Infiniti FX35 / FX45. Manual - part 666

EXHAUST MANIFOLD AND THREE WAY CATALYST

EM-181

< SERVICE INFORMATION >

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

16. Loosen mounting nuts in reverse order as shown in the figure to

remove exhaust manifold.

NOTE:
Disregard the numerical order No. 9 to 12 in removal.

17. Remove exhaust manifold gaskets.

CAUTION:

Cover engine openings to avoid entry of foreign materials.

INSPECTION AFTER REMOVAL

Surface Distortion

• Check the surface distortion of the each exhaust manifold flange

mating surface 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 exhaust manifold gasket with its directional protrusion set upward.
Refer to the figure of components on former page. Refer to "Removal and Installation".

Exhaust Manifold

A

: Left bank 

B

: Right bank

: Engine front

PBIC3300E

Limit

: 0.3 mm (0.012 in)

PBIC1550E

EM-182

< SERVICE INFORMATION >

[VK45DE]

EXHAUST MANIFOLD AND THREE WAY CATALYST

• Install exhaust manifold and tighten mounting nuts in numerical

order as shown in the figure.

NOTE:
Tighten mounting nuts No. 1 to 4 in two steps. The numerical order
No. 9 to 12 shown second steps.

Air Fuel Ratio Sensor and Heated Oxygen Sensor

• Install air fuel ratio sensors and heated oxygen sensors in the original position.
• Install referring the following if the installation positions cannot be

identified.

CAUTION:

• Before installing a new air fuel ratio sensor and heated oxy-

gen sensor, clean exhaust system threads using oxygen sen-
sor thread cleaner (commercial service tool: J-43897-18 or J-
43897-12), and apply anti-seize lubricant (commercial service
tool).

• Do not over torque air fuel ratio sensor and heated oxygen sensor. Doing so may cause damage to

the heated oxygen sensor, resulting in “MIL” coming on.

A

: Left bank

B

: Right bank

: Engine front

PBIC3300E

Glass tube color

Air fuel ratio sensor 1

: Black

Heated oxygen sensor 2

: White

PBIC2652E

OIL PAN AND OIL STRAINER

EM-183

< SERVICE INFORMATION >

[VK45DE]

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

OIL PAN AND OIL STRAINER

Component

INFOID:0000000001325778

• Refer to 

GI-8, "Component"

 for symbols in the figure.

Removal and Installation

INFOID:0000000001325779

REMOVAL

WARNING:

To avoid the danger of being scalded, do not drain engine oil when engine is hot.

1.

Remove front road wheels and tires.

2.

Remove hood assembly. Refer to 

BL-13, "Fitting Adjustment"

.

3.

Remove engine cover with power tool. Refer to 

EM-169, "Component"

.

4.

Remove front and rear engine undercovers with power tool.

5.

Drain engine oil. Refer to 

LU-24, "Changing Engine Oil"

.

CAUTION:

• Perform this step when engine is cold.

1.

Oil pan

2.

O-ring

3.

Crankshaft position sensor (POS)

4.

Baffle plate

5.

O-ring

6.

Baffle plate

7.

Oil pressure switch

8.

Gasket

9.

Oil strainer

10.

Drain plug

11.

Drain plug washer

12.

O-ring

13.

Oil cooler

14. Connector bolt

15.

Oil filter

16.

O-ring

17. Axle pipe

18.

O-ring

19.

Rear plate cover

20. Relief valve

A.

Oil pan side

B.

Refer to 

LU-27

C.

Refer to 

LU-26

PBIC4556E

EM-184

< SERVICE INFORMATION >

[VK45DE]

OIL PAN AND OIL STRAINER

• Do not spill engine oil on drive belts.

6.

Drain engine coolant. Refer to 

CO-37, "Changing Engine Coolant"

.

CAUTION:

• Perform this step when engine is cold.
• Do not spill engine coolant on drive belts.

7.

Remove drive belts. Refer to 

EM-170, "Component"

.

8.

Remove auto tensioner of power steering oil pump belt. Refer to 

EM-172, "Drive Belt Auto Tensioner and

Idler Pulley"

.

9.

Remove power steering oil pump with piping connected, and temporarily secure it aside with ropes or
equivalent. Refer to 

PS-27, "On-Vehicle Inspection and Service"

.

10. Remove A/C compressor with piping connected, and temporarily secure it aside with ropes or equivalent.

Refer to 

ATC-121, "Component"

.

11. Remove A/C compressor fitting bolts, and install A/C compressor temporarily on vehicle side with ropes or

equivalent.

12. Remove harness of lower side of oil pan.
13. Remove crankshaft position sensor (POS) from transmission.

CAUTION:

• Handle carefully to avoid dropping and shocks.
• Do not disassemble it.
• 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.

14. Install engine slinger and hang engine assembly to secure position. Refer to 

EM-237, "Component"

.

15. Remove front suspension member with power tool. Refer to 

FSU-16, "Removal and Installation"

.

16. Remove front final drive assembly. Refer to 

FFD-14, "Removal and Installation (VQ35DE Models)"

.

17. Remove oil filter. Refer to 

LU-26, "Removal and Installation"

.

18. Disconnect oil cooler water hoses, and remove oil cooler water pipe and oil cooler. Refer to 

LU-27, "Com-

ponent"

.

19. Remove oil pan as the follows:

a.

Remove rear plate cover.

b.

Remove transmission joint bolts which pierce oil pan. Refer to 

AT-243, "Removal and Installation (AWD

Models)"

.

c.

Loosen mounting bolts with power tool in reverse order as
shown in the figure.
NOTE:
Disregard the numerical order  No. 11 and 17 in removal.

d.

Insert seal cutter (SST) between oil pan and cylinder block.
Slide seal cutter by tapping on the side of seal cutter with ham-
mer. Remove oil pan.

CAUTION:

• Be careful not to damage the mating surfaces.
• Do not insert screwdriver, this will damage the mating

surface.

e.

Remove O-rings from bottom of oil pump and front cover.

20. As necessary, pull axle pipe from oil pan.

PBIC0194E

SEM365E