Nissan Maxima Service and Repair Manual: Oil
Description
MAINTENANCE OF OIL LEVEL
The compressor oil is circulating in the system together with the
refrigerant. It is necessary to fill compressor with oil when replacing A/C
system parts or when a large amount of refrigerant leakage is detected. It is
important to always maintain oil level within the specified level, otherwise
the following conditions may occur:
- Insufficient oil amount: Stuck compressor
- Excessive oil amount: Insufficient cooling (caused by insufficient
heat exchange)
Oil Type : A/C System Oil Type S
Inspection
If a compressor is malfunctioning (internal noise, insufficient cooling),
check the compressor oil.
1.COMPRESSOR OIL JUDGMENT
- Remove the compressor. Refer to HA-37, "Removal and Installation
for Compressor".
- Sample compressor oil and judge below according to the figure.
Judgement result 1>>Replace compressor only.
Judgement result 2>>Replace
compressor and liquid tank.
Perform Oil Return Operation
CAUTION: If a large amount of refrigerant or
oil leakage is detected, do not perform oil return operation.
- Start the engine and set to the following conditions:
- Engine speed: Idling to 1,200 rpm
- A/C switch: ON
- Fan (blower) speed: Maximum speed set
- Intake door position: Recirculation
- Temperature setting: Full cold
- Perform oil return operation for approximately 10 minutes.
- Stop the engine.
- Oil return operation is complete.
Oil Adjusting Procedure for Components Replacement Except Compressor
Fill with oil for the amount that is calculated according to the following
conditions.
Example: Oil amount to be added when replacing evaporator and
liquid tank [m (US fl oz, Imp fl oz)] = 45 (1.5, 1.6) + 15 (0.5, 0.5) + α
Oil Adjusting Procedure for Compressor Replacement
- New compressor
- Old compressor
- Recovery/recycling equipment
- Measuring cup X
- Measuring cup Y
- New oil
- Drain oil from the new compressor
into clean container
- Record amount of oil recovered
- Add an additional 5 m (0.2 US fl oz, 0.2
Imp fl oz) of new oil when replacing liquid tank
- Install new oil equal to recorded amounts
in measuring cups X plus Y
- Before connecting recovery/recycling equipment to vehicle, check
recovery/recycling equipment gauges.
No refrigerant pressure should be
displayed. If NG, recover refrigerant from equipment lines.
- Connect recovery/recycling equipment to vehicle. Confirm
refrigerant purity in supply tank using recovery/ recycling equipment and
refrigerant identifier. If NG, refer to HAC-92, "Working with HFC-134a
(R-134a)"
- Confirm refrigerant purity in vehicle A/C system using
recovery/recycling equipment and refrigerant identifier.
If NG, refer to
HAC-92, "Working with HFC-134a (R-134a)".
- Discharge refrigerant into the refrigerant recovery/recycling
equipment. Measure oil discharged into the recovery/recycling equipment.
- Drain the oil from the "old" (removed) compressor into a graduated
container and recover the amount of oil drained.
- Drain the oil from the "new" compressor into a separate, clean
container.
- Measure an amount of new oil installed equal to amount drained
from "old" compressor. Add this oil to "new" compressor through the
suction port opening.
- Measure an amount of new oil equal to the amount recovered during
discharging. Add this oil to "new" compressor through the suction port
opening.
- If the liquid tank also needs to be replaced, add an additional 5
m (0.2 US fl oz, 0.2 Imp fl oz) of oil at this time.
CAUTION: Do not add the 5 m (0.2 US fl oz,
0.2 Imp fl oz) of oil if only replacing the compressor and not the liquid
tank.
Description
CONNECTION OF SERVICE TOOLS AND EQUIPMENT
Shut-off valve
A/C service valve
Recovery/recycling/recharging equipment
Refrigerant container (HFC-134a)
Weight scale (J-39650 ...
Inspection
1.CHECK BLOWER MOTOR OPERATION
Check blower motor operation
2.CHECK COMPRESSOR OPERATION
Check compressor operatio
3.CHECK REFRIGERANT CYCLE PRESSURE
Connect recovery/recycling ...
Other materials:
Trunk lid opener
Wiring Diagram
...
Periodic maintenance
ENGINE COOLANT
System Inspection
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur
from high pressure
coolant escaping from the radiator. Wrap a thick cloth around the radiator cap.
Slowly turn it a quarter
turn to allow built-up pressure to escape. C ...
P0128 thermostat function
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC P0128 is displayed with DTC P0300, P0301, P0302, P0303, P0304, P0305 or
P0306, first perform
the trouble diagnosis for DTC P0300, P0301, P0302, P0303, P0304, P0305, P0306.
Engine coolant temperature has not risen enough to open the thermostat even ...