Nissan Pathfinder (2011 year). Manual — part 363
DRIVE BELTS
EM-15
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2. Rotate the drive belt auto tensioner in the direction of arrow
(loosening direction of tensioner) as shown, using suitable tool.
WARNING:
Avoid placing hand in a location where pinching may occur
if the tool accidentally comes off.
3. Remove the drive belt.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Make sure belt is securely installed around all pulleys.
Drive Belt Auto Tensioner and Idler Pulley
INFOID:0000000006246993
REMOVAL
1. Remove the engine room cover. Refer to
EM-25, "Removal and Installation"
2. Remove air duct and resonator assembly. Refer to
EM-26, "Removal and Installation"
3. Remove drive belt. Refer to
EM-14, "Removal and Installation"
.
4. Remove drive belt auto tensioner and idler pulley.
INSTALLATION
Installation is in the reverse order of removal.
LBIA0428E
1.
Idler pulley
2.
Drive belt auto tensioner
AWBIA0861GB
2011 Pathfinder
EM-16
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AIR CLEANER FILTER
AIR CLEANER FILTER
Exploded View
INFOID:0000000006246994
Removal and Installation
INFOID:0000000006246995
REMOVAL
1. Disconnect air duct and resonator from the air cleaner case (upper).
2. Disconnect MAF/IAT sensor.
3. Unhook clips, and lift air cleaner case (upper).
4. Remove air cleaner filter.
INSTALLATION
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
Front
AWBIA0133GB
2011 Pathfinder
SPARK PLUG
EM-17
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SPARK PLUG
Exploded View
INFOID:0000000006246996
Removal and Installation
INFOID:0000000006246997
REMOVAL
1. Remove ignition coil. Refer to
EM-42, "Removal and Installation"
.
2. Remove 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
PBIC2901E
SEM294A
SMA773C
2011 Pathfinder
EM-18
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SPARK PLUG
• Checking and adjusting spark 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.
*: Always check with the Parts Department for the latest parts information.
Cleaner air pressure
: Less than 588 kPa (6 kg/cm
2
, 85 psi)
Cleaning time
: Less than 20 seconds
SMA806CA
Application
United States and Canada
Mexico
Make
NGK
Standard type*
DILFR5A-11
PLFR5A-11
Gap (nominal)
1.1 mm (0.043 in)
2011 Pathfinder
CAMSHAFT VALVE CLEARANCE
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CAMSHAFT VALVE CLEARANCE
Valve Clearance
INFOID:0000000006246998
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. Remove the engine room cover. Refer to
EM-25, "Removal and Installation"
2. Remove the air cleaner and air duct assembly. Refer to
3. Remove rocker covers (RH and LH banks). Refer to
EM-43, "Removal and Installation"
.
4. Measure the valve clearance as follows:
a. Set No. 1 cylinder at TDC of its compression stroke.
• Rotate crankshaft pulley clockwise to align timing mark (A)
(grooved line without color) with timing indicator (B).
• Make sure that intake and exhaust cam noses on No. 1 cylin-
der (engine front side of RH bank) are located as shown.
• If not, rotate crankshaft one revolution (360
°
) and align as
shown.
b. Measure the clearance between valve lifter and camshaft, using
feeler gauge.
Valve Clearance
Unit: mm (in)
1
: Approximately 20
°
C (68
°
F)
AWBIA0719ZZ
SEM418G
SEM139D
Cold
1
(reference data)
Hot
2
(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)
2011 Pathfinder
EM-20
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CAMSHAFT VALVE CLEARANCE
2
: Approximately 80
°
C (176
°
F)
• Measure the valve clearances at locations marked (
×
) as
shown in the table below (locations indicated in the illustration)
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.
• Measure the valve clearances at locations marked (
×
) as
shown in the table below (locations indicated in the illustration)
with feeler gauge.
• No. 3 cylinder at compression TDC
Measuring position (RH bank)
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 1 cylinder at
compression TDC
EXH
×
INT
×
Measuring position (LH bank)
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 1 cylinder at
compression TDC
INT
×
EXH
×
PBIC2054E
PBIC2916E
Measuring position (RH bank)
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 3 cylinder at
compression TDC
EXH
×
INT
×
Measuring position (LH bank)
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 3 cylinder at
compression TDC
INT
×
EXH
×
PBIC2055E
2011 Pathfinder
CAMSHAFT VALVE CLEARANCE
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d. Rotate crankshaft by 240
°
clockwise (when viewed from engine
front) to align No. 5 cylinder at TDC of compression stroke.
• Measure the valve clearances at locations marked (
×
) as
shown in the table below (locations indicated in the illustration)
with feeler gauge.
• No. 5 cylinder at compression TDC
5. For the measured value out of the standard, perform adjustment.
ADJUSTMENT
• Perform adjustment depending on selected head thickness of valve lifter.
1. Measure the valve clearance.
2. Remove camshaft. Refer to
EM-78, "Removal and Installation"
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.
PBIC2916E
Measuring position (RH bank)
No. 1 CYL.
No. 3 CYL.
No. 5 CYL.
No. 5 cylinder at
compression TDC
EXH
×
INT
×
Measuring position (LH bank)
No. 2 CYL.
No. 4 CYL.
No. 6 CYL.
No. 5 cylinder at
compression TDC
INT
×
EXH
×
PBIC2056E
KBIA0057E
2011 Pathfinder
EM-22
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CAMSHAFT VALVE CLEARANCE
• 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
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
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-78, "Removal and 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.
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
: 0.26 - 0.34 mm (0.010 - 0.013 in)*
Exhaust
: 0.29 - 0.37 mm (0.011 - 0.015 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)
Stamp mark
Thickness
N788
7.88 mm (0.3102 in)
N790
7.90 mm (0.3110 in)
·
·
·
·
N836
8.36 mm (0.3291 in)
2011 Pathfinder
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