2009 INFINITI QX56 Factory Service Manual

high beam alternator wheel torque key battery weight power steering fluid

Load previous 8 pages

Page 1913 of 4171

INFINITI QX56 2009 Factory Service Manual EM-90
< DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
16. Install knock sensors.CAUTION:
If knock sensor is dropped, replace it with a new one.
• Make sure that there is no foreign material on the cylinder

Page 1914 of 4171

INFINITI QX56 2009 Factory Service Manual ENGINE UNITEM-91
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
J
K L
M A
EM
NP
O
• Move the crankshaft fully forward and backward and measure the
clearance between the thrust bear ings and crankshaft ar

Page 1915 of 4171

INFINITI QX56 2009 Factory Service Manual EM-92
< DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
(Piston pin clearance) = (Piston pin hole diameter) – (Piston pin
diameter)
• If clearance exceeds specification, replace either or both the pis-
ton

Page 1916 of 4171

INFINITI QX56 2009 Factory Service Manual ENGINE UNITEM-93
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
J
K L
M A
EM
NP
O
CONNECTING ROD BEND AND TORSION
• Check connecting rod alignment using suitable tool.
• If measurement exceeds the limi

Page 1917 of 4171

INFINITI QX56 2009 Factory Service Manual EM-94
< DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
• Measure diameter of piston pin using suitable tool.
Connecting Rod Bushing Oil Clearance (Small End)
(Connecting rod small end oil clearance) = (Insi

Page 1918 of 4171

INFINITI QX56 2009 Factory Service Manual ENGINE UNITEM-95
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
J
K L
M A
EM
NP
O
• Install the main bearing caps with the main bearings removed, and
tighten the bolts to the specified torque. Refer to

Page 1919 of 4171

INFINITI QX56 2009 Factory Service Manual EM-96
< DISASSEMBLY AND ASSEMBLY >
ENGINE UNIT
• Measure point ″H″.
Piston to Cylinde r Bore Clearance
• Calculate by using diameter of the piston skirt and the cylinder bore diameter (directi

Page 1920 of 4171

INFINITI QX56 2009 Factory Service Manual ENGINE UNITEM-97
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
J
K L
M A
EM
NP
O
• Measure diameter of crankshaft pin using suitable tool.
• If measurement is out of standard, measure connecting rod b

ENGINE UNITEM-97
< DISASSEMBLY AND ASSEMBLY >
C
DE
F
G H
I
J
K L
M A
EM
NP
O
• Measure diameter of crankshaft pin using suitable tool.
• If measurement is out of standard, measure connecting rod bear-
ing oil clearance. Then use undersize bearing.
OUT-OF-ROUND AND TAPER OF CRANKSHAFT
• Measure dimensions at four di fferent points as shown on each
journal and pin.
• Out-of-roundness is indicated by the difference in dimension
between ″X″ and ″Y″ at ″A″ and ″B″ .
• Taper is indicated by the difference in dimension between ″A ″ and
″ B″ at ″X ″ and ″Y″ .
• If measured value exceeds the standard, correct or replace crankshaft.
• If corrected, measure the bearing oil clearance of the corrected journal or pin. Then select the main bearing or connecting rod bearing.
CRANKSHAFT RUNOUT
• Place a V-block on a precise flat table to support the journals onboth ends of the crankshaft.
• Measure at No. 3 journal using suitable tool.
• While rotating crankshaft, read the movement of the pointer.
• Half of the movement shows the runout.
• If measurement exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method of Measurement
• Install connecting rod bearings to the connecting rod and cap. Tighten connecting rod bolts to the specified
torque. Refer to EM-83, "
Disassembly and Assembly".
Measure inside diameter of connecting rod bearing.
(Oil clearance) = (Inside diameter of connecting rod bearing) –
(Crankshaft pin diameter)
• If clearance cannot be adjusted wit hin the standard, grind crank-
shaft pin and use undersized bearing. Refer to EM-101, "
How to
Select Piston and Bearing".
Method of Using Plastigage
Standard : 53.956 - 53.974 mm (2.1243 - 2.1250 in)
PBIC0127E
Limit
Out-of-round (Difference between ″X ″ and ″ Y″)
: 0.002 mm (0.0001 in)
Taper (Difference between ″ A″ and ″B ″)
: 0.002 mm (0.0001 in)
PBIC1685E
Limit : Less than 0.05 mm (0.002 in)
PBIC0129E
Standard : 0.020 - 0.039 mm (0.0008 - 0.0015 in)
Limit : 0.055 mm (0.0022 in)
PBIC1642E
Revision: December 20092009 QX56

Load next 8 pages

Page: < prev 1-10 ... 1881-1888 1889-1896 1897-1904 1905-1912 1913-1920 1921-1928 1929-1936 1937-1944 1945-1952 ... 4176 next >

tyre pressure glove box maintenance schedule bonnet clock gas mileage