Nissan Pathfinder (2007 year). Manual - part 241

CAMSHAFT

EM-85

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EM

2007 Pathfinder

b.

Use feeler gauge, measure the clearance between valve lifter
and camshaft.

Valve clearance:

Unit: mm (in)

*: Approximately 80

°

C (176

°

F)

●

By referring to the figure, measure the valve clearances at
locations marked “

×

” as shown (locations indicated in the fig-

ure) with feeler gauge.

●

No. 1 cylinder at compression TDC

c.

Rotate crankshaft by 240

°

 clockwise (when viewed from engine

front) to align No. 3 cylinder at TDC of its compression stroke.

NOTE:
Crankshaft pulley bolt flange has a stamped line every 60

°

. They

can be used as a guide to rotation angle.

SEM139D

Cold

Hot * (reference data)

Intake

0.26 - 0.34 (0.010 - 0.013)

0.304 - 0.416 (0.012 - 0.016)

Exhaust

0.29 - 0.37 (0.011 - 0.015)

0.308 - 0.432 (0.012 - 0.017)

Measuring position (right bank)

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 1 cylinder at 

compression TDC

EXH

×

INT

×

Measuring position (left bank)

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 1 cylinder at 

compression TDC

INT

×

 

EXH

×

 

PBIC2054E

PBIC2916E

EM-86

CAMSHAFT

2007 Pathfinder

●

By referring to the figure, measure the valve clearances at
locations marked “

×

” as shown in the table below (locations

indicated in the figure) with feeler gauge.

●

No. 3 cylinder at compression TDC

d.

Rotate crankshaft by 240

°

 clockwise (when viewed from engine

front) to align No. 5 cylinder at TDC of compression stroke. 

●

By referring to the figure, measure the valve clearances at
locations marked “

×

” as shown in the table below (locations

indicated in the figure) with feeler gauge.

●

No. 5 cylinder at compression TDC

Measuring position (right bank)

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 3 cylinder at 

compression TDC

EXH

×

INT

×

Measuring position (left bank)

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 3 cylinder at 

compression TDC

INT

×

 

EXH

 

×

PBIC2055E

PBIC2916E

Measuring position (right bank)

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 5 cylinder at 

compression TDC

EXH

×

INT

×

Measuring position (left bank)

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 5 cylinder at 

compression TDC

INT

×

 

EXH

 

×

PBIC2056E

CAMSHAFT

EM-87

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2007 Pathfinder

3.

For the measured value out of the standard, perform adjustment. Refer to 

EM-87, "ADJUSTMENT"

 .

ADJUSTMENT

●

Perform adjustment depending on selected head thickness of valve lifter.

1.

Measure the valve clearance. Refer to 

EM-84, "INSPECTION"

 .

2.

Remove camshaft. Refer to 

EM-76, "REMOVAL"

 .

3.

Remove valve lifters at the locations that are out of the standard.

4.

Measure the center thickness of removed valve lifters with
micrometer.

5.

Use the equation below to calculate valve lifter thickness for replacement.

●

Thickness of new valve lifter can be identified by stamp marks
on the reverse side (inside the cylinder).

Intake

Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory). Refer to 

EM-136, "Available Valve Lifter"

 .

KBIA0057E

Valve lifter thickness calculation:

t = t

1

 + (C

1

 – C

2

 )

t

= Valve lifter thickness to be replaced

t

1

= Removed valve lifter thickness

C

1

= Measured valve clearance

C

2

= Standard valve clearance:

Intake

: 0.30 mm (0.012 in)*

Exhaust

: 0.33 mm (0.013 in)*

*: Approximately 20

°

C (68

°

F)

KBIA0119E

Stamp mark

Thickness

788U

7.88 mm (0.3102 in)

790U

7.90 mm (0.3110 in)

·

·

·

·

840U

8.40 mm (0.3307 in)

EM-88

CAMSHAFT

2007 Pathfinder

Exhaust

Available thickness of valve lifter: 25 sizes with range 7.88 to 8.36 mm (0.3102 to 0.3291 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory). Refer to 

EM-136, "Available Valve Lifter"

 .

CAUTION:

Install identification letter at the end and top, “U” and “N”, at each of proper positions. (Be care-
ful of mis-installation between intake and exhaust.)

6.

Install selected valve lifter.

7.

Install camshaft. Refer to 

EM-80, "INSTALLATION"

 .

8.

Manually turn crankshaft pulley a few turns. 

9.

Make sure that the valve clearances for cold engine are within the specifications by referring to the speci-
fied values.

10. Installation of the remaining components is in the reverse order of removal.

11. Start the engine, and check for unusual noise and vibration.

Stamp mark

Thickness

N788

7.88 mm (0.3102 in)

N790

7.90 mm (0.3110 in)

·

·

·

·

N836

8.36 mm (0.3291 in)

OIL SEAL

EM-89

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EM

2007 Pathfinder

OIL SEAL

PFP:00100

Removal and Installation of Valve Oil Seal

EBS00QC2

REMOVAL

1.

Turn crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent valve from dropping
into cylinder.

2.

Remove camshaft relating to valve oil seal to be removed. Refer to 

EM-76, "REMOVAL"

 .

3.

Remove valve lifters. Refer to 

EM-76, "REMOVAL"

 .

4.

Remove valve collet, valve spring retainer and valve spring
using Tool.

CAUTION:

When working, take care not to damage valve lifter holes.

●

Compress valve spring using Tool attachment, adapter.
Remove valve collet with magnet hand.

5.

Remove valve oil seal using Tool.

INSTALLATION

1.

Apply new engine oil to new valve oil seal joint surface and seal lip.

2.

Press in valve oil seal to height "H" using Tool to specified
height.

NOTE:
Dimension "H": height measured before valve spring seat instal-
lation.

3.

Installation of the remaining components is in the reverse order
of removal.

Tool numbers

: KV10116200 (J-26336-B)

: KV10115900 (J-26336-20)

: KV10109220 (

—

)

WBIA0578E

Tool number

: KV10107902 (J-38959)

WBIA0489E

Tool number

: 

—

(J-39386)

Intake and exhaust

: 14.3 - 14.9 mm (0.563 - 0.587 in)

WBIA0490E

EM-90

OIL SEAL

2007 Pathfinder

Removal and Installation of Front Oil Seal

EBS00QC3

REMOVAL

1.

Remove engine undercover using power tools.

2.

Remove drive belts. Refer to 

EM-14, "Removal"

 .

3.

Remove engine cooling fan assembly. Refer to 

CO-17, "ENGINE COOLING FAN"

 .

4.

Remove crankshaft pulley. Refer to 

EM-56, "REMOVAL"

 .

5.

Remove front oil seal using suitable tool.

CAUTION:

Be careful not to damage front timing chain case and crank-
shaft.

INSTALLATION

1.

Apply new engine oil to both oil seal lip and dust seal lip of new front oil seal.

2.

Install front oil seal.

●

Install front oil seal so that each seal lip is oriented as shown.

●

Press-fit until the height of front oil seal is level with the
mounting surface using suitable tool.

–

Suitable drift: outer diameter 60 mm (2.36 in), inner diameter
50 mm (1.97 in).

CAUTION:

●

Be careful not to damage front timing chain case and
crankshaft.

●

Press-fit straight and avoid causing burrs or tilting oil
seal.

3.

Installation is in the reverse order of removal after this step.

PBIC2931E

SEM715A

PBIC2931E

OIL SEAL

EM-91

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2007 Pathfinder

Removal and Installation of Rear Oil Seal

EBS00QC4

REMOVAL

1.

Remove transmission assembly. Refer to 

AT-240, "TRANSMISSION ASSEMBLY"

 .

2.

Remove rear oil seal with a suitable tool.

CAUTION:

Be careful not to damage crankshaft and cylinder block.

INSTALLATION

1.

Apply new engine oil to new rear oil seal joint surface and seal lip.

2.

Install rear oil seal so that each seal lip is oriented as shown.

●

Press in rear oil seal to the position as shown.

●

Install new rear oil seal using Tool.

CAUTION:

●

Be careful not to damage crankshaft and cylinder
block.

●

Press-fit oil seal straight to avoid causing burrs or tilt-
ing.

●

Do not touch grease applied onto oil seal lip.

3.

Installation of the remaining components is in the reverse order of removal.

PBIC2932E

SEM715A

SBIA0281E

Tool number

: KV991J0120 (J-47128)

LBIA0454E

EM-92

CYLINDER HEAD

2007 Pathfinder

CYLINDER HEAD

PFP:11041

On-Vehicle Service

EBS00QC5

CHECKING COMPRESSION PRESSURE

1.

Warm up engine thoroughly. Then, stop it.

2.

Release fuel pressure. Refer to 

EC-79, "FUEL PRESSURE RELEASE"

 .

3.

Disconnect fuel pump fuse to avoid fuel injection during mea-
surement.

4.

Remove intake manifold collector. Refer to 

EM-18, "REMOVAL"

 .

5.

Remove spark plug from each cylinder. Refer to 

EM-33, "REMOVAL"

 .

6.

Connect engine tachometer (not required in use of CONSULT-ll).

7.

Install compression tester with adapter onto spark plug hole.

●

Use compression gauge whose picking up end inserted to
spark plug hole is smaller than 20 mm (0.79 in) in diameter.
Otherwise, it may be caught by cylinder head during removal.

8.

Turn ignition switch to “START” for cranking. When the gauge pointer stabilizes, read the compression
pressure and engine rpm. Perform these steps to check each cylinder.

Compression pressure:

Unit: kPa (kg/cm

2

 , psi) /rpm

CAUTION:

Always use a fully changed battery to obtain specified engine speed.

●

If the engine speed is out of specified range, check battery liquid for proper gravity. Check engine
speed again with normal battery gravity. 

BBIA0534E

PBIC0900E

SBIA0533E

Standard

Minimum

Differential limit between cylinders

 1,275 (13.0, 185) / 300

981 (10.0, 142) / 300

98 (1.0, 14) / 300