Klima claims they did a volume calculation and the "service loop" is to maintain the stock volume of the A/C charge.

However, I do not see how this is needed for a California as already the hose travels more distance than a strait shot.

Okay, now see that tucked in; odd they didn't mention that when I claimed wrong. Anyway, in the past, except the fact that too short.

To to sum up, are you saying just run a hose from the Sanden to the stock hose connection?

__________________
Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.

The metal suction hose that goes across in front of the valve cover is slightly different in the 1985 CA model. It doesn't bend as much towards the front as others. When I installed an earlier engine in my 1985 CA car I had to bend that tube backwards slightly to mate with the factory rubber suction hose. But, smart to change that rubber hose anyway, in which case just cut it longer to fit the federal tube (I later changed mine).

The lower high-pressure tube assembly that snakes up the passenger side of the engine is also different in 1985 CA cars. I no longer have that in either my 1984 or 85, thinking it a clumsy path that made getting at the alternator bolts a pain, so ran a new hose straight across to the condenser (as Rollguy sells).

But why spend $$$ for a new tube assembly anyway. You can replace just the hose sections. I cut the ferrules off w/ a hacksaw + cutoff wheel and crimped on new hose. It is std size (-12 I recall). I used "reduced barrier" to keep smaller. I have an AC crimper and ferrules, but Oeticker stepless ear clamps would also look pretty (ebay) and even Breeze screw hose clamps (ebay) would work fine.

First I heard that R-134A requires less suction volume that R-12. Perhaps that was "inferred" because early AC systems usually had a small "resonator" chamber on the suction line. That probably wasn't needed when most switched from 2 piston to modern ~14 piston compressors (like Sanden, dbl-acting) for a smoother flow. R-134A came along soon after, so people might have imagined a correlation. Anyway, R-134A is soon to be history, so we can start new incorrect stories.

__________________
1984 & 1985 CA 300D's
1964 & 65 Mopar's - Valiant, Dart, Newport
1996 & 2002 Chrysler minivans

What do you mean stock hose connection? I was under the impression you are using a parallel flow condenser. If so, then the high pressure hose would go from the Sanden directly to the parallel flow condenser port.

Even if you are not using a PFC, you would still route the hose from the Sanden directly to the condenser. But make sure you have a service port along the new line as you just deleted the original. I do believe Klima's literature states that they do that.


.

__________________
1983 123.133 California
- GreaseCar Veg System

Bill, thank you so very much for the help!

I checked my R4. It clearly says "S" is the line that I am talking about. Checked my German, and druck is pressure.

Let us be clear, as I sense for some reason the California wagen is different from any other models, even sedans; due to the S.L.S.?

I also sense that there is language concerns. So, went and found a diagram, brought into InDesgn, and labeled with numbers that at least we use in class.

1) The low temperature, low pressure, vapor refrigerant is sucked into the compressor from the evaporator using the hose that crosses over the engine (hose 1).

2) The compressor then increases the pressure of the vapor refrigerant and subsequently becomes hot. It then flows through the hose under the radiator (2a), into a metal line (2b) that goes under the alternator, behind the alternator along the engine block, where a high pressure service port is located just above the alternator, but still under the exhaust and the turbocharger. It then transitions to a rubber hose (2c) that curves over the heater line, just above the coolant hose, and into another metal line (2d). This metal line 2d originally went directly into the serpentine/tube and fin, however, when one converts to a parallel flow condenser, the hose is a number 10 and the condenser is a number 8, so the "manifold" acts as also an adapter (this according to Klima). Anyway, back to the miraculous journey.

3) This high pressure and high temperature vapor rejects its heat and becomes cool to super cooled (good possibility the parallel super cools according to John, B.T.W.) and exits the condenser as a liquid and into hose 3a, which goes into a drier/accumulator. It then uses hose 3b to go to the expansion valve. This is where I lacked in my H.V.A.C. class and if understand correctly, the Second Law of Thermodynamics the energy is transferred via not only the temperature difference (delta T) of the air and refrigerant, but also the phase change and enthalpy, as the liquid refrigerant rapidly expands and becomes a low pressure liquid.

4) This low pressure and low temperature then via 4 enters the evaporator. Air blown over this cools the airstream and I.I.R.C. decreases enthalpy. Then starts all over.

My understanding is hose 1, 2b, 2c, and 3b are all unique to the 1985 California model. Is there any others?

Why a rubber line instead of metal?

So Rich basically did what I was thinking, except the front side?

Rather do it right and crimp the hoses, however, glad we all know our options.

Using the H.V.A.C. numbers, which is this ""resonator" chamber on the suction line."?

Klima replaces the stock hose 2a with a hose with a "service loop".

Think I am not communicating clearly. The hose under the radiator, 2a, does not directly enter the condenser. I have described this path twice, F.Y.I.. Would it be better if went strait into the condenser?

How about going from number 10 to 8 hose, so strait connection without a "manifold"?

Yes, we must compare high and low pressure.

Which brings up the next point. What does one do to adapt the new R134a high side service port to a R12 manifold?

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__________________
Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.

The SLS does not change the way the A/C hoses are routed. You are again thinking too much into it.

....



If I am following what you are thinking correctly. Just hose sets 1 and 2 are different.


The 2 hose does go directly to the condenser.

Don't think of seperate hoses like 2a, 2b etc. Put it all together and it does go directly to the condenser. You said it yourself right here...

Quote: "2) The compressor then increases the pressure of the vapor refrigerant and subsequently becomes hot. It then flows through the hose under the radiator (2a), into a metal line (2b) that goes under the alternator, behind the alternator along the engine block, where a high pressure service port is located just above the alternator, but still under the exhaust and the turbocharger. It then transitions to a rubber hose (2c) that curves over the heater line, just above the coolant hose, and into another metal line (2d). This metal line 2d originally went directly into the serpentine/tube and fin, however, when one converts to a parallel flow condenser, the hose is a number 10 and the condenser is a number 8, so the "manifold" acts as also an adapter (this according to Klima). Anyway, back to the miraculous journey.
....."



Your use of the term manifold is incorrect. It's basically an adapter. But your high pressure hose will connect directly to the condenser without this adapter.

All you need is a R12 to r134 port adapter.


.

__________________
1983 123.133 California
- GreaseCar Veg System

Thank you so very much for all this help!

Then my engine oil lines are bent, since the bracket doesn't fit?

I am literal minded... I was thinking you were saying the Klima hose goes directly into the condenser.

So are you saying best to eliminate the adapter?

Wow, so shops still will put a R12 service port on a line despite it being the refrigerant is basically banned?

That then eliminates a need for a R12 manifold guage set to have an adapter.

__________________
Current fleet:

1985 Mercedes-Benz 280TE - Waiting for heart surgery.

1985 Mercedes-Benz 300TDT - Rear ended 23 September 2016 and now looking for a new home.

1979 Mercedes-Benz 300TD - Parted out.

1964 Volkswgen Beetle - Vater's since September 1968 and undergoing a restoration.

1971 Volkswagen Sunroof Squareback with F.I. - in need of full restoration.

1971 Volkswagen Squareback automatic with F.I. - Vacationing with her caretaker until he is in better health.

Hey Adriel, how are you getting along on your Klima Sanden kit install?
There is a forum member Demothen installing the same kit. You may want to ask him to take lots of pics.

__________________
85 300D turbo pristine w 157k when purchased 161K now
83 300 D turbo 297K runs great. SOLD!
83 240D 4 spd manual- parted out then junked