Content .. 680 681 682 683 ..

Infiniti QX56 (JA60). Manual - part 682

ENGINE MAINTENANCE

MA-21

< ON-VEHICLE MAINTENANCE >

• If the engine oil is milky, it is highly probable that it is contaminated with engine coolant. Repair the broken

parts.

OIL LEAKAGE

Check for oil leakage around the following areas:

• Oil pan

• 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 engine oil may be hot.

• Put the selector lever in the Park “P” position.
1. Check the engine oil level. Refer to

MA-20, "ENGINE OIL : Inspection"

2. Remove engine front undercover using power tool.
3. Disconnect the oil pressure switch harness connector.
4. Remove the oil pressure switch (A).

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.

Engine oil pressure [Engine oil temperature at 80

°C (175°F)]

Unit: kPa (kg/cm

2, psi)

CAUTION:

If the difference is extreme, check the oil passages and oil pump for leaks and blockages.

WBIA0791E

Tool number

: ST25051001 (J-25695-1)
: ST25052000 (J-25695-2)

WBIA0571E

Engine Speed

Approximate Discharge Oil Pressure

Idle speed

More than 98 (1.0, 14)

2,000 rpm

More than 294 (3.0, 43)

MA-22

< ON-VEHICLE MAINTENANCE >

ENGINE MAINTENANCE

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-15, "Recommended Chemical Prod-

ucts and Sealants"

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

ENGINE OIL : Changing Engine Oil

INFOID:0000000005403141

WARNING:

• Be careful not to burn yourself, as the engine oil is hot.

• Prolonged and repeated contact with used engine oil may

cause skin cancer. Try to avoid direct skin contact with used

engine oil. If skin contact is made, wash thoroughly with soap

or hand cleaner as soon as possible.

1. Remove engine front undercover using power tool.
2. Warm up engine, and check for oil leakage from engine compo-

nents. Refer to

MA-20, "ENGINE OIL : Inspection"

3. Stop engine and wait for 10 minutes.
4. Loosen oil filler cap, then remove drain plug.
5. Drain engine oil.
6. Install drain plug with new washer.

CAUTION:

• Be sure to clean drain plug and install with new washer.

7. Refill with new engine oil. Refer to

MA-13, "Fluids and Lubricants"

Engine oil capacity (Approximate):
Unit: (US qt, Imp qt)

CAUTION:

• The refill capacity depends on the engine oil temperature and drain time. Use these specifica-

tions for reference only.

• Always use the oil level gauge to determine when the proper amount of engine oil is in the

engine.

8. Warm up engine and check area around drain plug and oil filter for oil leakage.
9. Stop engine and wait for 10 minutes.
10. Check engine oil level. Refer to

MA-20, "ENGINE OIL : Inspection"

OIL FILTER
OIL FILTER : Removal and Installation

INFOID:0000000005403142

REMOVAL

Oil pressure switch torque

: 14.8 N·m (1.5 kg-m, 11 ft-lb)

Oil pan drain plug

: 34.3 N·m (3.5 kg-m, 25 ft-lb)

KBIA2498E

Drain and refill

With oil filter change

6.5 (6 7/8, 5-3/4)

Without oil filter change

6.2 (6-1/2, 5-1/2)

Dry engine (engine overhaul)

7.6 (8, 6-3/4)

ENGINE MAINTENANCE

MA-23

< ON-VEHICLE MAINTENANCE >

1. Drain the engine oil. Refer to

MA-22, "ENGINE OIL : Changing

Engine Oil"

2. Remove the oil filter using Tool.

WARNING:

• Be careful not to get burned when the engine and engine

oil are hot.

CAUTION:

• The oil filter is provided with a relief valve.

• Use Genuine NISSAN oil filter or equivalent.

• When removing, prepare a shop cloth to absorb any engine oil leakage or spillage.

• 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 installation surface.
2. Apply engine oil to the oil seal circumference of the new oil filter.

3. Screw the oil filter manually until it touches the installation sur-

face, then tighten it by 2/3 turn. Or tighten to specification.

4. Refill the engine with new engine oil. Refer to

MA-22, "ENGINE

OIL : Changing Engine Oil"

5. Inspect the engine for oil leakage. Follow the "INSPECTION

AFTER INSTALLATION" procedure.

INSPECTION AFTER INSTALLATION

1. Check the engine oil level. Refer to

MA-20, "ENGINE OIL : Inspection"

2. Start the engine and check for engine oil leakage.
3. Stop the engine and wait for 10 minutes.
4. Check the engine oil level and add engine oil as required.

SPARK PLUG

Tool number

: KV10115801 (J-38956)

WBIA0388E

SMA010

Oil filter

: 17.7 N·m (1.8 kg-m, 13 ft-lb)

SMA229B

MA-24

< ON-VEHICLE MAINTENANCE >

ENGINE MAINTENANCE

SPARK PLUG : Exploded View

INFOID:0000000005403143

SPARK PLUG : Removal and Installation

INFOID:0000000005403144

REMOVAL

1. Disconnect the harness connector from the ignition coil.
2. Remove ignition coil.

CAUTION:

Do not shock ignition coil.

3. Remove spark plug using suitable tool.

INSPECTION AFTER REMOVAL

• Do not use a wire brush for cleaning.

• If plug tip is covered with carbon, spark plug cleaner may be used.

Ignition coil

Spark plug

WBIA0796E

SEM294A

Cleaner air pressure:

Less than 588 kPa (5.9 bar, 6 kg/cm

, 85 psi)

Cleaning time:

Less than 20 seconds

SMA773C

Content .. 680 681 682 683 ..