Nissan Pathfinder (2010 year). Instruction — part 384
EM-200
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[VK56DE]
OIL SEAL
OIL SEAL
Removal and Installation of Valve Oil Seal
INFOID:0000000005260525
REMOVAL
1. Remove the camshaft relating to the valve oil seal to be removed. Refer to
.
2. Remove the valve lifters. Refer to
• Correctly identify the location where each part is removed from. Keep parts organized to avoid mixing
them up.
3. Turn the crankshaft until the cylinder requiring new oil seals is at TDC. This will prevent the valve from
dropping into the cylinder.
4. Remove the valve collet using Tool.
CAUTION:
Do not damage the valve lifter holes.
5. Remove the valve spring retainer and valve spring.
CAUTION:
Do not remove the valve spring seat from the valve spring.
6. Remove the valve oil seal using Tool.
INSTALLATION
Installation is in the reverse order of removal.
• Install the valve oil seal using Tool.
• Apply new engine oil on the new valve oil seal joint and seal lip.
• Install the valve oil seal to the specified height "H".
Removal and Installation of Front Oil Seal
INFOID:0000000005260526
REMOVAL
1. Remove the drive belt. Refer to
EM-149, "Removal and Installation"
.
2. Remove the radiator assembly. Refer to
CO-44, "Removal and Installation"
.
3. Remove the cooling fan (crankshaft driven type). Refer to
CO-48, "Removal and Installation (Crankshaft
Tool number
: KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)
: KV10109220 ( — )
WBIA0578E
Tool number
: KV10107902 (J-38959)
WBIA0478E
Tool number
: KV10115600 (J-38958)
Height "H" (without valve spring installed)
Intake and exhaust
: 14.300 - 14.900 mm (0.5630 -
0.5870 in)
WBIA0490E
2010 Pathfinder
OIL SEAL
EM-201
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[VK56DE]
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4. Remove drive plate cover.
5. Lock crankshaft using Tool (A).
6. Match mark crankshaft pulley bolt flange and crankshaft pulley for installation.
7. Remove the crankshaft pulley.
a. Remove the crankshaft pulley from the crankshaft using suitable
tool.
• Set the bolts in the two bolt holes [M6 x 1.0 mm (0.04 in)] on
the front surface.
NOTE:
The dimension between the centers of the two bolt holes is 61
mm (2.40 in).
8. Remove the front oil seal using suitable tool.
CAUTION:
Do not damage front cover and oil pump drive spacer.
INSTALLATION
1. Apply new engine oil to both the oil seal lip and dust seal lip of the new front oil seal.
2. Install the front oil seal.
• Install the front oil seal so that each seal lip is oriented as
shown.
Tool number
: — (J-47245)
LBIA0455E
KBIA2477E
SBIA0359E
SEM715A
2010 Pathfinder
EM-202
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[VK56DE]
OIL SEAL
• Press-fit until the front oil seal is level with the front cover
using suitable tool.
CAUTION:
• Do not damage front timing chain case and crankshaft.
• Press-fit straight and avoid causing burrs or tilting of the
oil seal.
3. Tighten the crankshaft pulley bolt.
• Perform the following steps for angular tightening:
a. Apply engine oil onto the threaded parts of the bolt and seating area.
b. Select the one most visible notch of the four on the bolt flange.
Corresponding to the selected notch, put a alignment mark
(such as paint) on the crankshaft pulley.
4. Remove Tool (A).
5. Installation of the remaining components is in the reverse order of removal.
Removal and Installation of Rear Oil Seal
INFOID:0000000005260527
REMOVAL
1. Remove the transmission assembly. Refer to
TM-195, "4WD : Removal and Installation"
.
2. Before removing the drive plate, put a match mark (A) on the
crankshaft and drive plate for alignment during installation.
3. Remove the drive plate.
SBIA0359E
Crankshaft pulley bolt torque
Step 1
: 93.1 N·m (9.5 kg-m, 69 ft-lb)
Step 2
: additional 90
°
(angle tightening)
KBIA2519E
Tool number
: — (J-47245)
LBIA0455E
ALBIA0522ZZ
2010 Pathfinder
OIL SEAL
EM-203
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• Holding the crankshaft pulley bolt, lock the crankshaft to
remove the drive plate bolts.
• Remove drive plate bolts diagonally.
CAUTION:
• Do not damage the drive plate. Especially, avoid deform-
ing and damaging the signal plate teeth (circumference
position).
• Keep magnetic materials away from signal plate.
• Place the drive plate with the signal plate surface facing
upward.
4. Remove the rear oil seal using suitable tool.
CAUTION:
Do not damage crankshaft or oil seal retainer surface.
INSTALLATION
1. Apply new engine oil to both the oil seal lip and dust seal lip of the new rear oil seal.
2. Install the rear oil seal.
• Install the rear oil seal so that each seal lip is oriented as
shown.
• Press-fit the rear oil seal using suitable tool.
CAUTION:
• Do not damage the crankshaft or oil seal retainer.
• Press-fit the oil seal straight to avoid causing burrs or
tilting.
• Do not touch grease applied onto the oil seal lip.
• Do not damage or scratch the outer circumference of
the rear oil seal.
• Tap until flush with the front edge of the oil seal retainer.
3. Installation of the remaining components is in the reverse order of removal. Refer to
,
TM-195, "4WD : Removal and Installation"
CAUTION:
• When replacing an engine or transmission you must make sure the dowels are installed cor-
rectly during re-assembly.
• Improper alignment caused by missing dowels may cause vibration, oil leaks or breakage of
drivetrain components.
KBIA2491E
WBIA0437E
SEM715A
WBIA0438E
2010 Pathfinder
EM-204
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[VK56DE]
CYLINDER HEAD
CYLINDER HEAD
Exploded View
INFOID:0000000005260528
Removal and Installation
INFOID:0000000005260529
REMOVAL
1. Remove the crankshaft pulley, front cover, oil pump, and timing chain. Refer to
.
2. Remove the following components and related parts:
• Fuel tube and fuel injector assembly. Refer to
EM-176, "Removal and Installation"
.
• Intake manifold. Refer to
EM-162, "Removal and Installation"
• Starter. Refer to
STR-24, "Removal and Installation"
• Knock sensors. Refer to
.
3. Remove the camshaft sprockets and camshafts. Refer to
EM-189, "Removal and Installation"
.
4. Remove the cylinder head bolts in reverse of order shown.
5. Remove the cylinder heads.
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Diameter
1.
Harness bracket
2.
Engine coolant temperature sensor
3.
Washer
4.
Cylinder head gasket (LH)
5.
Cylinder head (RH)
6.
Cylinder head bolt
7.
Cylinder head gasket (RH)
8.
Cylinder head (LH)
KBIA2528E
PBIC0068E
2010 Pathfinder
CYLINDER HEAD
EM-205
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• Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between (d1) and (d2)
exceeds the limit, replace the bolt with a new one.
• If reduction of diameter appears in a position other than (d2), use it
as (d2) point.
INSTALLATION
1. Install a new cylinder head gasket.
2. Install the cylinder head. Follow the steps below to tighten the
bolts in the numerical order shown.
CAUTION:
• If cylinder head bolts are re-used, check their diameters
before installation. Follow the "Cylinder Head Bolts Diam-
eter" procedure.
a. Apply engine oil to threads and seating surface of the bolts.
b. Measure the tightening angle using Tool.
CAUTION:
Measure the tightening angle using Tool. Do not measure
visually.
3. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
• Before starting the engine, check oil/fluid levels including engine coolant and engine oil. If the levels are
lower than required quantity, fill to the specified level. Refer to
.
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to the fuel piping, check for fuel
leakage at the connection points.
• Start engine. With engine speed increased, check again for fuel leakage at connection points.
• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gas, or any oil/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
Limit (d1 - d2)
: 0.23 mm (0.0091 in)
KBIA0189E
PBIC0068E
Step a : 44.1 N·m (4.5 kg-m, 33 ft-lb)
Step b : 70
°
clockwise
Step c : Loosen in the reverse order of tightening
Step d : 44.1 N·m (4.5 kg-m, 33 ft-lb)
Step e : 60
°
clockwise
Step f
: 60
°
clockwise
Tool number
: KV10112100 (BT-8653-A)
WBIA0603E
2010 Pathfinder
EM-206
< ON-VEHICLE REPAIR >
[VK56DE]
CYLINDER HEAD
• After cooling down the engine, again check oil/fluid levels including engine oil and engine coolant. Refill to
specified level if necessary.
• Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Exploded View
INFOID:0000000005260530
Disassembly and Assembly
INFOID:0000000005260531
DISASSEMBLY
1. Remove the spark plug. Refer to
EM-152, "Removal and Installation"
2. Remove the valve lifter.
• Identify the installation positions, and store them without mixing them up.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
1.
Spark plug
2.
Valve lifter
3.
Valve collet
4.
Valve spring retainer
5.
Valve spring
6.
Valve spring seat
7.
Valve oil seal
8.
Valve guide
9.
Valve seat
10.
Valve (INT)
11. Valve (EXH)
12.
Cylinder head (LH bank)
13.
Spark plug tube
14. Cylinder head (RH bank)
WBIA0470E
2010 Pathfinder
CYLINDER HEAD
EM-207
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3. Remove the valve collet using Tool.
CAUTION:
When working, take care not to damage valve lifter holes.
4. Remove the valve spring retainer, valve spring and valve spring
seat.
5. Inspect the valve guide clearance. Refer to
6. Push the valve stem to the combustion chamber side, and remove the valve.
• Identify the installation positions, and store them without mixing them up.
7. Remove the valve oil seal using Tool.
8. Replace the valve seat if necessary. Refer to
EM-208, "Inspection After Disassembly"
9. Replace the valve guide if necessary. Refer to
EM-208, "Inspection After Disassembly"
.
10. Remove the spark plug tube, if necessary.
• Remove the spark plug tube out of the cylinder head using suitable tool.
CAUTION:
• Do not damage the cylinder head.
• Do not remove the spark plug tube unless absolutely necessary. Once removed, the spark plug
tube will be deformed and cannot be reused.
ASSEMBLY
1. Install the valve guide if necessary. Refer to
EM-208, "Inspection After Disassembly"
2. Install the valve seat if necessary. Refer to
EM-208, "Inspection After Disassembly"
3. Install the valve oil seal using Tool.
• Apply new engine oil on the new valve oil seal joint and seal
lip.
• Install the valve oil seal to the specified height "H".
4. Install the valves in their original position.
5. Install the valve spring seats.
Tool number
: KV10116200 (J-26336-B)
: KV10115900 (J-26336-20)
: KV10109220 ( — )
Tool number
: KV10107902 (J-38959)
WBIA0578E
WBIA0478E
Tool number
: KV10115600 (J-38958)
Height "H" (without valve spring installed)
Intake and exhaust
: 14.300 - 14.900 mm (0.5630 -
0.5870 in)
WBIA0490E
2010 Pathfinder
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