07-12-2011, 06:49 AM
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The Bubble ring on the Tube is a "Locator" for the O-Ring
"Snug" (Without dreaming of Stripping the Threads) is the Operative word.
['Could there BE Different Types/Colors of Nylog depending on the Refrig/Lube ?] (I'm So Backwards) [I'd Start Out with an R12 system.'Cause I KNOW I'd NEVER Wanna "Convert" to 134.] (That Damn Pesky R12 just blows SO Cold,I'd forget 134 ever existed!)
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'84 300SD sold 124.128
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#9
07-12-2011, 08:31 AM
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if the bubble cannot fit inside the fitting, then the o-ring should be thick enough to fill the void I'd think. are those fittings the ones supplied with the lines?
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John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread "as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do! My drivers: 1987 190D 2.5Turbo 1987 560SL convertible 1987 190D 2.5-5SPEED!!!  1987 300TD 2005 Dodge Sprinter 2500 158"WB 1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
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#10
07-12-2011, 07:16 PM
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Quote:
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My occupational hazard bein' my occupation's just not around... 1980 300SD 1980 300SD
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#11
07-12-2011, 07:41 PM
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I would expect the o ring to be compressed when the fitting is tight. Having it "float around" in there doesn't sound like it would work well.
-J
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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket  Tesla Model 3. 205,000 miles. Been to 48 states! Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels. 2014 Cadillac ELR 2013 Fiat 500E.
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