Infiniti QX56 (Z62). Manual — part 674
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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*: Parts settings are for exhaust side only
VALVE SEAT
Unit: mm (in)
Items
Standard
Oversize (Service) [0.2 (0.008)]*
Valve guide
Outer diameter
10.023 - 10.034 (0.3946 - 0.3950)
10.223 - 10.234 (0.4025 - 0.4029)*
Inner diameter (Finished size)
6.000 - 6.018 (0.2362 - 0.2369)
Cylinder head valve guide hole diameter
9.975 - 9.996 (0.3927 - 0.3935)
10.175 - 10.196 (0.4006 - 0.4014)*
Interference fit of valve guide
0.027 - 0.059 (0.0011 - 0.0023)
Items
Standard
Limit
Valve guide clearance
Intake
0.020 - 0.053 (0.0008 - 0.0021)
0.08 (0.003)
Exhaust
0.030 - 0.063 (0.0012 - 0.0025)
0.09 (0.004)
Projection length “L”
Intake
12.6 - 12.8 (0.496 - 0.504)
Exhaust
12.6 - 12.8 (0.496 - 0.504)
SEM950E
Items
Standard
Oversize (Service) [0.5 (0.02)] *
4
Cylinder head seat recess di-
ameter “D”
Intake
38.000 - 38.016 (1.4961 - 1.4967)
—
Exhaust
32.200 - 32.216 (1.2677 - 1.2683)
32.700 - 32.716 (1.2874 - 1.2880)*
4
Valve seat outer diameter “d”
Intake
38.097 - 38.113 (1.4999 - 1.5005)
—
Exhaust
32.280 - 32.296 (1.2709 - 1.2715)
32.780 - 32.796 (1.2906 - 1.2912)*
4
Valve seat interference fit
Intake
0.081 - 0.113 (0.0032 - 0.0044)
Exhaust
0.064 - 0.096 (0.0025 - 0.0038)
Diameter “d1”*
1
Intake
34.6 (1.362)
Exhaust
28.7 (1.130)
Diameter “d2”*
2
Intake
35.9 - 36.4 (1.413 - 1.433)
Exhaust
30.3 - 30.8 (1.193 - 1.213)
Angle “
α
1”
59 - 61
°
PBIC2745E
SERVICE DATA AND SPECIFICATIONS (SDS)
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< SERVICE DATA AND SPECIFICATIONS (SDS)
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*
1
: Diameter made by intersection point of conic angles “
α
1” and “
α
2”
*
2
: Diameter made by intersection point of conic angles “
α
2” and “
α
3”
*
3
: Machining data
*
4
: Parts settings are for exhaust side only
VALVE SPRING
Cylinder Block
INFOID:0000000006289595
CYLINDER BLOCK
Unit: mm (in)
Angle “
α
2”
88
°
75
′
- 90
°
25
′
Angle “
α
3”
119 - 121
°
Contacting width “W”*
3
Intake
1.0 - 1.4 (0.039 - 0.055)
Exhaust
1.2 - 1.6 (0.047 - 0.063)
Height “h”
Intake
5.9 - 6.0 (0.232 - 0.236)
—
Exhaust
5.9 - 6.0 (0.232 - 0.236)
4.95 - 5.05 (0.1949 - 0.1988)*
4
Depth “H”
6.0 (0.236)
Item
Standard
Intake
Exhaust
Free height
47.28 mm (1.8614 in)
48.06 mm (1.8921 in)
Pressure
Installation
166 - 188 N (16.9 - 19.2 kg, 37 - 42 lb)
at 41.0 mm (1.614 in)
166 - 188 N (16.9 - 19.2 kg, 37 - 42 lb)
at 34.45 mm (1.3563 in)
Valve open
541 - 611 N (55.2 - 62.3 kg, 122 - 137 lb)
at 29.6 mm (1.165 in)
320.1 - 360.1 N (32.7 - 36.7 kg, 72 - 81 lb)
at 24.65 mm (0.9705 in)
Identification color
Light green
Light blue
Item
Limit
Intake
Exhaust
Out-of-square
2.1 mm (0.083 in)
2.0 mm (0.079 in)
Surface flatness
Limit
0.1 (0.004)
Main bearing housing inner diameter
Standard
68.944 - 68.968 (2.7143 - 2.7153)
Cylinder bore
Inner diameter
Standard
Grade 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
0.2 (0.008)
Out-of-round
Limit
0.015 (0.0006)
Taper
0.010 (0.0004)
EM-138
< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
AVAILABLE PISTON
Unit: mm (in)
PISTON RING
Unit: mm (in)
Main bearing housing inner 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. 7
68.944 - 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 inner diameter between cylinders
Standard
Less than 0.03 (0.0012)
Items
Standard
Oversize (Service) [0.2 (0.008)]
Piston skirt diameter “A”
Grade No. 1
97.980 - 97.990 (3.8575 - 3.8579)
—
Grade No. 2
97.990 - 98.000 (3.8579 - 3.8583)
—
Grade No. 3
98.000 - 98.010 (3.8583 - 3.8587)
—
Service
—
95.680 - 95.710 (3.7669 - 3.7681)
Items
Standard
Limit
“H” dimension
40.0 (1.5748)
—
Piston pin hole diameter
21.993 - 21.999 (0.8659 - 0.8661)
—
Piston to cylinder bore clearance
0.010 - 0.030 (0.0004 - 0.0012)
0.08 (0.0031)
PBIC0188E
Items
Standard
Limit
Side clearance
Top
0.040 - 0.080 (0.0016 - 0.0031)
0.11 (0.0043)
2nd
0.030 - 0.070 (0.0012 - 0.0028)
0.10 (0.0039)
Oil ring
0.015 - 0.185 (0.0006 - 0.00728)
0.22 (0.0087)
SERVICE DATA AND SPECIFICATIONS (SDS)
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PISTON PIN
Unit: mm (in)
CONNECTING ROD
Unit: mm (in)
*: After installing in connecting rod
CRANKSHAFT
End gap
Top
0.23 - 0.28 (0.0091 - 0.0110)
0.50 (0.0197)
2nd
0.50 - 0.65 (0.0197 - 0.0256)
0.84 (0.0331)
Oil (rail ring)
0.20 - 0.60 (0.0079 - 0.0236)
0.95 (0.0374)
Items
Standard
Limit
Piston pin outer diameter
21.989 - 21.995 (0.8657 - 0.8659)
—
Piston to piston pin oil clearance
0.002 - 0.006 (0.0001 - 0.0002)
—
Connecting rod bushing oil clearance
0.005 - 0.017 (0.0002 - 0.0007)
0.030 (0.0012)
Items
Standard
Limit
Center distance
154.45 - 154.55 (6.08 - 6.08)
—
Bend [per 100 (3.94)]
—
0.15 (0.0059)
Torsion [per 100 (3.94)]
—
0.30 (0.0118)
Connecting rod bushing inner diameter*
22.000 - 22.006 (0.8661 - 0.8664)
—
Connecting rod big end diameter (Without bearing)
Grade No. A
57.000 - 57.001 (2.2441 - 2.2441)
Grade No. B
57.001 - 57.002 (2.2441 - 2.2442)
Grade No. C
57.002 - 57.003 (2.2442 - 2.2442)
Grade No. D
57.003 - 57.004 (2.2442 - 2.2442)
Grade No. E
57.004 - 57.005 (2.2442 - 2.2443)
Grade No. F
57.005 - 57.006 (2.2443 - 2.2443)
Grade No. G
57.006 - 57.007 (2.2443 - 2.2444)
Grade No. H
57.007 - 57.008 (2.2444 - 2.2444)
Grade No. J
57.008 - 57.009 (2.2444 - 2.2444)
Grade No. K
57.009 - 57.010 (2.2444 - 2.2445)
Grade No. L
57.010 - 57.011 (2.2445 - 2.2445)
Grade No. M
57.011 - 57.012 (2.2445 - 2.2446)
Grade No. N
57.012 - 57.013 (2.2446 - 2.2446)
Side clearance
0.20 - 0.40 (0.0079 - 0.0158)
0.40 (0.0157)
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