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It is very poorly (MHO) located in the suction hose close to the compressor. Unfortunately it is positioned upside down which can allow water to wick its way past the threads of the dust cap. In the past I've had difficulty removing the caps due to rust and corrosion and/or found the service port rusted. Best wishes
It is very poorly (MHO) located in the suction hose close to the compressor. Unfortunately it is positioned upside down which can allow water to wick its way past the threads of the dust cap. In the past I've had difficulty removing the caps due to rust and corrosion and/or found the service port rusted. Best wishes
Cliff
So I looked yesterday and couldn’t see it. Do you have to access it from below? (Seems incomprehensibly dumb as the HP is easily accessed right by the radiator) Seems crazy they relocated it from by the fuse box like a 944.
I’ve never attempted to access it from above. Remember, IMO this is very poorly placed. Look in the parts catalog illustration 815-13 item #57. You’ll get an idea of it’s location.
Thx. Man is that a blow to morale. Totally physically incapable of doing that currently. Pissed I didn’t have it recharged when I last did my belts, even though it didn’t really need it then.
It requires access from below. If you don't have the batwing on, you can get at it below the driver's side headlight area. If you do have it on, you'll need to take it off. I believe the dryer is right there also. I had some pictures of me doing a charge on my 951, but can't easily find them.
It requires access from below. If you don't have the batwing on, you can get at it below the driver's side headlight area. If you do have it on, you'll need to take it off. I believe the dryer is right there also. I had some pictures of me doing a charge on my 951, but can't easily find them.
Yeah, I have both pans and the DR-1 splitter on. It all has to come off to access the bottom of the engine. That’s why I put a cutout in my aluminum pan and put a Fumoto valve to drain my oil.
So I was spending some quality time with the PET today while I watched the Goodwood FoS and I noticed something.
Part # 17 is listed as “-92” and part# 57 is listed as “93-“. Both are simply listed as “valve.” No other description given. Also looking at the drawing, the way the hose with 57 on it cut away like that looks like it could possibly be an alternate/superseded design? Just guessing here. I need to pull that cover off and see it there’s a valve under there. I looked the other day before I started the thread and couldn’t see it in there. #17 is listed as a 928 XXX XXX XX part. Hose #35 is also listed as a “-92” part.
I’m only second guessing this because last time the shop recharged my AC, they only charged me for the R-12. If they had to pull the pans to access the valves, I’m reasonably certain they would have charged me at least .5 for the labor. And lost half the pan hardware, as was their SOP.
Yes, when taking the low pan off, hardware seems to disappear.
-Y
It hasn’t for me since I bought the kit from Arnwerx. I use one of those magnetic cups when I disassemble and keep it in a safe place until I reassemble. Last time I had my belts done, I took it all off before I took it to the shop. Probably saved me a .5 hr of flat rate, too.
It’s Murphy’s law. If you have plenty of spares, you never lose any.
So I was spending some quality time with the PET today,,,
Please correct me, but that upper valve appears to be the suction side, between the evaporator and the compressor.
Pressure side of an A/C system goes to the condensor first to cool the compressed gas, then to the evap case/expansion valve to release the gas and absorb the interior heat, then suction to the compressor to start the process again.
If correct that the upper valve is between the evap and compressor, then the upper valve is where you'd connect a retail can of R-12/-134 for recharging.
I believe the difference between -92 and 93+ (parts 17 and 57) is an adapter valve for R-12 vs R-134a. My '92 was converted to R-134a with those (as was common practice in the 90s/00s). - GA
EDIT: as an aside, the fittings for high and low side are different (both R-12 and R-134a*); you cannot fit a low-side hose adapter to a high side fitting. Saves us from ourselves...so if your NAPA quick refill hose fits on there, it's the correct side.
*R-12 uses threaded fittings; the high side is 3/8 and the low side 7/16. R-134a uses quick-couplers, with the high side 16mm and the low side 13mm.
So I was spending some quality time with the PET today while I watched the Goodwood FoS and I noticed something.
Part # 17 is listed as “-92” and part# 57 is listed as “93-“. Both are simply listed as “valve.”
When time allows, I'll have to check my '92. I do not remember a fitting in the location of item #17, but I did the R134 conversion a decade or more ago. I can promise you that my '93 cars do not have that fitting nor does the suction line follow the routing of the discharge line as suggested in the illustration.
On my 92 the low side port is down by the compressor, I chased a slow leak for years and got really familiar with it.
Tip: disconnect the charge hose with the compressor running so the pressure is lower and you lose less gas. Mind your fingers.
On my 92 the low side port is down by the compressor, I chased a slow leak for years and got really familiar with it.
Tip: disconnect the charge hose with the compressor running so the pressure is lower and you lose less gas. Mind your fingers.
Agreed, it's definitely down low by the compressor.
07-09-2024, 02:22 PM
Recharge AC question.
