service INFINITI QX56 2007 Factory Service Manual

EM-20
< SERVICE INFORMATION >
INTAKE MANIFOLD
5. Install the quick connector cap on the quick connector joint (onengine side only).
6. Install the fuel hose and tube to hose clamps.
7. Refill the engine coolant. Refer to CO-9, "
Changing Engine
Coolant".
INSPECTION AFTER INSTALLATION
• After installing fuel tubes, make sure there is no fuel leakage at connections in the following steps.
- Apply fuel pressure to fuel lines by turning i gnition switch ON (with engine stopped). Then check for fuel
leaks at connections.
- Start the engine and rev it up and check for fuel leaks at the connections.
• Perform procedures for throttle valve closed position learning after finishing repairs. Refer to EC-77, "
Throt-
tle Valve Closed Position Learning".
• If electric throttle control actuator is replaced, perform procedures for idle air volume learning” after finishing
repairs. Refer to EC-78, "
Idle Air Volume Learning".
SBIA0354E

EM-24
< SERVICE INFORMATION >
OIL PAN AND OIL STRAINER
OIL PAN AND OIL STRAINER
Removal and InstallationINFOID:0000000003531528
REMOVAL
WARNING:
To avoid the danger of being scalded, never drain the engine oil when the engine is hot.
1. Remove the engine. Refer to EM-74, "
Removal and Installation".
2. Remove the oil pan (lower) using the following steps.
a. Remove the oil pan (lower) bolts using power tool.
1. Oil pan (upper) 2. O-ring 3. O-ring
4. O-ring 5. O-ring (with collar) 6. Oil level gauge guide
7. Oil level gauge 8. O-ring 9. Connector bolt
10. Oil filter 11. Oil cooler 12. Relief valve
13. Oil pressure switch 14. Gasket 15. Drain plug
16. Oil pan (lower) 17. Oil strainer
KBIA2465E
KBIA2466E

OIL PAN AND OIL STRAINEREM-25
< SERVICE INFORMATION >
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b. Insert Tool between the lower oil pan and the upper oil pan.
CAUTION:
• Be careful not to damage the mating surface.
• Do not insert a screwdriver, this will damage the matingsurfaces.
c. Slide (1) the Tool by tapping (2) its side with a hammer to remove the lower oil pan from the upper oil pan.
3. Remove the oil strainer from the oil pan (upper).
4. Remove the oil pan (upper) using the following steps.
a. Remove the oil pan (upper) bolts a shown.
b. Remove the oil pan (upper) from the cylinder block by prying it at the points shown, using suitable tool.
CAUTION:
Do not damage mating surface.
5. Remove the O-rings from the oil pump and front cover. NOTE:
Do not reuse O-rings.
INSPECTION AFTER REMOVAL
Clean the oil strainer.
INSTALLATION
Tool number : KV10111100 (J-37228)
WBIA0566E
KBIA2467E
KBIA2468E
KBIA2469E

EM-26
< SERVICE INFORMATION >
OIL PAN AND OIL STRAINER
1. Install the oil pan (upper) using the following steps.
a. Apply liquid gasket thoroughly as shown.Use Genuine RTV Silicone Sealant or equivalent. Refer to GI-
45, "Recommended Chemical Product and Sealant".
CAUTION:
Apply liquid gasket to outside of bolt hole for the hole
shown by .
b. Install new O-rings to the oil pump and front cover side.
c. Tighten the bolts in numerical order as shown.
2. Install the oil strainer to the oil pan (upper).
3. Install the oil pan (lower).
a. Apply liquid gasket thoroughly as shown. Use Genuine RTV Silicone Seal ant or equivalent. Refer to
GI-45, "
Recommended Chemical Product and Sealant"
b. Tighten the oil pan (lower) bolts in numerical order as shown.
KBIA2470E
KBIA2469E
M6 × 30 mm (1.18 in) : No. 15, 16
M8 × 25 mm (0.98in) : No. 1, 3, 5, 7, 11, 13
M8 × 45 mm (1.77 in) : No. 2, 4, 6, 8, 10, 14
M8 × 123 mm (4.84in) : No. 9, 12
PBIC2553E
KBIA2471E
PBIC2595E

OIL PAN AND OIL STRAINEREM-27
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4. Install the oil pan drain plug.
5. Install engine assembly. Refer to
EM-74, "
Removal and Installation".
• Do not fill the engine oil for at least 30 minutes after oil pan is installed.
INSPECTION AFTER INSTALLATION
1. Check engine oil level and add engine oil if necessary. Refer to LU-8, "Inspection".
2. Start the engine, and check for leaks of engine oil.
3. Stop engine and wait for 10 minutes.
4. Check engine oil level again.

EM-28
< SERVICE INFORMATION >
IGNITION COIL
IGNITION COIL
Removal and InstallationINFOID:0000000003531529
REMOVAL
1. Remove the engine room cover using power tool. Refer to EM-12, "Removal and Installation".
2. Disconnect the harness connector from the ignition coil.
3. Remove the ignition coil. CAUTION:
Do not shock ig nition coil.
INSTALLATION
Installation is in the reverse order of removal.
1. Ignition coil 2. Spark plug
WBIA0796E

SPARK PLUGEM-29
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SPARK PLUG
Removal and InstallationINFOID:0000000003531530
REMOVAL
1. Remove the ignition coil. Refer to
EM-28, "Removal and Installation".
2. Remove the spark plug using suitable tool.
INSPECTION AFTER REMOVAL
• Do not use a wire brush for cleaning.
• If the spark plug tip is covered with carbon, a spark plug cleaner may be used.
1. Ignition coil 2. Spark plug
WBIA0796E
SEM294A
SMA773C
Cleaner air pressure : Less than 588 kPa (5.9 bar, 6 kg/cm2, 85 psi)
Cleaning time : Less than 20 seconds

EM-30
< SERVICE INFORMATION >
SPARK PLUG
• Checking and adjusting plug gap is not required between changeintervals.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
Do not drop or shock spark plug.
SMA806CA
Make NGK
Standard type DIFR5A-11
Gap (Nominal) : 1.1 mm (0.043 in)

FUEL INJECTOR AND FUEL TUBEEM-31
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FUEL INJECTOR AND FUEL TUBE
Removal and InstallationINFOID:0000000003531531
CAUTION:
Do not remove or disassemble parts unless instructed as shown.
REMOVAL
1. Remove the engine room cover using power tool. Refer to
EM-12, "Removal and Installation".
2. Release the fuel pressure. Refer to EC-80, "
Fuel Pressure Check".
3. Disconnect the negative battery terminal.
4. Disconnect the fuel injector harness connectors.
5. Disconnect the fuel hose assembly from the fuel tubes (RH and LH).
CAUTION:
• While hoses are disconnected, plug th em to prevent fuel from draining.
• Do not separate the fuel connector and fuel hose.
6. Remove the fuel injectors with the fuel tube assembly.
1. Fuel tube (RH) 2. Cap 3. Fuel damper
4. O-ring 5. O-ring (b lue) 6. Fuel injector
7. Clip 8. O-ring (brown) 9. O-ring
10. Fuel hose assembly 11. Fuel tube (LH)
KBIA2472E

EM-32
< SERVICE INFORMATION >
FUEL INJECTOR AND FUEL TUBE
7. Remove the fuel injector from the fuel tube using the followingsteps.
a. Spread open and remove the clip.
b. Remove the fuel injector from the fuel tube by pulling straight out.
CAUTION:
• Be careful with remaining fuel that may leak out from fueltube.
• Do not damage injector nozzles during removal.
• Do not bump or drop fuel injectors.
• Do not disassemble fuel injectors.
8. Remove the fuel damper from each fuel tube.
INSTALLATION
1. Install the fuel damper to each fuel tube using the following steps.
a. Apply engine oil to the new O-ring and set it into the cup of the fuel tube.
CAUTION:
• Handle O-ring with bare hands. Never wear gloves.
• Lubricate new O-ring with new engine oil.
• Do not clean O-ring with solvent.
• Make sure that O-ring and its mating part are free of for-eign material.
• When installing O-ring, do not scratch it with tool or fin-
gernails.
• Do not twist or stretch the O-ring.
b. Make sure that the backup spacer is in the O-ring connecting surface of the fuel damper.
NOTE:
The backup spacer is part of the fuel damper assembly.
c. Insert the fuel damper until it seats on the fuel tube. CAUTION:
• Insert straight, making sure that the axis is lined up.
• Do not pressure-fit with excessive force.
d. Install the cap, and then tighten the bolts evenly. • After tightening the bolts, make sure that there is no gap between the cap and fuel tube.
2. Install new O-rings to the fuel injector paying attention to the items below. CAUTION:
• Upper and lower O-rings are different colors.
• Handle O-ring with bare hands. Never wear gloves.
KBIA2506E
Reference value :130 N (13.3 kg, 29.2 lb)
Fuel tube side : Blue
Nozzle side : Brown
KBIA2473E