2011 INFINITI QX56 Factory Service Manual

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Page 2569 of 5598

INFINITI QX56 2011 Factory Service Manual
PREPARATIONEM-7
< PREPARATION >
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000006289518
Tool number
(Kent-Moore No.)
Tool name
Description
KV10116200
(J-263

Page 2570 of 5598

INFINITI QX56 2011 Factory Service Manual
EM-8
< PREPARATION >
PREPARATION
KV10114400
(J-38365)
Heated oxygen sensor wrenchLoosening or tightening heated oxygen sen-
sor 2
a: 22 mm (0.87 in)
KV10117100
(J-44626)
Heated oxygen sensor wrench L

Page 2571 of 5598

INFINITI QX56 2011 Factory Service Manual
PREPARATIONEM-9
< PREPARATION >
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Commercial Service ToolINFOID:0000000006289519
KV101197S0
(—)
Injector seal drift set
Installing fuel injector seal ring
EG15050500
(J

Page 2572 of 5598

INFINITI QX56 2011 Factory Service Manual
EM-10
< PREPARATION >
PREPARATION
(—)
Pilot bushing pullerRemoving pilot converter
(—)
Valve seat cutter set Finishing valve seat (EXH) dimensions
(—)
Piston ring expander Removing and installi

Page 2573 of 5598

INFINITI QX56 2011 Factory Service Manual
PREPARATIONEM-11
< PREPARATION >
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(—)
Feeler gauge
Inspection valve clearance (use a curved-tip
gauge)
(—)
Compression gauge with flexible type
adapter Checking co

Page 2574 of 5598

INFINITI QX56 2011 Factory Service Manual
EM-12
< BASIC INSPECTION >
CAMSHAFT VALVE CLEARANCE
BASIC INSPECTION
CAMSHAFT VALVE CLEARANCE
InspectionINFOID:0000000006289520
INSPECTION
Check valve clearance if applicable to the following cases:

EM-12
< BASIC INSPECTION >
CAMSHAFT VALVE CLEARANCE
BASIC INSPECTION
CAMSHAFT VALVE CLEARANCE
InspectionINFOID:0000000006289520
INSPECTION
Check valve clearance if applicable to the following cases:
Intake side:
At the removal and installation of VVEL ladder assembly or valve-related parts, or at the occurrence of mal-
function (poor starting, idle malfunction, unusual noise) due to aged deterioration in valve clearance.
CAUTION:
Valve clearance check on the intake side is not required after replacing the VVEL ladder assembly &
cylinder head assembly with a new one. (Install new VVEL ladder assembly & cylinder head assembly
in factory-shipped condition because it is factory-adjusted and inspected.)
NOTE:
VVEL ladder assembly cannot be replaced as a singl e part, because it is machined together with cylinder
head assembly.
Exhaust side: At the removal, installation, and replacement of exhaus t camshaft or valve-related parts, or at the occur-
rence of malfunction (poor starting, idle malfunction, unusual noise) due to aged deterioration in valve clear-
ance.
1. Remove VVEL actuator motor assembly. Refer to EM-36, "
Removal and Installation".
2. Remove rocker covers (bank 1 and bank 2). Refer to EM-33, "
Removal and Installation".
3. Remove VVEL actuator housing assembly. Refer to EM-36, "
Removal and Installation".
4. Measure the valve clearance as per the following: Use the feeler gauge (commercial service tool) of cu rved-tip. This allows the feeler gauge to access the
clearance between camshaft (drive shaft) nose and valve lifter with ease.
NOTE:
Be sure to note the following points when measuring valve clearance on the intake side.
Before measuring, check that the position of drive shaft nose
is within the angle shown in the figure.
Refer to the figure for the insertion direction of the feeler gauge since the direction depends on the bank.Valve clearance : Refer to
EM-133, "
Camshaft".
A: Bank 2
B : Feeler gauge (commercial service tool)
c : 45 degrees (drive shaft nose angle)
D: View D
: Insertion direction of feeler gauge on the bank 2
: Insertion direction of feeler gauge on the bank 1
JPBIA3485ZZ
Revision: 2010 May2011 QX56

Page 2575 of 5598

INFINITI QX56 2011 Factory Service Manual
CAMSHAFT VALVE CLEARANCEEM-13
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a. Set No. 1 cylinder at TDC of its compression stroke.
Rotate crankshaft pulley clockwise to align timing mark
(gr

Page 2576 of 5598

INFINITI QX56 2011 Factory Service Manual
EM-14
< BASIC INSPECTION >
CAMSHAFT VALVE CLEARANCE
To measure valve clearance of No. 1 cylinder INT valve (front
side), insert feeler gauge (A) (commercial service tool) as shown
in the figure.
b. R

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