Infiniti FX35, FX50 (S51). Manual - part 977

EM-208

< UNIT DISASSEMBLY AND ASSEMBLY >

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OIL PAN (UPPER)

OIL PAN (UPPER)

Exploded View

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1.

Oil level gauge

2.

Oil level gauge guide

3.

O-ring

4.

Oil cooler

5.

Connector bolt

6.

Oil filter

7.

Drain plug washer

8.

Oil pan (lower)

9.

Oil strainer

10. Gasket

11.

Oil temperature sensor

12. Oil pressure switch

13. O-ring

14. Axle pipe

15. O-ring

16. Rear plate cover

17. Crankshaft position sensor (POS)

18. O-ring

19. O-ring

20. Baffle plate

21. Baffle plate

A.

Refer to 

LU-29

B.

Refer to 

LU-28

C.

Oil pump side

: Oil pan side

Refer to 

GI-4, "Components"

 for symbols in the figure.

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OIL PAN (UPPER)

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Disassembly and Assembly

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DISASSEMBLY

WARNING:

To avoid the danger of being scalded, never drain engine oil when engine is hot.

1.

Remove oil filter. Refer to 

LU-28, "Removal and Installation"

.

2.

Remove oil cooler. Refer to 

LU-29, "Exploded View"

.

3.

Remove A/C compressor and A/C compressor bracket. Refer to 

HA-94, "Exploded View"

 and 

EM-212,

"Exploded View"

.

4.

Remove oil level gauge and oil level gauge guide.

5.

Remove oil pressure switch and oil temperature sensor if necessary.

6.

Remove rear plate cover.

7.

Remove oil pan (lower). Refer to

EM-188, "Exploded View"

.

8.

Remove oil strainer. Refer to 

EM-188, "Exploded View"

.

9.

Remove oil pan (upper) as per the following:

a.

Loosen mounting bolts in the reverse order as shown in the fig-
ure with power tool to remove.

NOTE:
Disregard No. 12, 17 when loosening.

b.

Insert a suitable tool into the notch at oil pan (upper) (1) as
shown.
• Pry off case by moving a suitable tool.

CAUTION:

Be careful not to damage the mating surfaces.

10. Remove O-ring from bottom of cylinder block and oil pump.

11. Remove baffle plate, if necessary.
12. Remove axle pipe from oil pan (upper), if necessary.

• Pull axle pipe from oil pan (upper) using a suitable drift.

ASSEMBLY

1.

Install axle pipe (1) to oil pan (upper), if removed.

• Lubricate O-ring groove of axle pipe, O-ring, and O-ring joint of

oil pan with new engine oil. 

• Install axle pipe to oil pan (upper) from drive shaft (LH) side. 

CAUTION:

Insert it with care to prevent O-ring from sliding.

: Engine front

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: Engine front

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2

: O-ring

3

: O-ring (with identification paint)

A

: Front final drive side

B

: Drive shaft (LH) side

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EM-210

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OIL PAN (UPPER)

2.

Install oil pan (upper) as per the following:

a.

Use a scraper (A) to remove old liquid gasket from mating sur-
faces.
• Also remove the old liquid gasket from mating surface of cylin-

der block.

• Remove old liquid gasket from the bolt holes and threads.

CAUTION:

Never scratch or damage the mating surfaces when clean-
ing off old liquid gasket.

b.

Install new O-rings on the bottom of cylinder block and oil pump.

c.

Apply a continuous bead of liquid gasket with tube presser
(commercial service tool) to the cylinder block mating surfaces
of oil pan (upper) to a limited portion as shown in the figure.

Use Genuine RTV Silicone Sealant or an equivalent. Refer
to 

GI-16, "Recommended Chemical Products and Sealants"

.

CAUTION:

Attaching must be done within 5 minutes after coating.

d.

Tighten mounting bolts in numerical order as shown in the fig-
ure.

CAUTION:

Install avoiding misalignment of O-rings.
NOTE:
Tighten mounting bolts No. 1 and 2 in two steps. The numerical
order No. 12 and 17 shown second steps.
• There are three types of mounting bolts. Refer to the following

for locating bolts.

e.

Tighten transmission joint bolts.

f.

Install rear plate cover.

3.

Install oil strainer.

4.

Install oil pan (lower). Refer to 

EM-189, "Removal and Installation"

.

5.

Install in the reverse order of removal.
NOTE:
At least 30 minutes after oil pan is installed, pour engine oil.

Inspection

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INSPECTION AFTER DISASSEMBLY

Clean oil strainer if any object is attached.

INSPECTION AFTER ASSEMBLY

1.

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

LU-25, "Inspection"

.

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a

: 5.5 - 7.5 mm (0.217 - 0.295 in)

b

: 

φ

4.0 - 5.0 mm (0.157 - 0.197 in)

: Engine front

: Engine front

M6 

×

 30 mm. (1.18 in)

: 18, 19

M8 

×

 100 mm (3.94 in)

: 3, 4, 5, 7, 10, 11, 14, 15

M8 

×

 45 mm (1.77 in)

: Except the above

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OIL PAN (UPPER)

EM-211

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2.

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

3.

Stop engine and wait for 15 minutes.

4.

Check the engine oil level again. Refer to 

LU-25, "Inspection"

.