Nissan Frontier D40. Manual - part 839

ENGINE MAINTENANCE (VQ40DE)

MA-37

< ON-VEHICLE MAINTENANCE >

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2.

Fill the radiator and the reservoir tank (to the “MAX” line), with water. Reinstall the radiator cap and leave
the vented reservoir cap off.

3.

Run the engine until it reaches normal operating temperature.

4.

Press the engine accelerator two or three times under no-load.

5.

Stop the engine and wait until it cools down.

6.

Drain the water from the engine cooling system. Refer to 

MA-34, "ENGINE COOLANT : Changing Engine

Coolant"

.

7.

Repeat steps 2 through 6 until clear water begins to drain from the radiator.

FUEL LINES

FUEL LINES : Checking Fuel Line

INFOID:0000000005272753

Inspect the fuel lines and fuel tank for improper mounting, leaks,
cracks, damage, loose connections, chafing, or deterioration.
As necessary, repair or replace any faulty parts.

FUEL FILTER

FUEL FILTER : Changing Fuel Filter

INFOID:0000000005272754

The fuel filter is part of the fuel level sensor unit, fuel filter and fuel pump assembly. Refer to 

FL-10, "Removal

and Installation"

.

WARNING:

Before replacing the fuel filter, release the fuel pressure from the fuel system. Refer to 

EC-954, "Fuel

Pressure Check"

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AIR CLEANER FILTER

AIR CLEANER FILTER : Exploded View

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SMA803A

1.

Air cleaner case (lower)

2.

Air cleaner filter

3.

Air cleaner case (upper)

4.

Air duct and resonator

Front

AWBIA0133GB

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ENGINE MAINTENANCE (VQ40DE)

AIR CLEANER FILTER : Removal and Installation

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REMOVAL

1.

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

2.

Remove air cleaner filter.

INSTALLATION

Installation is in the reverse order of removal.

ENGINE OIL

ENGINE OIL : Inspection

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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-16, "For North America: Fluids and Lubricants"

.

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
• Water pump cover
• Chain tensioner cover
• Intake valve timing control cover and intake valve timing control solenoid valve
• Mating surface between cylinder block and cylinder head
• Mating surface between lower cylinder block and cylinder block
• Mating surface between cylinder head and rocker cover
• Mating surface between front timing chain case and rear timing chain case
• Mating surface between rear timing chain case and cylinder head
• Mating surface between rear timing chain case and cylinder block
• Mating surface between rear timing chain case and lower cylinder block
• Mating surface between rear timing chain case and oil pan (upper)
• Crankshaft oil seals (front and rear)
• Oil level gauge guide
• Camshaft position sensor (PHASE)

OIL PRESSURE CHECK

WARNING:

• Be careful not to burn yourself, as the engine and engine oil may be hot.
• Put the selector lever in the Park (P) position (A/T models) or Neutral position (M/T models), and

apply parking brake securely.

1.

Check engine oil level. Refer to 

MA-38, "ENGINE OIL : Inspection"

.

2.

Remove engine undercover. Refer to 

EXT-13, "Removal and Installation"

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PBIC2823E

ENGINE MAINTENANCE (VQ40DE)

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3.

Disconnect the oil pressure switch (B) harness connector.
• A: Oil pan (upper)
•

⇒

: Front

4.

Remove the oil pressure switch (B).

CAUTION:

Do not drop or shock oil pressure switch.

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 

LU-30, "Standard and Limit"

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CAUTION:

If the difference 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-22, "Recommended Chemical Prod-

ucts and Sealants"

.

c.

After warming up engine, make sure there is no leakage of engine oil with running engine.

ENGINE OIL : Changing Engine Oil

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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 any 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.

5.

Refill the engine with new specified engine oil.

WBIA0813E

Tool numbers

: 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-149, "Removal and Installation"

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Oil grade and viscosity

: Refer to 

MA-16

  (North America), 

MA-18

 (Mexico).

Oil capacity

: Refer to 

MA-16

  (North America), 

MA-18

 (Mexico).

MA-40

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ENGINE MAINTENANCE (VQ40DE)

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 any oil leaks.

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 

MA-38, "ENGINE

OIL : Inspection"

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CAUTION:

Do not overfill the engine with oil.

OIL FILTER

OIL FILTER : Removal and Installation

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REMOVAL

1.

Remove the engine front undercover. Refer to 

EXT-13, "Removal and Installation"

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2.

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:

• Oil filter is equipped with a pressure relief valve. 
• Use Genuine NISSAN Oil Filter or equivalent.
• When removing, prepare a shop cloth to absorb any

engine oil leaks or spills.

• Do not allow engine oil to adhere to 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 oil filter seal circumference of the
new oil filter as shown.

PBIC2823E

Tool number

: KV10115801 (J-38956)

LBIA0425E

SMA010