Infiniti QX56 (Z62). Manual — part 923
ENGINE MAINTENANCE
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SPARK PLUG : Removal and Installation
INFOID:0000000006394839
REMOVAL
1.
Remove engine cover. Refer to
.
2.
Remove ignition coil. Refer to
.
3.
Remove spark plug with a spark plug wrench (commercial ser-
vice tool).
INSTALLATION
Note the following item, installa is the reverse order of removal.
CAUTION:
Install ignition coil marked with an identification mark (A) on
cylinder No. 5, 6, 7 and 8.
SPARK PLUG : Inspection
INFOID:0000000006394840
INSPECTION AFTER REMOVAL
Use the standard type spark plug for normal condition.
CAUTION:
• Never drop or impact spark plug.
• Never use a wire brush for cleaning.
• If plug tip is covered with carbon, use spark plug cleaner to
clean.
• Measure spark plug gap. When it exceeds the limit, replace spark plug even if it is within the speci-
fied replacement mileage. Refer to
a
: 14 mm (0.55 in)
JPBIA0030ZZ
: Engine front
JPBIA3471ZZ
Spark plug (Standard type)
: Refer to
Cleaner air pressure
: Less than 588 kPa (5.9 bar, 6 kg/cm
2
, 85 psi)
Cleaning time
: Less than 20 seconds
SMA773C
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ENGINE MAINTENANCE
• Spark plug gap adjustment is not required between replace-
ment intervals.
EVAP VAPOR LINES
EVAP VAPOR LINES : Inspection
INFOID:0000000006220923
1.
Visually inspect EVAP vapor lines for improper attachment and for cracks, damage, loose connections,
chafing and deterioration.
2.
Inspect fuel tank filler cap vacuum relief valve for clogging, sticking, etc.
Refer to
.
JPBIA0031ZZ
CHASSIS MAINTENANCE
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CHASSIS MAINTENANCE
EXHAUST SYSTEM
EXHAUST SYSTEM : Inspection
INFOID:0000000006220926
Check exhaust pipes, muffler and mounting for improper attachment,
leakage, cracks, damage or deterioration.
• If damage is found, repair or replace damaged parts.
A/T FLUID
A/T FLUID : Inspection
INFOID:0000000006376364
FLUID LEAKAGE
• Check transaxle surrounding area (oil seal and plug etc.) for fluid
leakage.
• If anything is found, repair or replace damaged parts and adjust A/
T fluid level. Refer to
.
TRANSFER FLUID
TRANSFER FLUID : Inspection
INFOID:0000000006394468
FLUID LEAKAGE
Check transfer surrounding area (oil seal, drain plug, and filler plug etc.) for fluid leakage.
FLUID LEVEL
1.
Remove filler plug (1) and gasket. Then check that fluid is filled
up from mounting hole for the filler plug.
CAUTION:
Never start engine while checking fluid level.
2.
Set a new gasket onto filler plug (1), and install it on transfer and
then tighten to the specified torque.
CAUTION:
Never reuse gasket.
TRANSFER FLUID : Draining
INFOID:0000000006394469
1.
Run the vehicle to warm up the transfer unit sufficiently.
2.
Stop the engine.
SMA211A
JSDIA1912ZZ
Specified torque
: 33 N·m (3.4 kg-m, 24 ft-lb)
JPDIE0295ZZ
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CHASSIS MAINTENANCE
3.
Remove the drain plug (1) and drain transfer fluid.
4.
Set a new gasket onto drain plug (1), and install it to transfer and
tighten to the specified torque.
CAUTION:
Never reuse gasket.
TRANSFER FLUID : Refilling
INFOID:0000000006394470
1.
Remove filler plug (1). Fill up with new transfer fluid up to mount-
ing hole for the filler plug.
CAUTION:
Carefully fill the fluid. (Fill up for approximately 3 minutes.)
2.
Leave the vehicle for 3 minutes, and check the fluid level again.
3.
Set a new gasket onto filler plug, and install it on transfer and
tighten to the specified torque.
CAUTION:
Never reuse gasket.
4.
Perform learning of transfer fluid viscosity. Refer to
FRONT PROPELLER SHAFT: 2F P15
FRONT PROPELLER SHAFT: 2F P15 : Inspection
INFOID:0000000006220930
NOISE
Check the propeller shaft tube surface for dents or cracks. If damaged, replace propeller shaft assembly.
VIBRATION
If vibration is present at high speed, inspect propeller shaft runout
first.
1.
With a dial indicator, measure propeller shaft runout at runout
measuring points by rotating final drive companion flange with
hands.
2.
If runout still exceeds specifications, separate propeller shaft at
final drive companion flange; then rotate companion flange 90, 180, 270 degrees and install propeller
shaft.
3.
Check runout again. If runout still exceeds specifications, replace propeller shaft assembly.
4.
Check the vibration by driving vehicle.
RUNOUT MEASURING POINT
Specified torque
: 33 N-m (3.4 kg-m, 24 ft-lb)
JPDIE0245ZZ
Fluid grade and Viscosity
.
Fluid capacity
Specified torque
: 33 N-m (3.4 kg-m, 24 ft-lb)
JPDIE0295ZZ
: Vehicle front
Propeller shaft runout
: Refer to
.
LDIA0160E
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