HEATER, AIR CONDITIONER AND VENTILATION ± On-vehicle Service
55-14
REFILLING OF OIL IN THE A/C SYSTEM
Too little oil will provide inadequate compressor lubrication
and cause a compressor failure. Too much oil will increase
discharge air temperature.
When a compressor is installed at the factory, it contains 120
mȏ of refrigerant oil. While the A/C system is in operation,
the oil is carried through the entire system by the refrigerant.
Some of this oil will be trapped and retained in various parts
of the system.
When the following system components are changed, it is
necessary to add oil to the system to replace the oil being
removed with the component.
Compressor oil: ZXL 200PG
Quantity
Condenser: 10 mȏ
Evaporator: 40 mȏ
Suction hose: 6.5 mȏ
PERFORMANCE TEST
1. The vehicles to be tested should be in a place that is
not in direct sunlight.
2. Close the high and low-pressure valve of the gauge
manifold.
3. Connect the charging hose (blue) to the low-pressure valve
and connect the charging hose (red) to the high-pressure
valve of the gauge manifold.
4. Install the quick joint (for low-pressure) to the charging
hose (blue), and connect the quick joint (for high-pressure)
to the charging hose (red).
5. Connect the quick joint (for low-pressure) to the
low-pressure service valve and connect the quick joint
(for high-pressure) to the high-pressure service valve.
NOTE
The high-pressure service valve is on liquid pipe A and
the low-pressure service valve is on the suction hose.
Caution
To connect the quick joint, press section ªAº firmly
against the service valve until a click is heard.
When connecting, run your hand along the hose while
pressing to ensure that there are no bends in the hose.
6. Start the engine.
Low-pressure valve
High-pressure valve
Gauge manifold
Charging
hose (red)
Charging
hose (blue)
Adaptor
valve (for low
pressure)
Sleeve
Adaptor valve
(for high pressure)
Low-
pressure
service
valve
High-
pressure
service
valve
A
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