2011 INFINITI QX56 service

SERVICE DATA AND SPECIFICATIONS (SDS)
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*1: Diameter made by intersection point of conic angles “
α1” and “ α2”
*
2: Diameter made by intersection point of conic angles “ α2” and “ α3”
*
3: Machining data
*
4: Parts settings are for exhaust side only
VALVE SPRING
Cylinder BlockINFOID:0000000006289595
CYLINDER BLOCK
Unit: mm (in)
Angle “ α2” 88°75 ′ - 90 °25 ′
Angle “ α3” 11 9 - 1 2 1°
Contacting width “W”*
3Intake 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)
ItemStandard
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 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 0.2 (0.008)
Out-of-round Limit0.015 (0.0006)
Ta p e r 0.010 (0.0004)
Revision: 2010 May2011 QX56

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< 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. 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 inner diameter between cylinders Standard Less than 0.03 (0.0012)
Items Standard Oversize (S ervice) [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)
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
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OPISTON 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)
Revision: 2010 May2011 QX56

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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
Main journal diameter. “Dm” grade
(No. 1 and 5 journal)StandardGrade 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. 1
Grade No. 2
Grade No. 3
Grade No. 4
Grade No. 5
Grade No. 6
Grade No. 7
Grade No. 9 63.964 - 63.963 (2.5183 - 2.5182)
63.963 - 63.962 (2.5182 - 2.5182)
63.962 - 63.961 (2.5182 - 2.5181)
63.961 - 63.960 (2.5181 - 2.5181)
63.960 - 63.959 (2.5181 - 2.5181)
63.959 - 63.958 (2.5181 - 2.5180)
63.958 - 63.957 (2.5180 - 2.5180)
63.957 - 63.956 (2.5180 - 2.5179)
63.956 - 63.955 (2.5179 - 2.5179)
63.955 - 63.954 (2.5179 - 2.5179)
63.954 - 63.953 (2.5179 - 2.5178)
63.953 - 63.952 (2.5178 - 2.5178)
63.952 - 63.951 (2.5178 - 2.5178)
63.951 - 63.950 (2.5178 - 2.5177)
63.950 - 63.949 (2.5177 - 2.5177)
63.949 - 63.948 (2.5177 - 2.5176)
63.948 - 63.947 (2.5176 - 2.5176)
63.947 - 63.946 (2.5176 - 2.5176)
63.946 - 63.945 (2.5176 - 2.5175)
63.945 - 63.944 (2.5175 - 2.5175)
63.944 - 63.943 (2.5175 - 2.5174)
63.943 - 63.942 (2.5174 - 2.5174)
63.942 - 63.941 (2.5174 - 2.5174)
63.941 - 63.940 (2.5174 - 2.5173)
Main journal diameter. “Dm” grade
(No. 2, 3 and 4 journal) StandardGrade 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. 1
Grade No. 2 63.963 - 63.964 (2.5182 - 2.5183)
63.962 - 63.963 (2.5182 - 2.5182)
63.961 - 63.962 (2.5181 - 2.5182)
63.960 - 63.961 (2.5181 - 2.5181)
63.959 - 63.960 (2.5181 - 2.5181)
63.958 - 63.959 (2.5180 - 2.5181)
63.957 - 63.958 (2.5180 - 2.5180)
63.956 - 63.957 (2.5179 - 2.5180)
63.955 - 63.956 (2.5179 - 2.5179)
63.954 - 63.955 (2.5179 - 2.5179)
63.953 - 63.954 (2.5178 - 2.5179)
63.952 - 63.953 (2.5178 - 2.5178)
63.951 - 63.952 (2.5178 - 2.5178)
63.950 - 63.951 (2.5177 - 2.5178)
63.949 - 63.950 (2.5177 - 2.5177)
63.948 - 63.949 (2.5176 - 2.5177)
63.947 - 63.948 (2.5176 - 2.5176)
63.946 - 63.947 (2.5176 - 2.5176)
63.945 - 63.946 (2.5175 - 2.5176)
63.944 - 63.945 (2.5175 - 2.5175)
63.943 - 63.944 (2.5174 - 2.5175)
63.942 - 63.943 (2.5174 - 2.5174)
63.941 - 63.942 (2.5174 - 2.5174)
63.940 - 63.941 (2.5173 - 2.5174)
Pin journal diameter. “Dp” grade Standard Grade No. 0
Grade No. 1
Grade No. 253.968 - 53.974 (2.1247 - 2.1250)
53.962 - 53.968 (2.1245 - 2.1247)
53.956 - 53.962 (2.1243 - 2.1245)
SEM645
Revision: 2010 May2011 QX56

SERVICE DATA AND SPECIFICATIONS (SDS)
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*: Total indicator reading
Main BearingINFOID:0000000006289596
MAIN BEARING
UNDERSIZE
Unit: mm (in)
MAIN BEARING OIL CLEARANCE
Center distance “r”
45.96 - 46.04 (1.8095 - 1.8126)
Ta p e r Limit 0.0025 (0.0001)
Out-of-round 0.0025 (0.0001)
Crankshaft runout [TIR*] Standard Less than 0.05 (0.002)
Limit 0.10 (0.0039)
Crankshaft end play Standard 0.10 - 0.26 (0.0039 - 0.0102)
Limit 0.30 (0.012)
Grade number Thickness mm (in) Width mm (in) Identification color Remarks
0 2.483 - 2.486 (0.0978 - 0.0979)
19.9 - 20.1
(0.783 - 0.791) Black
Grade is the same
for upper and lower
bearings.
1 2.486 - 2.489 (0.0979 - 0.0980) Brown
2 2.489 - 2.492 (0.0980 - 0.0981) Green
3 2.492 - 2.495 (0.0981 - 0.0982) Yellow
4 2.495 - 2.498 (0.0982 - 0.0983) Blue
5 2.498 - 2.501 (0.0983 - 0.0985) Pink
6 2.501 - 2.504 (0.0985 - 0.0986) Purple
7 2.504 - 2.507 (0.0986 - 0.0987) White
8 2.507 - 2.510 (0.0987 - 0.0988) Red
01 UPR 2.483 - 2.486 (0.0978 - 0.0979) Black
Grade and color are
different for upper
and lower bearings.
LWR 2.486 - 2.489 (0.0979 - 0.0980) Brown
12 UPR 2.486 - 2.489 (0.0979 - 0.0980) Brown
LWR 2.489 - 2.492 (0.0980 - 0.0981) Green
23 UPR 2.489 - 2.492 (0.0980 - 0.0981) Green
LWR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
34 UPR 2.492 - 2.495 (0.0981 - 0.0982) Yellow
LWR 2.495 - 2.498 (0.0982 - 0.0983) Blue
45 UPR 2.495 - 2.498 (0.0982 - 0.0983) Blue
LWR 2.498 - 2.501 (0.0983 - 0.0985) Pink
56 UPR 2.498 - 2.501 (0.0983 - 0.0985) Pink
LWR 2.501 - 2.504 (0.0985 - 0.0986) Purple
67 UPR 2.501 - 2.504 (0.0985 - 0.0986) Purple
LWR 2.504 - 2.507 (0.0986 - 0.0987) White
78 UPR 2.504 - 2.507 (0.0986 - 0.0987) White
LWR 2.507 - 2.510 (0.0987 - 0.0988) Red
Items Thickness Main journal diameter
0.25 (0.0098) 2.618 - 2.626 (0.1031 - 0.1034) Grind so that bearing clearance is the specified value.
Revision: 2010 May2011 QX56

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< SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Unit: mm (in)
*: Actual clearance
Connecting Rod BearingINFOID:0000000006289597
CONNECTING ROD BEARING
UNDERSIZE
Unit: mm (in)
CONNECTING ROD BEARING OIL CLEARANCE
Unit: mm (in)
*: Actual clearanceItems Standard Limit
Main bearing oil clearance No.1 and 5 0.001 - 0.011 (0.00004 - 0.00043)*
0.065 (0.0026)
No.2, 3 and 4 0.007 - 0.017 (0.0003 - 0.0007)*
Grade number Thickness mm (in) Width mm (in) Identification color (mark)
1 1.500 - 1.503 (0.0591 - 0.0592)
18.1 - 18.3
(0.713 - 0.720) Black
2 1.503 - 1.506 (0.0592 - 0.0593) Brown
3 1.506 - 1.509 (0.0593 - 0.0594) Green
4 1.509 - 1.512 (0.0594 - 0.0595) Yellow
Items Thickness Pin journal diameter
0.25 (0.0098) 1.627 - 1.635 (0.0641 - 0.0644) Grind so that bearing clearance is the specified value.
Items Standard Limit
Connecting rod bearing oil clearance 0.020 - 0.039 (0.0008 - 0.0015)* 0.070 (0.0028)
Revision: 2010 May2011 QX56

EX-1
ENGINE
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SECTION EX
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CONTENTS
EXHAUST SYSTEM
PRECAUTION ................ ...............................2
PRECAUTIONS .............................................. .....2
Removal and Installation ..................................... ......2
PREPARATION ............................................3
PREPARATION .............................................. .....3
Special Service Tool ........................................... ......3
Commercial Service Tool ..........................................3
PERIODIC MAINTENANCE .........................4
EXHAUST SYSTEM ...........................................4
Inspection ............................................................ .....4
REMOVAL AND INSTALLATION ................5
EXHAUST SYSTEM ...........................................5
Exploded View ..................................................... .....5
Removal and Installation ..........................................5
Inspection .................................................................6
Revision: 2010 May2011 QX56

PREPARATIONEX-3
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PREPARATION
PREPARATION
Special Service ToolINFOID:0000000006289692
Commercial Service ToolINFOID:0000000006289693
Tool number
(Kent-Moore No.)
Tool name
Description
KV10114400
(J-38365)
Heated oxygen sensor wrench Loosening or tightening heated oxygen sen-
sor 2
For 22 mm (0.87 in) (a) width hexagon nut
S-NT636
Tool name
Description
Power tool Loosening bolts and nuts
PBIC0190E
Revision: 2010 May2011 QX56