Re-Gassing The Air Con - How Much Liquid / Pressure?

[Fraz-ktf]

Hi.

 

having successfully re-gassed my Passat using a can from Halfords some years back, I find I need to do the same with the Galaxy.

 

Does anyone know which pipe out of the two and how much to put in please?

 

thanks

[gregers]

fraz do a search m8,been asked before.

[seatkid]

You may find it quicker and cheaper to have it done at Kwikfit.

 

A/c systems are filled by weight of gas and not volume or pressure.

 

The a/c machine (as used by all a/c specialists and the dealers) connects to both connections (high pressure is located at the front and low pressure to the side) and the machine vacuums out the refrigerant (high pressure port I think)- weighing it in the process - some lubricant will also be extracted. A vaccum is then held for 20-30 minutes, both to remove any moisture (which boils off) and to check there is no leak (from a hole). It then refills (low pressure port I think) with an accurate weight of R134a and the same amount of PAG oil that was extracted plus 10ml.

 

At kwikfit, if the a/c isnt working better (conditions apply) at the end of the procedure, then you dont have to pay! Otherwise its £49 - during the winter months they usually have a special offer at £39 or £29.

 

The weight of gas required is on a label next to the bonnet catch. There are 2 figures (in grams) - the higher weight is if your car has the true dual a/c system (with overhead rear passenger vents and only one opening rear quarter window). The lower weight is for the standard system fitted on the majority of cars.