Vehicles after change point in 1982
Checking Air Conditioner:
Unscrew the protective cap.
Connect blue charging hose (1) with the valve vore remover (2) on the low pressure
side of the air conditioner.
Connect the high pressure hose in the same manner as the low pressure hose.

Insert the thermometer in the air outlet grill.
Testing Conditions:
1. Car parked in shade (indoors).
2. Air conditioner discharged and charged.
Correct type and amount of oil in the compressor.
3. Engine running at 2,000 rpm and air conditioner switched on.
4. Doors shut.

Close all valves of the discharging and charging station.
Only open charging valve (5) or (23).
Read operating pressure values on low or high pressure gages (3 or 21) and compare
with the nominal value graph 730 64 334.
Always check only one pressure range.

(1) = Pressure scale in bar
(2) = Temperature scale in degrees Celsius
(3) = Temperature scale - ambient temperature - in degrees Celsius
(4) = Tolerance range - high pressure range
(5) = Tolerance range - center nozzle air outlet
(6) = Tolerance range - low pressure range

Unscrew protective cap (1).
Screw on valve core remover (2).

Open shutoff valve (1).
Unscrew the valve core with valve turner (2).

Pull back valve turner (2) together with the valve core.
Close shutoff valve (1).

Unscrew coupling nut (3) and take off avlve turner (2) with valve core (4).

Installation:
The refrigerant-resistant valve cores can be recognized on the transparent
seal (1).