Air Con recharge - port identification

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BigCatXJS

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Air Con recharge - port identification

Postby BigCatXJS » Mon Nov 20, 2017 7:36 pm

Evening All,

I'm looking to add some lub/sealant gass to my air con system as I have a very small leak somewhere that causes the system to discharge over a period of 6 to 9 months. The last time it was checked (6 months ago) it was holding vacuum okay. The compressor is still kicking in but I'm getting a lot of hissing and wheezing noises (the car not me!!) when the air con system is running suggesting that the gas is getting low again. It did this last year before I lost the cold air.

Could someone let me know which (out of locations 1 and 2) is the air con low side port?
XJ40.png
Its a 1994 4.0 Sovereign with a R134 system.

Thanks, Rich
1989 Jaguar XJ-S V12 HE 5-speed manual
1994 Jaguar XJ40 Sovereign
2007 Mercedes CLK350 AMG Convertible
2010 BMW E92 3 Series Coupe heavy oil burner

Past Masters:
1996 Daimler Six LWB
2004 Volvo S60 D5 (RICA 210bhp)
1985 E28 BMW M535

davidr

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Location: Salisbury, Wilts

Re: Air Con recharge - port identification

Postby davidr » Mon Nov 20, 2017 9:23 pm

The 2 ports should be different sizes so they can't be mixed up. If you're using a top up kit then it should only fit on one port.
This should be the low pressure port which is the one leading to the compressor.
XJS FORUM COORDINATOR
1996 XJS Celebration Conv. (shown on the JEC stand at NEC Nov 2015)
2001 XKR Convertible

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1989 XJ-S V12 Coupe. 2006 XJ TDVi Sovereign. 1995 XJ6 3.2. 2013 XF 2.2d. 2009 X Type 2.0d Sovereign estate

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BigCatXJS

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Re: Air Con recharge - port identification

Postby BigCatXJS » Wed Nov 22, 2017 4:40 pm

Thanks David - I'll check this at the weekend when the XJ40 is back at home (currently pressed into service by my wife for most of this week).
1989 Jaguar XJ-S V12 HE 5-speed manual
1994 Jaguar XJ40 Sovereign
2007 Mercedes CLK350 AMG Convertible
2010 BMW E92 3 Series Coupe heavy oil burner

Past Masters:
1996 Daimler Six LWB
2004 Volvo S60 D5 (RICA 210bhp)
1985 E28 BMW M535


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