Infiniti G20 (P11). Manual — part 465
HFC-134a (R-134a) Service Procedure
NCHA0159
SETTING OF SERVICE TOOLS AND EQUIPMENT
NCHA0159S01
Discharging Refrigerant
NCHA0159S0101
WARNING:
Avoid breathing A/C refrigerant and lubricant vapor or mist. Exposure may irritate eyes, nose and
throat. Remove HFC-134a (R-134a) from A/C system using certified service equipment meeting require-
ments of SAE J2210 (R-134a recycling equipment) or J2209 (R-134a recovery equipment). If acciden-
tal system discharge occurs, ventilate work area before resuming service. Additional health and safety
information may be obtained from refrigerant and lubricant manufacturers.
SHA179FA
Evacuating System and Charging Refrigerant
NCHA0159S0102
SHA180FA
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SERVICE PROCEDURE
MANUAL
HFC-134a (R-134a) Service Procedure
HA-191
Maintenance of Lubricant Quantity in
Compressor
NCHA0160
The lubricant in the compressor circulates through the system with
the refrigerant. Add lubricant to compressor when replacing any
component or after a large gas leakage occurred. It is important to
maintain the specified amount.
If lubricant quantity is not maintained properly, the following mal-
functions may result:
I
Lack of lubricant: May lead to a seized compressor
I
Excessive lubricant: Inadequate cooling (thermal exchange
interference)
LUBRICANT
NCHA0160S01
Name: Nissan A/C System Oil Type R
Part number: KLH00-PAGR0
CHECKING AND ADJUSTING
NCHA0160S02
Adjust the lubricant quantity according to the test group shown
below.
1
LUBRICANT RETURN OPERATION
Can lubricant return operation be performed?
I
A/C system works properly.
I
There is no evidence of a large amount of lubricant leakage.
Yes or No
Yes
©
GO TO 2.
No
©
GO TO 3.
2
PERFORM LUBRICANT RETURN OPERATION, PROCEEDING AS FOLLOWS
1. Start engine, and set the following conditions:
I
Test condition
Engine speed: Idling to 1,200 rpm
A/C or AUTO switch: ON
Blower speed: Max. position
Temp. control: Optional [Set so that intake air temperature is 25 to 30°C (77 to 86°F).]
2. Perform lubricant return operation for about 10 minutes.
3. Stop engine.
CAUTION:
If excessive lubricant leakage is noted, do not perform the lubricant return operation.
©
GO TO 3.
3
CHECK COMPRESSOR
Should the compressor be replaced?
Yes or No
Yes
©
GO TO HA-195.
No
©
GO TO 4.
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SERVICE PROCEDURE
MANUAL
Maintenance of Lubricant Quantity in Compressor
HA-193
4
CHECK ANY PART
Is there any part to be replaced? (Evaporator, condenser, liquid tank or in case there is evidence of a large amount of
lubricant leakage.)
Yes or No
Yes
©
GO TO HA-195.
No
©
Carry out the A/C performance test.
SERVICE PROCEDURE
MANUAL
Maintenance of Lubricant Quantity in Compressor (Cont’d)
HA-194
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