INFINITI FX35 2004 Service Manual

EM-26
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EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
EXHAUST MANIFOLD AND THREE WAY CATALYSTPFP:14004
Removal and InstallationABS004U4
REMOVAL
WARNING:
Perform the work when the exhaust and cooling system have completely cooled down.
1. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
2. Remove air cleaner case and air duct. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
3. Remove front and rear engine undercover and front cross bar with power tool.
4. Disconnect heated oxygen sensors 2 (bank 1 and bank 2) harness connectors.
5. Using heated oxygen sensor wrench (SST), remove heated oxy-
gen sensors 2 (bank 1 and bank 2).
CAUTION:

Be careful not to damage heated oxygen sensor.

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; replace with a new
sensor.
1. Heated oxygen sensor 2 (bank 1) 2. Three way catalyst (right bank) 3. Gasket
4. heated oxygen sensor 1 (bank 1) 5. Exhaust manifold cover (right bank) 6. Exhaust manifold (right bank)
7. Exhaust manifold (left bank) 8. Exhaust manifold cover (left bank) 9. Three way catalyst (left bank)
10. heated oxygen sensor 1 (bank 2) 11. Heated oxygen sensor 2 (bank 2)
SBIA0583E
KBIA1740E

EXHAUST MANIFOLD AND THREE WAY CATALYST
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Revision: 2004 November 2004 FX35/FX45
6. Remove exhaust mounting bracket between right/left catalytic converter and transmission. Refer to EX-3,
"EXHAUST SYSTEM" .
7. Remove three way catalyst (right and left bank).
8. Disconnect heated oxygen sensor 1 (bank 1 and bank 2) harness connectors and remove harness clip.
9. Using heated oxygen sensor wrench (SST), remove heated oxy-
gen sensor 1 (bank 1 and bank 2).
CAUTION:

Be careful not to damage heated oxygen sensor.

Discard any heated oxygen sensor which has been
dropped from a height of more than 0.5 m (19.7 in) onto a
hard surface such as a concrete floor; replace with a new
sensor.
10. Remove water pipes on both right and left side. Refer to CO-28, "
WATER OUTLET AND WATER PIPING"
.
11. Remove exhaust manifold cover (right and left bank).
12. Loosen nuts in the reverse order as shown in the figure to
remove exhaust manifold with power tool.
NOTE:
Disregard the numerical order No. 7 and No. 8 in removal.
13. Remove exhaust manifold gaskets.
CAUTION:
Cover engine openings to avoid entry of foreign materials.
SBIA0575E
PBIC2042E

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EXHAUST MANIFOLD AND THREE WAY CATALYST
Revision: 2004 November 2004 FX35/FX45
INSPECTION AFTER REMOVAL
Surface Distortion

Check the surface distortion of the exhaust manifold mating sur-
face with straightedge and feeler gauge.

If it exceeds the limit, replace exhaust manifold.
INSTALLATION
Note to the following, and install in the reverse order of removal.
Exhaust Manifold Gasket

Install in direction shown below. (Follow same procedure for
both banks.)

Locate thick side of port connecting part on right side from tech-
nician’s view.

Locate round press in thick side of port connecting part above
center level line of port.
Exhaust Manifold

If stud bolts were removed, install them and tighten to the speci-
fied torque below.

Install exhaust manifold in the numerical order as shown in the
figure.
NOTE:
Tighten nuts No. 1 and No. 2 in two steps. The numerical order
No. 7 and No. 8 shows second step.
Heated Oxygen Sensor
CAUTION:

Before installing a new heated oxygen sensor, clean exhaust system threads using heated oxygen
sensor thread cleaner tool (Commercial Service Tool: J-43897-18 or J-43897-12) and apply anti-
seize lubricant.Limit : 0.3 mm (0.012 in)
PBIC1096E
KBIA1051E
: 14.7 N·m (1.5 kg-m, 11 ft-lb)
PBIC2042E

EXHAUST MANIFOLD AND THREE WAY CATALYST
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Revision: 2004 November 2004 FX35/FX45

Do not over torque heated oxygen sensor. Doing so may cause damage to heated oxygen sensor,
resulting in the “MIL” coming on.

EM-30
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OIL PAN AND OIL STRAINER
Revision: 2004 November 2004 FX35/FX45
OIL PAN AND OIL STRAINERP F P : 1111 0
Removal and InstallationABS004U5
2WD MODEL
REMOVAL
CAUTION:
To avoid the danger of being scalded, never drain engine oil when engine is hot.
NOTE:
To remove oil pan (lower) only, take step 5, then step 20. Removal of step 1, hood assembly (step 2) and step
4 are unnecessary.
1. Remove front tire.
2. Remove hood assembly. Refer to BL-14, "
HOOD" .
3. Remove front and rear engine undercover with power tool.
4. Remove front cross bar with power tool. FSU-6, "
FRONT SUSPENSION ASSEMBLY" .
5. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
6. Drain engine coolant. Refer to CO-11, "
Changing Engine Coolant" .
1. Oil pan gasket (rear) 2. Oil pan (upper) 3. O-ring
4. Oil pan gasket (front) 5. Oil filter 6. Connector bolt
7. Oil cooler 8. O-ring 9. Relief valve
10. Oil pressure switch 11. Bracket 12. Oil strainer
13. Drain plug 14. Drain plug washer 15. Oil pan (lower)
16. Rear plate 17. Crankshaft position sensor (POS) 18. Seal rubber
19. Rear cover plate
SBIA0587E

OIL PAN AND OIL STRAINER
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Revision: 2004 November 2004 FX35/FX45
CAUTION:
Perform when engine is cold.
7. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
8. Remove air hose from air duct to mass air flow sensor side and electric throttle control actuator side.
Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
9. Removal engine rear lower slinger, and install engine rear slinger to sling engine assembly for positioning.
Refer to EM-8, "
Special Service Tools" .
10. Remove front suspension member. Refer to FSU-17, "
FRONT SUSPENSION MEMBER" .
11. Remove drive belt for alternator and power steering pump and A/C compressor. Refer to EM-15, "
DRIVE
BELTS" .
12. Remove alternator stay. Refer to SC-23, "
CHARGING SYSTEM" .
13. Remove starter motor. Refer to SC-10, "
STARTING SYSTEM" .
14. Remove alternator and power steering pump and A/C compressor idler pulley and bracket assembly.
Refer to EM-15, "
DRIVE BELTS" .
15. Disconnect A/T fluid cooler hoses, and remove oil cooler water pipe mounting bolt. Refer to LU-14, "
OIL
COOLER" .
16. Disconnect A/T fluid cooler tube.
17. 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 sensors in a location where they are exposed to magnetism.
18. Remove oil filter, as necessary. Refer to LU-10, "
OIL FILTER" .
19. Remove oil cooler, as necessary. Refer to LU-14, "
OIL COOLER" .
20. Remove oil pan (lower) as the following:
a. Loosen bolts in reverse order as shown in the figure to remove.
b. Insert seal cutter (SST) between oil pan (upper) and oil pan
(lower).
c. Slide seal cutter by tapping on the side of tool with hammer.
Remove oil pan (lower).
CAUTION:

Be careful not to damage the mating surface.

Do not insert flat-bladed screwdriver, this will damage the
mating surface.
21. Remove oil strainer.Slinger bolts:
: 28.0 N·m (2.9 kg-m, 21 ft-lb)
PBIC0782E
SEM960F

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OIL PAN AND OIL STRAINER
Revision: 2004 November 2004 FX35/FX45
22. Remove transmission joint bolts which pierce oil pan (upper). Refer to AT- 2 6 6 , "TRANSMISSION ASSEM-
BLY" .
23. Remove rear cover plate.
24. Loosen oil pan (upper) bolts with power tool in the reverse order
as shown in the figure to remove.

I n s e r t s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ( J - 3 7 2 2 8 ) ] b e t w e e n o i l
pan (upper) and cylinder block. Slide seal cutter by tapping on
the side of tool with a hammer. Remove oil pan (upper).
CAUTION:

Be careful not to damage the mating surface.

Do not insert a screwdriver, this will damage the mat-
ing surfaces.
25. Remove O-rings from bottom of cylinder block and oil pump.
26. Remove oil pan gaskets.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object attached.
INSTALLATION
1. Install oil pan (upper) as the following:
a. Use scraper to remove old liquid gasket from mating surfaces.
CAUTION:
Do not scratch or damage the mating surfaces when clean-
ing off old liquid gasket.

Also remove old liquid gasket from mating surface of cylinder
block.

Remove old liquid gasket from the bolt holes and threads.
PBIC0783E
PBIC1144E
PBIC1145E
MEM108A

OIL PAN AND OIL STRAINER
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Revision: 2004 November 2004 FX35/FX45
b. Apply liquid gasket to oil pan gaskets as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .

To install, align protrusion of oil pan gasket with notches of
front timing chain case and rear oil seal retainer.

Install oil pan gasket with smaller arc to front timing chain
case side.
c. Install new O-rings on cylinder block and oil pump side.
d. Apply a continuous bead of liquid gasket with tube presser [SST:
WS39930000 ( – )] to the cylinder block mating surface of oil
pan (upper) to a limited portion as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
CAUTION:

For bolt holes with marks (5 locations), apply liquid
gasket outside the holes.

Apply a bead of 4.5 to 5.5 mm (0.177 to 0.217 in) in diame-
ter to area “A”.

Attaching should be done within 5 minutes after coating.
e. Install oil pan (upper).
SEM964E
PBIC1145E
PBIC1144E
PBIC2300E

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OIL PAN AND OIL STRAINER
Revision: 2004 November 2004 FX35/FX45

Tighten bolts in numerical order as shown in the figure.

There are two types of mounting bolts. Refer to the following
for locating bolts.
f. Tighten transmission joint bolts. Refer to AT- 2 6 6 , "
TRANSMISSION ASSEMBLY" .
2. Install oil strainer to oil pump.
3. Install oil pan (lower) as the following:
a. Use scraper to remove old liquid gasket from mating surfaces.

Also remove old liquid gasket from mating surface of oil
pan (upper).
b. Apply liquid gasket thoroughly with tube presser [SST:
WS39930000 ( – )] as in illustration.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
NOTE:
Attaching should be done within 5 minutes after coating.M8 × 100 mm (3.97 in) : 5, 7, 8, 11
M8 × 25 mm (0.98 in) : Except the above
PBIC0783E
SEM958F
PBIC1146E

OIL PAN AND OIL STRAINER
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Revision: 2004 November 2004 FX35/FX45
c. Tighten bolts in numerical order as shown in the figure.
4. Install oil pan drain plug.

Refer to illustration of components of former page for installation direction of washer.
5. Install in the reverse order of removal after this step.
NOTE:
At least 30 minutes after oil pan is installed, pour engine oil.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level and add engine oil. Refer to LU-7, "ENGINE OIL" .
2. Start engine, and check there is no leak of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check the engine oil level again. Refer to LU-7, "
ENGINE OIL" .
PBIC0782E