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3. Remove exhaust front tube mounting bracket and then remove exhaust front tube. Refer to EX-2,
"EXHAUST SYSTEM" .
4. R NISSAN TEANA 2003 Service Manual EXHAUST MANIFOLD AND THREE WAY CATALYST
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3. Remove exhaust front tube mounting bracket and then remove exhaust front tube. Refer to EX-2,
"EXHAUST SYSTEM" .
4. R](/manual-img/5/57392/w960_57392-2248.png)
EXHAUST MANIFOLD AND THREE WAY CATALYST
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3. Remove exhaust front tube mounting bracket and then remove exhaust front tube. Refer to EX-2,
"EXHAUST SYSTEM" .
4. Remove heat insulator.
5. Disconnect harness connector and remove heated oxygen sen-
sor 1 on both banks with heated oxygen sensor wrench (SST).
Put marks to identify installation positions of each heated oxy-
gen sensor 1.
CAUTION:
Be careful not to damage heated oxygen sensor 1.
Discard any heated oxygen sensor 1 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
NOTE:
Figure is shown as an example of left bank.
6. Disconnect harness connector and remove heated oxygen sen-
sor 2 on both banks with heated oxygen sensor wrench (SST).
Put marks to identify installation positions of each heated oxy-
gen sensor 2.
CAUTION:
Be careful not to damage heated oxygen sensor 2.
Discard any heated oxygen sensor 2 which has been
dropped onto a hard surface such as a concrete floor;
replace with a new sensor.
7. Remove exhaust manifold covers (right and left banks) and three way catalyst covers.
8. Remove mounting bolts in the reverse order as shown in the fig-
ure to remove three way catalyst supports (right and left banks).
9. Remove three way catalysts (right and left banks) by loosening bolts first and then removing nuts.
CAUTION:
Handle carefully to avoid any shock to three way catalyst.
PBIC2503E
PBIC2462E
PBIC2544E
PBIC2463E
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10. Loosen mounting nuts in the reverse order as shown in the fig-
ure to remove exhaust manifolds (right and left banks).
11. Remove gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
INSPECTION AFTER REMOVAL
Surface Distortion
Check the surface distortion of the exhaust manifold mating sur-
faces with straightedge and feeler gauge.
If it exceeds the limit, replace exhaust manifold.
INSTALLATION
Note the following, and install in the reverse order of removal.
Exhaust Manifold Gasket
Install in the direction indicated in the figure.
PBIC2464E
Limit : 0.3 mm (0.012 in)
PBIC1173E
KBIA1051E
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Exhaust Manifold
If stud bolts were removed, install them and tighten to the specified torque below.
Tighten mounting NISSAN TEANA 2003 Service Manual EXHAUST MANIFOLD AND THREE WAY CATALYST
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Exhaust Manifold
If stud bolts were removed, install them and tighten to the specified torque below.
Tighten mounting](/manual-img/5/57392/w960_57392-2250.png)
EXHAUST MANIFOLD AND THREE WAY CATALYST
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Exhaust Manifold
If stud bolts were removed, install them and tighten to the specified torque below.
Tighten mounting nuts in numerical order as shown in the figure.
Three Way Catalyst Supports
1. Temporarily tighten three way catalyst support mounting bolts.
2. Tighten three way catalyst support mounting bolts to specified
torque in numerical order as shown in the figure.
Heated Oxygen Sensor
Install heated oxygen sensors in the original position.
Install referring the following if the installation positions cannot
be identified.
*: Heated oxygen sensor 2 are same parts both bank 1 and
bank 2.
CAUTION:
Before installing new heated oxygen sensor, clean exhaust
system threads using heated oxygen sensor thread cleaner (commercial service tool) and apply
anti-seize lubricant (commercial service tool). : 15.4 N·m (1.6 kg-m, 11 ft-lb)
PBIC2464E
PBIC2463E
Glass tube color
Heated oxygen sensor 1 (bank 1) : Green
Heated oxygen sensor 1 (bank 2) : Black
Heated oxygen sensor 2* : White
PBIC2652E
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Do not over torque heated oxygen sensor. Doing so may cause damage to heated oxygen sensor,
resulting in “MIL” coming on.
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OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationBBS004VU
Refer to GI-10, "Components" for symbol marks in the figure.
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OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationBBS004VU
Refer to GI-10, "Components" for symbol marks in the figure.](/manual-img/5/57392/w960_57392-2252.png)
OIL PAN AND OIL STRAINER
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OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationBBS004VU
Refer to GI-10, "Components" for symbol marks in the figure.
REMOVAL
WARNING:
To avoid the danger of being scalded, do not drain engine oil when engine is hot.
NOTE:
When removing oil pan (lower) or oil strainer only, take step 1 then step 10 and 11.
1. Drain engine oil. Refer to LU-21, "
Changing Engine Oil" .
CAUTION:
Perform this step when engine is cold.
Do not spill engine oil on drive belts.
2. Drain engine coolant. Refer to CO-34, "
Changing Engine Coolant" .
1. Oil pan (upper) 2. O-ring 3. Oil pan gasket (front)
4. Oil pressure switch 5.Plug (VQ23DE)
Relief valve (VQ35DE)6. O-ring
7. Oil cooler 8. Connector bolt 9. Oil filter
10. Oil strainer 11. Drain plug 12. Drain plug washer
13. Oil pan (lower) 14. Rear plate cover 15. Harness bracket
16. Crankshaft position sensor (POS) 17. Seal rubber 18. Oil pan gasket (rear)
A. Refer to LU-22
B. To oil pump C. Oil pan side
D. VQ23DE E. VQ35DE
PBIC4533J
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CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
3. Remove the following:
Engine cover; Refer to EM-133, "INTAKE MA NISSAN TEANA 2003 Service Manual EM-146
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CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
3. Remove the following:
Engine cover; Refer to EM-133, "INTAKE MA](/manual-img/5/57392/w960_57392-2253.png)
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CAUTION:
Perform this step when engine is cold.
Do not spill engine coolant on drive belts.
3. Remove the following:
Engine cover; Refer to EM-133, "INTAKE MANIFOLD COLLECTOR" .
Splash guard (RH)
Exhaust front tube; Refer to EX-2, "EXHAUST SYSTEM" .
Drive belts; Refer to EM-128, "DRIVE BELTS" .
4. Remove A/C compressor with piping connected, and temporarily secure it to aside. Refer to ATC-133,
"Components" .
5. Remove three way catalysts (right and left banks) from exhaust manifolds (right and left banks). Refer to
EM-140, "
EXHAUST MANIFOLD AND THREE WAY CATALYST" .
6. Remove oil pressure switch. Refer to LU-20, "
OIL PRESSURE CHECK" .
7. Remove crankshaft position sensor (POS).
CAUTION:
Handle carefully to avoid dropping and shocks.
Do not disassemble.
Do not allow metal powder to adhere to magnetic part at sensor tip.
Do not place sensor in a location where it is exposed to magnetism.
8. Remove oil filter. Refer to LU-22, "
OIL FILTER" .
9. Remove oil cooler and water pipes (VQ35DE). Refer to LU-23, "
OIL COOLER (VQ35DE)" .
10. Remove oil pan (lower) as follows:
a. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
b. Insert seal cutter (SST) between oil pan (lower) and oil pan
(upper).
CAUTION:
Be careful not to damage the mating surfaces.
Do not insert screwdriver, this will damage the mating
surfaces.
c. Slide seal cutter by tapping on the side of the tool with hammer.
Remove oil pan (lower).
PBIC0782E
SEM365ED
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11. Remove oil strainer.
12. Remove oil pan (upper) as follows:
a. Remove transaxle joint bolts which pierce oil pan (upper).
b. Loosen mounting bolts in the reverse order as shown in the fig-
ure.
c. Insert suitable tool into the notch of oil pan (upper) as shown (1).
Pry off oil pan (upper) by moving tool up and down as shown (2)
to remove oil pan (upper).
PBIC1766E
SEM949G
PBIC1636E
SEM155F
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13. Remove O-rings from the bottom of cylinder block and oil pump.
14. Remove oil pan gasket.
INSPECTION AFTER REMOVAL
Oil Strainer
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil pan (upper) as follows:
a. Use scraper to remove old liquid gasket from mating surfaces.
Also remove old liquid gasket from mating surface of cylinder
block.
Remove oil liquid gasket from bolt holes and threads.
CAUTION:
Do not scratch or damage the mating surfaces when clean-
ing off old liquid gasket.
b. Install oil pan gaskets.
Apply liquid gasket to new oil pan gaskets as shown in the fig-
ure.
Use Genuine Liquid Gasket or equivalent.
PBIC1144E
PBIC1145E
MEM108A
PBIC2630E