open gas tank NISSAN TEANA 2014 Service Manual

THERMOSTAT AND THERMOSTAT HOUSINGCO-49
< REMOVAL AND INSTALLATION > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
CO
NP
O
THERMOSTAT AND THERMOSTAT HOUSING
Exploded ViewINFOID:0000000009460422
WARNING:
Do not remove the radiator cap when the engine is hot. Serious burns could occur from high-pressure
engine coolant escaping from the radiator. Wrap a thick cloth around the cap. Slowly push down and
turn it a quarter turn to allow built-up pressure to escape. Carefully remove the cap by pushing it down
and turning it all the way.
NOTE:
When removing components such as hoses, tubes/lines, etc. , cap or plug openings to prevent fluid from spill-
ing.
Removal and InstallationINFOID:0000000009460423
REMOVAL
1. Drain engine coolant from the radiator. Refer to CO-36, "Changing Engine Coolant".
CAUTION:
Perform when engine is cool.
2. Remove the core support cover clips (A), then remove the core support cover (1).
3. Remove front air duct. Refer to EM-144, "Removal and Installation"
.
4. Disconnect radiator hose (lower).
5. Remove coolant reservoir hose.
6. Remove coolant reservoir tank. Refer to CO-41, "Removal and Installation"
.
7. Disconnect IVT control valve connector.
AWBIA1106GB
1. Gasket 2. Thermostat assembly
ALKIA2602ZZ
Revision: November 20132014 Altima NAM

HA-18
< SYMPTOM DIAGNOSIS >
REFRIGERATION SYSTEM SYMPTOMS
REFRIGERATION SYSTEM SYMPTOMS
Trouble Diagnosis For Unusual PressureINFOID:0000000009463923
Diagnose using a manifold gauge whenever system’s high and/or low side pressure(s) is/are unusual. The
marker above the gauge scale in the following tables indicates the standard (usual) pressure range. Refer to
above table (Ambient air temperature-to-operating pres sure table) since the standard (usual) pressure, how-
ever, differs from vehicle to vehicle.
Symptom TableINFOID:0000000009463924
Gauge indication Refrigerant cycle Probable cause Corrective action
Both high and low pressure sides
are too high. The pressure returns to nor-
mal soon after sprinkling wa-
ter on condenser. Overfilled refrigerant. Collect all refrigerant, evacuate
refrigerant cycle again, and
then refill it with the specified
amount of refrigerant.
Air flow to condenser is insuf-
ficient. Insufficient condenser cooling
performance.
• Poor fan rotation of radiator and condenser.
• Improper installation of air
guide.
• Clogged or dirty condenser fins. • Repair or replace malfunc-
tioning parts.
• Clean and repair condenser
fins.
When compressor is stopped,
a high-pressure reading
quickly drops by approximate-
ly 196 kPa (2 kg/cm
2, 28 psi).
It then gradually decreases. Air mixed in refrigerant cycle.
Collect all refrigerant, evacuate
refrigerant cycle again, and
then refill it with the specified
amount of refrigerant.
• Low-pressure pipe is cooler than the outlet of evapora-
tor.
• Low-pressure pipe is frost- ed. Expansion valve opened too
much (excessive flow of refrig-
erant). Replace expansion valve.
High-pressure side is excessively
high and low-pressure side is too
low.
High-pressure pipe and upper
side of condenser become
hot, however, liquid tank does
not become so hot. Clogged or crushed high-pres-
sure pipe located between
compressor and condenser. Repair or replace the malfunc-
tioning parts.
High-pressure side is too low and
low-pressure side is too high. • The readings of both sides
become equal soon after
compressor operation
stops.
• There is no temperature dif- ference between high- and
low-pressure sides. Malfunction in compressor sys-
tem (insufficient compressor
pressure operation).
• Damage or breakage of
valve.
• Malfunctioning gaskets. Replace compressor.
AC359A
AC360A
AC356A
Revision: November 20132014 Altima NAM

OIL COOLERLU-33
< REMOVAL AND INSTALLATION > [VQ35DE]
C
D E
F
G H
I
J
K L
M A
LU
NP
O
When removing components such as hoses, tubes/lines, etc.
, cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Remove the engine under cover. Refer to EXT-17, "Removal and Installation".
2. Remove the RH wheel and tire. Refer to WT-53, "Inspection"
.
3. Remove the front fender protector side cover RH. Refer to EXT-26, "FENDER PROTECTOR : Exploded
View".
4. Drain engine coolant. Refer to CO-36, "Changing Engine Coolant"
.
CAUTION:
Do not spill coolant on the drive belt.
5. Disconnect water hoses from oil cooler.
6. Remove the oil filter. Refer to LU-27, "Removal and Installation"
.
7. Remove oil cooler.
8. Remove core support cover. Refer to DLK-179, "Removal and Installation"
.
9. Remove front air duct. Refer to EM-84, "Removal and Installation"
.
10. Remove reservoir tank. Refer to CO-40, "Exploded View"
.
INSPECTION AFTER REMOVAL
1. Check oil cooler for cracks.
2. Check oil cooler for clogging by blowing through coolant inlet. If necessary, replace oil cooler.
Oil Pressure Relief Valve
Inspect oil pressure relief valve for movement, cracks and breaks by pushing the ball. If replacement is neces-
sary, remove valve by prying it out with a suitable tool. Install a new valve in place by tapping it.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-ring.
• Do not reuse copper gasket.
• When installing the oil cooler, align the oil cooler slot with the stopper of the oil pan.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and the engine coolant level and add engine oil and engine coolant. Refer to LU-9, "Inspection"
and CO-11, "System Inspection".
2. Start the engine, and check that there is no leakage of engine oil or engine coolant.
3. Stop the engine and wait for 10 minutes.
4. Check the engine oil level and the engine coolant level again. Refer to LU-9, "Inspection"
and CO-11,
"System Inspection".
Revision: November 20132014 Altima NAM