Nissan GT-R. Instruction — part 157
PREPARATION
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PREPARATION
PREPARATION
Commercial Service Tool
INFOID:0000000009160184
Sealant or/and Lubricant
INFOID:0000000009160185
HFC-134a (R-134a) Service Tool and Equipment
• Never mix HFC-134a (R-134a) refrigerant and/or its specified lubricant with CFC-12 (R-12) refrigerant and/
or its lubricant.
• Separate and non-interchangeable service equipment must be used for handling each type of refrigerant/
lubricant.
• Refrigerant container fittings, service hose fittings and service equipment fittings (equipment which handles
refrigerant and/or lubricant) are different between CFC-12 (R-12) and HFC-134a (R-134a). This is to avoid
mixed use of the refrigerants/lubricant.
• Never use adapters that convert one size fitting to another: refrigerant/lubricant contamination occurs and
compressor malfunction may result.
Tool name
Description
Refrigerant identifier equipment
Checking for refrigerant purity and
system contamination
Power tool
For loosening bolts and nuts
RJIA0197E
PBIC0190E
Tool name
Description
HFC-134a (R-134a) refrigerant
Container color: Light blue
Container marking: HFC-134a (R-
134a)
Fitting size: Thread size
• Large container 1/2
″
-16 ACME
NISSAN A/C System Oil Type S
(DH-PS)
Type: Polyalkylene glycol oil (PAG),
type S (DH-PS)
Application:
HFC-134a (R-134a) swash plate com-
pressors (NISSAN only)
Capacity: 40 m
(1.4 US fl oz., 1.4
Imp fl oz.)
S-NT196
S-NT197
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REFRIGERANT
PERIODIC MAINTENANCE
REFRIGERANT
Collection and Charge
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SETTING OF SERVICE TOOLS AND EQUIPMENT
Discharging Refrigerant
Evacuating System and Charging Refrigerant
Procedure
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling recharging
equipment
JSIIA0238ZZ
1.
Shut-off valve
2.
A/C service valve
3.
Recovery/recycling recharging
equipment
4.
Refrigerant container (HFC-134a)
5.
Weight scale (J-39650)
6.
Vacuum pump (J-39649)
7.
Manifold gauge set (J-39183)
A.
Preferred (best) method
B.
Alternative method
C.
For charging
JSIIA0239ZZ
REFRIGERANT
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WARNING:
Never breathe 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 requirements
of SAE J-2210 [HFC-134a (R-134a) recycling equipment] or J-2209 [HFC-134a (R-134a) recovery equip-
ment]. Ventilate work area before resuming service if accidental system discharge occurs. Additional
health and safety information may be obtained from refrigerant and lubricant manufacturers.
1.
CHECK A/C SYSTEM
1.
Check that A/C system operates normally. (This work should be performed by GT-R certified NISSAN
dealer.)
2.
Check if there is a large amount of leakage of refrigerant or lubricant.
CAUTION:
Never perform the lubricant return operation if a large amount of leakage of lubricant is detected.
Is the inspection result normal?
YES
>> GO TO 2.
NO
>> Check for refrigerant leakage. Refer to
2.
LUBRICANT RETURN OPERATION
1.
Start the engine and run it as follows.
-
Engine speed: Idle – 1,200 rpm
-
A/C switch: ON
-
Fan speed: Maximum position
-
Set temperature: Full hot
-
Intake position: Recirculation (REC)
2.
Perform lubricant return operation for approximately 10 minutes.
3.
Stop the engine.
>> GO TO 3.
3.
CHECK RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Operate recovery/recycling recharging equipment.
CAUTION:
• Follow the instructions of the manufacturer for the handling or maintenance of the equipment.
• Never fill the equipment with undesignated refrigerant.
2.
Check the gauge pressure of recovery/recycling recharging equipment.
Is there pressure?
YES
>> GO TO 4.
NO
>> GO TO 5.
4.
DISCHARGE REFRIGERANT INSIDE PIPES
Discharge the refrigerant from the high-pressure hose and low-pressure hose of recovery/recycling recharging
equipment.
>> GO TO 5.
5.
CONNECT RECOVERY/RECYCLING RECHARGING EQUIPMENT
1.
Remove the service valve caps from the vehicle.
2.
Connect recovery/recycling recharging equipment to the service valves.
>> GO TO 6.
6.
DISCHARGE REFRIGERANT FROM THE VEHICLE
Operate recovery/recycling recharging equipment to discharge the refrigerant from the vehicle.
>> GO TO 7.
7.
REMOVE ANY REMAINING REFRIGERANT
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< PERIODIC MAINTENANCE >
REFRIGERANT
Evacuate air for approximately 10 minutes or more to remove any remaining refrigerant integrated to the com-
pressor oil, etc.
>> GO TO 8.
8.
REPLACE OR REPAIR REFRIGERANT SYSTEM PARTS
1.
Replace or repair the malfunctioning part.
CAUTION:
• Always use a new O-ring for the parts that the cooler system was removed.
• Apply compressor oil to the O-rings of piping when installing the piping. However, never apply it
to the threads.
2.
Adjust the compressor oil amount according to the replaced parts. (This work should be performed by GT-
R certified NISSAN dealer.)
>> GO TO 9.
9.
EVACUATE AIR FROM THE REFRIGERANT SYSTEM
Evacuate air from the refrigerant system for approximately 25 minutes or more.
CAUTION:
Evacuate air for at least approximately 15 minutes or more if the parts are replaced.
>> GO TO 10.
10.
CHECK AIRTIGHTNESS OF REFRIGERANT SYSTEM
Check the airtightness of the refrigerant system for approximately 25 minutes or more.
CAUTION:
Check the airtightness for at least approximately 15 minutes or more if the parts are replaced.
Does the pressure decrease?
YES
>> GO TO 11.
NO
>> GO TO 8.
11.
CHECK REFRIGERANT LEAKAGE
1.
Connect refrigerant recovery/recycling recharging equipment or manifold gauge set (SST: J-39183).
2.
Charge the refrigerant of approximately 200 g (7.05 oz) to the refrigerant system.
3.
Check for refrigerant leakage. Refer to
.
NOTE:
When using electrical leak detector (SST: J-41995). Refer to
.
Is the inspection result normal?
YES
>> GO TO 12.
NO
>> Repair or replace parts according to the inspection results.
12.
CHARGE REFRIGERANT
1.
Connect recovery/recycling recharging equipment or manifold gauge set (SST: J-39183).
2.
Evacuate air again.
3.
Charge the specified amount of refrigerant to the refrigerant system.
>> GO TO 13.
13.
CHECK REFRIGERANT LEAKAGE
Check for refrigerant leakage again. Refer to
.
NOTE:
When using electrical leak detector (SST: J-41995). Refer to
Is the inspection result normal?
YES
>> GO TO 14.
NO
>> GO TO 6.
14.
CHECK OPERATION
Check the A/C system for normal operation. Refer to
.
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