Nissan Pathfinder (2012 year). Manual — part 461
LU-26
< PERIODIC MAINTENANCE >
[VK56DE]
ENGINE OIL
PERIODIC MAINTENANCE
ENGINE OIL
Inspection
INFOID:0000000007357890
OIL LEVEL
• Before starting the engine make sure the vehicle is parked on a flat
and level surface, then check the oil level. If the engine is already
running, turn it off and allow 10 minutes before checking.
• Pull out oil level gauge and wipe clean.
• Insert oil level gauge.
• Check that the oil level is within the low (L) and high (H) range as
indicated on the dipstick.
• If the engine oil level is out of range, add oil as necessary. Refer to
MA-18, "FOR USA AND CANADA : Fluids and Lubricants"
(United
States and Canada) or
MA-20, "FOR MEXICO : Fluids and Lubri-
CAUTION:
Do not overfill the engine with oil.
OIL APPEARANCE
• Check the engine oil for a white milky appearance or excessive contamination.
• If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair or replace
damaged parts.
OIL LEAKAGE
Check for oil leakage around the following areas:
• Oil pans (lower and upper)
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Oil cooler
• Intake valve timing control cover
• Intake valve timing control solenoid valve
• Front cover
• Mating surface between cylinder block and cylinder head
• Mating surface between cylinder head and rocker cover
• Crankshaft oil seal (front and rear)
OIL PRESSURE CHECK
WARNING:
• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Put the A/T shift selector in the Park (P) position.
1. Check the engine oil level. Refer to
.
2. Remove engine under cover using power tool. Refer to
EXT-15, "Removal and Installation"
3. Disconnect the oil pressure switch (A) harness connector.
4. Remove the oil pressure switch (A) using suitable tool.
CAUTION:
Do not drop or shock oil pressure switch.
SMA954C
WBIA0791E
August 2012
2012 Pathfinder
ENGINE OIL
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5. Install Tools.
6. Start the engine and warm it up to normal operating temperature.
7. Check the engine oil pressure with engine running under no-load. Refer to
CAUTION:
If the difference between the test results and the specification is extreme, check the oil passages
and oil pump for leaks and blockages.
8. After the inspections, install oil pressure switch as follows:
a. Remove old liquid gasket adhering to oil pressure switch and engine.
b. Apply liquid gasket and tighten oil pressure switch to the specification.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-14, "Recommended Chemical Prod-
.
c. After warming up engine, ensure there are no engine oil leaks.
Changing Engine Oil
INFOID:0000000007357891
WARNING:
• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Prolonged and repeated contact with used engine oil may cause skin cancer; try to avoid direct skin
contact with used oil. If skin contact is made, wash thoroughly with soap or hand cleaner as soon as
possible.
1. Warm up the engine, and check for oil leaks.
2. Stop the engine and wait for at least 10 minutes.
3. Remove the oil drain plug and oil filler cap to drain the old oil.
4. Install a new washer on the oil drain plug, then install the oil drain plug in the oil pan.
CAUTION:
• Clean the drain plug and install with a new washer.
• Do not reuse copper sealing washer.
5. Refill the engine with new specified engine oil.
CAUTION:
The refill capacity depends on the oil temperature and drain time. Use the “Refill oil capacity” val-
ues as a reference and check the oil level using the dipstick when filling the engine with oil.
6. Warm up the engine and check the area around the drain plug and oil filter for oil leaks. Repair as neces-
sary.
Tool number
: ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)
WBIA0571E
Oil pressure switch torque
: 14.7 N·m (1.5 kg-m, 11 ft-lb)
Oil drain plug
: Refer to
EM-172, "Removal and Installation"
Oil grade and viscosity
: Refer to
MA-18, "FOR USA AND CANADA : Flu-
CANADA : SAE Viscosity Number"
States and Canada) or
(Mexico).
Oil capacity
: Refer to
.
August 2012
2012 Pathfinder
LU-28
< PERIODIC MAINTENANCE >
[VK56DE]
ENGINE OIL
7. Stop the engine and wait for more than 10 minutes.
8. Check the oil level using the dipstick as shown. Add oil as nec-
essary and install the oil filler cap. Refer to
.
CAUTION:
Do not overfill the engine with oil.
9. Install engine under cover. Refer to
.
SMA954C
August 2012
2012 Pathfinder
OIL FILTER
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OIL FILTER
Removal and Installation
INFOID:0000000007357892
REMOVAL
1. Remove the engine under cover access cover.
2. Drain engine oil. Refer to
3. Remove the oil filter using Tool as shown.
WARNING:
Be careful not to burn yourself, as the engine and engine oil
may be hot.
CAUTION:
• The oil filter is equipped with a pressure relief valve.
• Use Genuine NISSAN oil filter or equivalent.
• When removing, position a shop cloth to absorb any
engine oil leaks or spills.
• Do not allow engine oil to adhere to the drive belts.
• Completely wipe off any engine oil that adheres to the engine and the vehicle.
INSTALLATION
1. Remove foreign materials adhering to the oil filter seal mating surface.
2. Apply clean engine oil to the new oil filter as shown.
3. Screw on the oil filter manually until it touches the installation
surface, then tighten it by 2/3 turn as shown. Or tighten to speci-
fication.
4. Refill engine with new engine oil. Refer to
5. Inspect the engine for oil leaks. Repair as necessary.
6. Install the engine under cover access cover.
INSPECTION AFTER INSTALLATION
1. Check the engine oil level. Refer to
2. Start the engine and check for engine oil leaks. Repair as necessary
3. Stop the engine and wait for 10 minutes.
4. Check the engine oil level and add engine oil as required.
Tool number
: KV10115801 (J-38956)
WBIA0388E
SMA010
Oil filter
: 17.7 N·m (1.8 kg-m, 13 ft-lb)
SMA229B
August 2012
2012 Pathfinder
LU-30
< REMOVAL AND INSTALLATION >
[VK56DE]
OIL COOLER
REMOVAL AND INSTALLATION
OIL COOLER
Exploded View
INFOID:0000000007357893
Removal and Installation
INFOID:0000000007357894
WARNING:
Be careful not to burn yourself, as the engine oil and engine coolant may be hot.
CAUTION:
• Do not spill engine coolant on the drive belt.
• Do not spill engine oil on rubber parts such as drive belts and engine mounting insulator.
NOTE:
When removing components such as hoses, tubes/lines, etc., cap or plug openings to prevent fluid from spill-
ing.
REMOVAL
1. Drain engine coolant from radiator and cylinder block. Refer to
CO-42, "Changing Engine Coolant"
and
EM-228, "Disassembly and Assembly"
2. Remove engine front under cover using suitable tool. Refer to
EXT-15, "Removal and Installation"
3. Disconnect water hoses from oil cooler.
CAUTION:
Perform this step when engine is cold.
4. Remove oil filter. Refer to
LU-29, "Removal and Installation"
5. Remove connector bolt, oil cooler, and O-ring.
CAUTION:
WBIA0790E
1.
Oil pan
2.
Water hose
3.
Water pipe
4.
Water hose
5.
Connector bolt
6.
Oil filter
7.
Oil cooler
8.
O-ring
9.
Relief valve
10. Water hose
11. Connector pipe
12. Gasket
A.
To thermostat housing
B.
Refer to
C.
To cylinder block
August 2012
2012 Pathfinder
OIL COOLER
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Do not reuse O-ring.
INSPECTION AFTER REMOVAL
Oil Cooler
Check oil cooler for cracks. Check oil cooler for clogging by blowing compressed air through engine coolant
inlet. If necessary, replace oil cooler assembly.
Relief Valve
Check relief valve for movement, cracks and breaks by pushing the ball. If necessary, replace relief valve.
INSTALLATION
Installation is in the reverse order of removal, paying attention to the following.
• If replacement of the relief valve is necessary, install the new relief valve in place by tapping it in using suit-
able tool.
CAUTION:
Do not reuse relief valve.
• Confirm that no foreign objects are adhering to the sealing sur-
faces of the oil cooler and oil pan (upper).
• Tighten connector bolt after aligning cutout on oil cooler with pro-
trusion on oil pan (upper) side.
CAUTION:
Do not reuse O-ring.
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-18, "FOR USA AND CANADA : Fluids and Lubricants"
(United
States and Canada) or
MA-20, "FOR MEXICO : Fluids and Lubricants"
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at 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 oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
KBIA2500E
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission/
transaxle fluid
A/T and CVT Models
Leakage
Level/Leakage
Leakage
M/T Models
Level/Leakage
Leakage
Level/Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
August 2012
2012 Pathfinder
LU-32
< REMOVAL AND INSTALLATION >
[VK56DE]
OIL PUMP
OIL PUMP
Exploded View
INFOID:0000000007357895
Removal and Installation
INFOID:0000000007357896
REMOVAL
1. Remove the timing chain cover. Refer to
EM-188, "Removal and Installation"
.
2. Remove the front final drive assembly (Model M205). Refer to
DLN-391, "Removal and Installation"
.
3. Remove the oil pump drive spacer.
4. Remove the oil pump assembly.
INSTALLATION
Installation is in the reverse order of removal, paying attention to the following.
• When installing, align crankshaft flat faces with inner rotor flat faces.
INSPECTION AFTER INSTALLATION
• Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
MA-18, "FOR USA AND CANADA : Fluids and Lubricants"
(United
States and Canada) or
MA-20, "FOR MEXICO : Fluids and Lubricants"
(Mexico).
• Use procedure below to check for fuel leakage.
• Turn ignition switch ON (with engine stopped). With fuel pressure applied to fuel piping, check for fuel leak-
age at 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:
WBIA0415E
1.
Oil pump body
2.
Outer rotor
3.
Inner rotor
4.
Oil pump cover
5.
Oil pump drive spacer
6.
Regulator valve
7.
Regulator spring
8.
Regulator plug
KBIA2512E
August 2012
2012 Pathfinder
OIL PUMP
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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 oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc.
Item
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission/
transaxle fluid
A/T and CVT Models
Leakage
Level/Leakage
Leakage
M/T Models
Level/Leakage
Leakage
Level/Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gas
—
Leakage
—
August 2012
2012 Pathfinder
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