Nissan Frontier D40. Instruction — part 824

LUBRICATION SYSTEM

LU-7

< FUNCTION DIAGNOSIS >

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LU

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FUNCTION DIAGNOSIS

LUBRICATION SYSTEM

Lubrication Circuit

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PBIC3004E

LU-8

< FUNCTION DIAGNOSIS >

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LUBRICATION SYSTEM

System Chart

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WBIA0636E

ENGINE OIL

LU-9

< ON-VEHICLE MAINTENANCE >

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D

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LU

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ON-VEHICLE MAINTENANCE

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.

ENGINE 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.

ENGINE OIL LEAKAGE

Check for engine oil leakage around the following area.
• Oil pan
• Oil pan drain plug
• Oil pressure switch
• Oil filter
• Oil cooler
• Intake valve timing control cover and intake valve timing control solenoid valve
• Front cover
• Mating surface between cylinder block and lower cylinder block
• Mating surface between cylinder block and cylinder head
• Mating surface between cylinder head and rocker cover
• Crankshaft oil seals (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 (A/T models) or Neutral position (M/T models), and

apply parking brake securely.

1.

Check engine oil level. Refer to

LU-9, "Inspection"

.

2.

Remove engine under cover. Refer to

EXT-13, "Removal and Installation"

.

3.

Disconnect the oil pressure switch harness connector.

4.

Remove oil pressure switch using a suitable tool. Refer to

EM-78, "Exploded View"

.

CAUTION:

Do not drop or shock oil pressure switch.

PBIC2823E

LU-10

< ON-VEHICLE MAINTENANCE >

[QR25DE]

ENGINE OIL

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-15, "Standard and Limit"

.

CAUTION:

• If the difference is extreme, check the oil passages and oil pump for leaks and blockages.
• It is impossible to replace or adjust oil pump because oil pump is manufactured with balancer

unit. If any malfunction is found on oil pump, replace balancer unit as an assembly.

8.

After the inspections, install oil pressure switch as follows:

a.

Remove old liquid gasket adhering to oil pressure switch and the 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.

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 new 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 any oil leaks.

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-32, "Exploded

View"

.

PBIC3006E

Oil grade and viscosity

: Refer to

MA-16, "For North America: Fluids and

Lubricants"

.

Oil capacity

: Refer to

LU-15, "Standard and Limit"

.