Nissan Pathfinder (2008 year). Manual - part 374

AIR CLEANER FILTER

EM-155

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AIR CLEANER FILTER

Removal and Installation

INFOID:0000000001468877

REMOVAL

NOTE:
• The viscous paper type filter does not need cleaning between replacement intervals.
• Replace the air filter as necessary for periodic maintenance. Refer to 

MA-6, "Introduction of Periodic Mainte-

nance"

.

1.

Unhook clips, and lift air cleaner case (upper).

2.

Remove the air cleaner filter.

INSTALLATION

1.

Installation is in the reverse order of removal.

1.

Air cleaner case (lower)

2.

Air cleaner filter

3.

Air cleaner case (upper)

4.

Air duct and resonator assembly

⇐

Front

ALBIA0413GB

EM-156

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SPARK PLUG

SPARK PLUG

Removal and Installation

INFOID:0000000001282023

REMOVAL

1.

Remove the ignition coil. Refer to 

EM-177, "Removal and Installation"

.

2.

Remove the spark plug using suitable tool.

CAUTION:

Do not drop or shock it.

INSPECTION AFTER REMOVAL

• Do not use a wire brush for cleaning.

• If the spark plug tip is covered with carbon, a spark plug cleaner may be used.

1.

Ignition coil

2.

Spark plug

WBIA0796E

SEM294A

SMA773C

SPARK PLUG

EM-157

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• Checking and adjusting plug gap is not required between change

intervals.

INSTALLATION

Installation is in the reverse order of removal.

CAUTION:

Do not drop or shock spark plug.

Cleaner air pressure

: Less than 588 kPa (5.9 bar, 6 kg/cm

2

, 85 psi)

Cleaning time

: Less than 20 seconds

SMA806CA

Make

NGK

Standard type

DILFR5A-11

Gap (Nominal)

1.1 mm (0.043 in)

EM-158

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CAMSHAFT VALVE CLEARANCE

CAMSHAFT VALVE CLEARANCE

Valve Clearance

INFOID:0000000001282029

INSPECTION

NOTE:
Perform the following inspection after removal, installation or replacement of camshaft or valve-related parts,
or if there are unusual engine conditions due to changes in valve clearance over time (starting, idling, and/or
noise).
1.

Warm up the engine. Then stop the engine.

2.

Remove the RH bank and LH bank rocker covers using power tool. Refer to 

EM-178, "Removal and

Installation"

.

3.

Turn the crankshaft pulley in the normal direction (clockwise
when viewed from engine front) to align TDC identification notch
(without paint mark) with timing indicator.

4.

At this time, make sure both the intake and exhaust cam noses
of No. 1 cylinder (top front on LH bank) face outside.
• If they do not face outside, turn crankshaft pulley once more.

KBIA2476E

KBIA0400J

CAMSHAFT VALVE CLEARANCE

EM-159

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5.

Measure valve clearances at the locations marked “

×

” as shown

in the table below (locations indicated with black arrow).
•

⇐

: Engine front

•

⇐

 (black): Measurable at No.1 cylinder compression top dead

center

•

⇐

 (white): Measurable at No. 3 cylinder compression top dead

center

• A:  RH
• B:  LH 
• C: Exhaust
• D: Intake
NOTE:
Firing order 1-8-7-3-6-5-4-2
• No. 1 cylinder compression TDC

• Measure valve clearance using suitable tool. 

CAUTION:

If the inspection was carried out with a cold engine, make
sure the values with a fully warmed up engine are still
within specifications.

6.

Turn the crankshaft pulley clockwise 270

°

 from the position of No. 1 cylinder compression TDC to obtain

No. 3 cylinder compression TDC.

Measuring position (RH bank)

No. 2 cyl 

(E)

No. 4 cyl 

(F)

No. 6 cyl 

(G)

No. 8 cyl 

(H)

No. 1 cylinder at TDC

 EXH

 

×

INT

×

×

 

Measuring position (LH bank)

No. 1 cyl 

(J)

No. 3 cyl 

(K)

No. 5 cyl 

(L)

No. 7 cyl 

(M)

No. 1 cylinder at TDC

INT

×

×

 

EXH

×

×

WBIA0713E

KBIA0185E

EM-160

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CAMSHAFT VALVE CLEARANCE

7.

Measure valve clearances at the locations marked “

×

” as shown

in the table below (locations indicated with white arrow).
•

⇐

: Engine front

•

⇐

 (black): Measurable at No.1 cylinder compression top dead

center

•

⇐

 (white): Measurable at No. 3 cylinder compression top dead

center

• A:  RH
• B:  LH 
• C: Exhaust
• D:  Intake
NOTE:
Firing order 1-8-7-2-3-6-5-4-2
• No. 3 cylinder compression TDC

• Measure valve clearance using suitable tool. 

CAUTION:

If the inspection was carried out with a cold engine, make
sure the values with a fully warmed up engine are still
within specifications.

Measuring position (RH bank)

No. 2 cyl 

(E)

No. 4 cyl 

(F)

No. 6 cyl 

(G)

No. 8 cyl 

(H)

No. 3 cylinder at TDC

 EXH

 

×

INT

 

×

Measuring position (LH bank)

No. 1 cyl 

(J)

No. 3 cyl 

(K)

No. 5 cyl 

(L)

No. 7 cyl 

(M)

No. 3 cylinder at TDC

INT

×

×

 

EXH

×

×

WBIA0713E

KBIA0185E

CAMSHAFT VALVE CLEARANCE

EM-161

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8.

Turn the crankshaft pulley clockwise 90

°

 from the position of No.

3 cylinder compression TDC (clockwise by 360

°

 from the posi-

tion of No. 1 cylinder compression TDC) to measure the intake
and exhaust valve clearances of No. 6 cylinder and the exhaust
valve clearance of No. 2 cylinder.

9.

If out of specifications, adjust as necessary. 

ADJUSTMENT

NOTE:
• Perform adjustment depending on the selected head thickness of the valve lifter.
• The specified valve lifter thickness is the dimension at normal temperatures. Ignore dimensional differences

caused by temperature. Use the specifications for hot engine condition to adjust.

1.

Remove the camshaft. Refer to 

EM-193, "Removal and Installation"

.

2.

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

3.

Measure the center thickness of the removed valve lifters using
suitable tool.

4.

Use the equation below to calculate the valve lifter thickness for
replacement.
• Valve lifter thickness calculation:

Thickness of replacement valve lifter = t1+ (C1 - C2)
t1 = Thickness of removed valve lifter
C1 = Measured valve clearance
C2= Standard valve clearance:

• Thickness of a new valve lifter can be identified by stamp

marks on the reverse side (inside the cylinder).
Stamp mark N788 indicates 7.88 mm (0.3102 in) in thickness.

• 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-248, "Standard

and Limit"

.

5.

Install the selected valve lifter.

WBIA0713E

KBIA0057E

KBIA0119E

EM-162

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CAMSHAFT VALVE CLEARANCE

6.

Install the camshaft.

7.

Manually turn the crankshaft pulley a few turns.

8.

Make sure the valve clearances for a cold engine are within specifications by referring to the specified val-
ues.

9.

After completing the repair, check the valve clearances again with the specifications for a warmed engine.
Make sure the values are within specifications. Follow the "Valve Clearance" procedure.