Infiniti FX35, FX50 (S51). Manual - part 1358

OIL COOLER

LU-29

< REMOVAL AND INSTALLATION >

[VK50VE]

C

D

E

F

G

H

I

J

K

L

M

A

LU

N

P

O

REMOVAL AND INSTALLATION

OIL COOLER

Exploded View

INFOID:0000000005245089

Removal and Installation

INFOID:0000000005245090

REMOVAL

WARNING:

Be careful not to get burned, as engine oil and engine coolant may be hot.

1.

Remove engine undercover with power tool.

2.

Drain engine coolant from radiator. Refer to 

LU-26, "Draining"

.

3.

Remove the following parts:
• Engine room cover: Refer to 

EM-174, "Exploded View"

.

• Reservoir tank: Refer to 

CO-39, "Exploded View"

.

• Alternator, water pump and A/C compressor belt: Refer to 

EM-163, "Exploded View"

.

4.

Remove water suction pipe mounting bolt. Refer to 

CO-46, "Exploded View"

.

5.

Disconnect water hoses and water pipe.
• When removing oil cooler only, pinch water hoses near oil cooler to prevent engine coolant from spilling

out.

• Remaining engine coolant in piping will come out. Use a tray to collect it.

CAUTION:

1.

Clamp

2.

Water pipe

3.

Water hose

4.

Oil filter

5.

Connector bolt

6.

Oil cooler

7.

Relief valve

8.

Water hose

A.

To water inlet

B.

To thermostat housing

C.

Refer to 

LU-28

: Engine front

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPBIA2308GB

LU-30

< REMOVAL AND INSTALLATION >

[VK50VE]

OIL COOLER

• Perform this step when the engine is cold.
• Never spill engine coolant on drive belts.

6.

Remove oil filter. Refer to 

LU-28, "Removal and Installation"

.

7.

Loosen connector bolt, and remove oil cooler.

CAUTION:

Never spill engine oil on rubber parts such as drive belts and engine mounting insulator.

INSTALLATION

Note the following items, and install in the reverse order of removal.
• Check that no foreign objects are adhering to the installation planes of oil filter and oil pan (upper).
• Align cutout (A) on oil cooler (1) with protrusion (B) on oil pan

(upper) side, and tighten connector bolt.

Inspection

INFOID:0000000005245091

INSPECTION AFTER REMOVAL

Oil Cooler

Check oil cooler for cracks. Check oil cooler for clogging by blowing through engine coolant inlet. If necessary,
replace oil cooler.

Relief Valve

Check relief valve with the following procedure.
• Press steel ball of relief valve using a clean plastic stick. Check that valve moves smoothly and proper

spring repulsion is felt.

• Replace relief valve, if necessary, with the following procedure.
- Remove the relief valve by prying using a screwdriver.

CAUTION:

Be careful not to damage the mounting hole.

- Press in the relief valve until it reaches a depth of 7 mm (0.28 in) from end surface of oil pan (upper) using

approximately 12 mm (0.47 in) diameter drift.

CAUTION:

Carefully press in the relief valve by aligning its mounting hole side with the axle center so as not to
cause deformation.

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level and the engine coolant level and add engine oil and engine coolant. Refer to

CO-33, "Inspection"

 and 

LU-25, "Inspection"

.

2.

Start the engine, and check there is no leaks of engine oil or engine coolant.

3.

Stop the engine and wait for 15 minutes.

4.

Check the engine oil level and the engine coolant level again. Refer to 

CO-33, "Inspection"

 and 

LU-25,

"Inspection"

.

: Engine front

JPBIA2309ZZ

OIL PUMP

LU-31

< UNIT DISASSEMBLY AND ASSEMBLY >

[VK50VE]

C

D

E

F

G

H

I

J

K

L

M

A

LU

N

P

O

UNIT DISASSEMBLY AND ASSEMBLY

OIL PUMP

Exploded View

INFOID:0000000005245092

Disassembly and Assembly

INFOID:0000000005245093

DISASSEMBLY

1.

Remove oil pan (lower) and oil strainer. Refer to 

EM-188, "Exploded View"

.

2.

Remove oil pan (upper). Refer to 

EM-208, "Exploded View"

.

3.

Remove front cover. Refer to 

EM-212, "Exploded View"

.

4.

Remove oil pump drive chain.
• Instruction for oil pump drive chain. Refer to 

EM-213, "Disassembly and Assembly"

.

5.

Remove oil pump.

CAUTION:

Never disassembly oil pump.

ASSEMBLY

Assembly is the reverse order of disassembly.

Inspection

INFOID:0000000005245094

INSPECTION AFTER INSTALLATION

1.

Check the engine oil level. Refer to 

LU-25, "Inspection"

.

2.

Start the engine, and check there is no leakage of engine oil.

3.

Stop the engine and wait for 15 minutes.

1.

Oil pump drive chain

2.

Oil pump sprocket (oil pump side)

3.

Oil strainer

4.

Gasket

5.

Oil pump

Refer to 

GI-4, "Components"

 for symbols in the figure.

JPBIA2310GB

LU-32

< UNIT DISASSEMBLY AND ASSEMBLY >

[VK50VE]

OIL PUMP

4.

Check the engine oil level and adjust the level. Refer to 

LU-25, "Inspection"

.