2009 INFINITI QX56 Factory Service Manual

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Page 1929 of 4171

INFINITI QX56 2009 Factory Service Manual EM-106
< DISASSEMBLY AND ASSEMBLY >
HOW TO SELECT PISTON AND BEARING
Main Bearings Selection Table (No. 2, 3 and 4 journal)
Main Bearings Grade Table (All Journals)
Unit: mm (in)
WBIA0609E
Grade numbe

Page 1930 of 4171

INFINITI QX56 2009 Factory Service Manual HOW TO SELECT PISTON AND BEARINGEM-107
< DISASSEMBLY AND ASSEMBLY >
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Use Undersize Bearing Usage Guide
• Use undersize (US) bearing when the oil clearance with
standar

Page 1931 of 4171

INFINITI QX56 2009 Factory Service Manual EM-108
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and LimitINFOID:0000000005885

Page 1932 of 4171

INFINITI QX56 2009 Factory Service Manual SERVICE DATA AND SPECIFICATIONS (SDS)EM-109
< SERVICE DATA AND SPECIFICATIONS (SDS)
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Unit: mm (in)
SPARK PLUG
Unit: mm (in)
*: Always check with the Parts Department for

Page 1933 of 4171

INFINITI QX56 2009 Factory Service Manual EM-110
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*: Approximately 80°C (176 °F)
Available Valve Lifter
Unit: mm (in)
*: Always check with the Parts

Page 1934 of 4171

INFINITI QX56 2009 Factory Service Manual SERVICE DATA AND SPECIFICATIONS (SDS)EM-111
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Unit: mm (in)
Spark Plug Tube
Unit: mm (in)
Valve Dimensions
Unit: mm (in)
Items
Sta

Page 1935 of 4171

INFINITI QX56 2009 Factory Service Manual EM-112
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Valve Guide
Unit: mm (in)
Va l v e S e a t
Unit: mm (in)
Valve Spring
Valve seat angle “α” Intake
45°15 ′

Page 1936 of 4171

INFINITI QX56 2009 Factory Service Manual SERVICE DATA AND SPECIFICATIONS (SDS)EM-113
< SERVICE DATA AND SPECIFICATIONS (SDS)
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CYLINDER BLOCK
Unit: mm (in)
PISTON, PISTON RING AND PISTON PIN
Available Piston
Fre

SERVICE DATA AND SPECIFICATIONS (SDS)EM-113
< SERVICE DATA AND SPECIFICATIONS (SDS)
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CYLINDER BLOCK
Unit: mm (in)
PISTON, PISTON RING AND PISTON PIN
Available Piston
Free height mm (in)
50.58 (1.9913)
Pressure N (kg, lb) at height mm (in) Installation
165.8 - 187.0 (16.9 - 19.1, 37 - 42) at 37.0 (1.457)
Valve open 314.8 - 355.0 (32.1 - 36.2, 71 - 80) at 28.2 (1.110)
Out-of-square mm (in) Less than 2.2 (0.087)
Surface flatnessStandard
0.03 (0.0012)
LImit 0.1 (0.004)
Main bearing housing inside diameter Standard68.944 - 68.968 (2.7143 - 2.7153)
Cylinder bore diameter StandardGrade No. 1
98.000 - 98.010 (3.8583 - 3.8587)
Grade No. 2 98.010 - 98.020 (3.8587 - 3.8590)
Grade No. 3 98.020 - 98.030 (3.8590 - 3.8594)
Wear limit 0.20 (0.0079)
Out-of-round (Difference between X and Y) Limit 0.015 (0.0006)
Taper (Difference between A and C) 0.010 (0.0004)
Main journal inside diameter grade (Without bearing) Grade No. A
Grade No. B
Grade No. C
Grade No. D
Grade No. E
Grade No. F
Grade No. G
Grade No. H
Grade No. J
Grade No. K
Grade No. L
Grade No. M
Grade No. N
Grade No. P
Grade No. R
Grade No. S
Grade No. T
Grade No. U
Grade No. V
Grade No. W
Grade No. X
Grade No. Y
Grade No. 4
Grade No. 768.944 - 68.945 (2.7143 - 2.7144)
68.945 - 68.946 (2.7144 - 2.7144)
68.946 - 68.947 (2.7144 - 2.7144)
68.947 - 68.948 (2.7144 - 2.7145)
68.948 - 68.949 (2.7145 - 2.7145)
68.949 - 68.950 (2.7145 - 2.7146)
68.950 - 68.951 (2.7146 - 2.7146)
68.951 - 68.952 (2.7146 - 2.7146)
68.952 - 68.953 (2.7146 - 2.7147)
68.953 - 68.954 (2.7147 - 2.7147)
68.954 - 68.955 (2.7147 - 2.7148)
68.955 - 68.956 (2.7148 - 2.7148)
68.956 - 68.957 (2.7148 - 2.7148)
68.957 - 68.958 (2.7148 - 2.7149)
68.958 - 68.959 (2.7149 - 2.7149)
68.959 - 68.960 (2.7149 - 2.7150)
68.960 - 68.961 (2.7150 - 2.7150)
68.961 - 68.962 (2.7150 - 2.7150)
68.962 - 68.963 (2.7150 - 2.7151)
68.963 - 68.964 (2.7151 - 2.7151)
68.964 - 68.965 (2.7151 - 2.7152)
68.965 - 68.966 (2.7152 - 2.7152)
68.966 - 68.967 (2.7152 - 2.7152)
68.967 - 68.968 (2.7152 - 2.7153)
Difference in bore diameter between cylinders Standard Less than 0.03 (0.0012)
PBIC0123E
Revision: December 20092009 QX56

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