993 ac which nozzle to regas ?
Discussion
Pope said:
Doesn't sound like a standard unit; usually only have two...... High and Low pressure. Can you see any part numbers or manufacturers sticker on it?
i will have a look in the morning but it has two standard looking black caps on the valves and then another one in light grey with an L on it slightly below the other two, I had assumed one High one low and an oil drain / breather thing Phib
[/URL]With respect - if you don't know the answer to that question you probably should not be messing around "regassing" the system.
Take the car to an AC specialist who has the right kit. Or even to kwik-fit - they hook the car up to an automated machine that extracts the gas in the system (and tells you the weight so you know how much was lost), runs a vacuum to check for leaks and then add the correct weight of gas and oil as well as a leak detecting dye. An absolute bargain at 50 quid.
Take the car to an AC specialist who has the right kit. Or even to kwik-fit - they hook the car up to an automated machine that extracts the gas in the system (and tells you the weight so you know how much was lost), runs a vacuum to check for leaks and then add the correct weight of gas and oil as well as a leak detecting dye. An absolute bargain at 50 quid.
A regas connects to the two 'taps' under the black covers that are uppermost in the picture - top right of the compressor. They are different sizes so you cant get it wrong. You then want 840g of R134a (likely the machine may not hold the accurate fill data)
The machine is fully automated and you must connect up both pipes from it so it can extract the gas to check the vacuum pressure for no leaks and then fill along with some green UV lube which aids to keep seals fresh and assist with identifying leaks. In the picture you can see some green stuff around the taps probably from blow back when they took the pipes off.
I know Kwik Fit fitters can come across as numb as plss stones but believe me a chimp could do it.
The machine is fully automated and you must connect up both pipes from it so it can extract the gas to check the vacuum pressure for no leaks and then fill along with some green UV lube which aids to keep seals fresh and assist with identifying leaks. In the picture you can see some green stuff around the taps probably from blow back when they took the pipes off.
I know Kwik Fit fitters can come across as numb as plss stones but believe me a chimp could do it.
The R134a systems are idiot proof in terms of which connector is the low and high side. I suspect yours could be an R12 system with tyre valve type connections. In that case and in the R134a case, the fatter of the 2 pipes is the suction/low side and the thinner pipe is the discharge/high side. If filling with liquid rather than vapour, then the high side is to be used, however I would strongly advise to have system drained down first and carrying out a leak test and then a deep vacuum followed by correct oil and refrigerant. If its an R12 system then more work reqd.
You'll use the two black caps you can clearly see in the picture, ignore the grey one as you don't need to use it.
As you've had a new compressor recently but there's no/not enough gas in the system, you should have it charged with nitrogen to check for leaks. Most likely the o-ring seals on the compressor fittings have been 'pinched' when the compressor was fitted, or not replaced.
Most often when we do the A/C on old 911's we charge them up with nitrogen, run them for a few days and then check to see if the pressure has dropped because these cars often have very slow leaks.
Hope that's of some use!
As you've had a new compressor recently but there's no/not enough gas in the system, you should have it charged with nitrogen to check for leaks. Most likely the o-ring seals on the compressor fittings have been 'pinched' when the compressor was fitted, or not replaced.
Most often when we do the A/C on old 911's we charge them up with nitrogen, run them for a few days and then check to see if the pressure has dropped because these cars often have very slow leaks.
Hope that's of some use!
SilverArrows said:
You'll use the two black caps you can clearly see in the picture, ignore the grey one as you don't need to use it.
As you've had a new compressor recently but there's no/not enough gas in the system, you should have it charged with nitrogen to check for leaks. Most likely the o-ring seals on the compressor fittings have been 'pinched' when the compressor was fitted, or not replaced.
Most often when we do the A/C on old 911's we charge them up with nitrogen, run them for a few days and then check to see if the pressure has dropped because these cars often have very slow leaks.
Hope that's of some use!
That's brilliant and I suspect exactly the issue ( it wasn't me that changed the compressor it was the previous garage) As you've had a new compressor recently but there's no/not enough gas in the system, you should have it charged with nitrogen to check for leaks. Most likely the o-ring seals on the compressor fittings have been 'pinched' when the compressor was fitted, or not replaced.
Most often when we do the A/C on old 911's we charge them up with nitrogen, run them for a few days and then check to see if the pressure has dropped because these cars often have very slow leaks.
Hope that's of some use!
Many thanks
Phib
Gassing Station | Porsche General | Top of Page | What's New | My Stuff