Nissan Pathfinder (2009 year). Instruction — part 399

HOW TO SELECT PISTON AND BEARING

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Use Undersize Bearing Usage Guide

• Use undersize (US) bearing when the oil clearance with standard size main bearing is not within specifica-

tion.

• When using undersize (US) bearing, measure the inside diameter of the bearing installed and grind the jour-

nal until the oil clearance falls within specification.
Bearing undersize table

Unit: mm (in)

CAUTION:

Do not damage fillet R when grinding crankshaft journal in
order to use undersized bearing (All journals).

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

Undersize

Thickness

0.25 (0.0098)

2.618 - 2.626 (0.1031 - 0.1034)

Fillet R

: 1.5 - 1.7 mm (0.059 - 0.067 in)

PBIC0111E

2009 Pathfinder

EM-250

< SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

SERVICE DATA AND SPECIFICATIONS (SDS)

Standard and Limit

INFOID:0000000003939579

GENERAL SPECIFICATIONS

DRIVE BELTS

EXHAUST MANIFOLD

Cylinder arrangement

V-8

Displacement

cm

3

(in

3

)

5,552 (338.80)

Bore and stroke

mm (in)

98 x 92 (3.86 x 3.62)

Valve arrangement

DOHC

Firing order

1-8-7-3-6-5-4-2

Number of piston rings

Compression

2

Oil

1

Number of main bearings

5

Compression ratio

9.8:1

Compression pressure kPa

(kg/cm

2

, psi)/rpm

Standard

1,520 (15.5, 220)/200

Minimum

1,324 (13.5, 192)/200

Differential limit between cylinders

98 (1.0, 14)/200

Cylinder number

Valve timing

Unit: degree

a

b

c

d

e

f

244

°

232

°

8

°

60

°

10

°

54

°

SEM957C

PBIC0187E

Tension of drive belts

Auto adjustment by auto tensioner

2009 Pathfinder

SERVICE DATA AND SPECIFICATIONS (SDS)

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Unit: mm (in)

SPARK PLUG

Unit: mm (in)

CAMSHAFT AND CAMSHAFT BEARING

Unit: mm (in)

*: Total indicator reading

Valve Seal

Unit: mm (in)

Valve Lifter

Unit: mm (in)

Valve Clearance

Items

Limit

Surface distortion

Exhaust manifold

0.3 (0.012)

Make

NGK

Standard type

DILFR5A-11

Gap (nominal)

1.1 (0.043)

Items

Standard

Camshaft runout [TIR*]

Less than 0.02 (0.0008)

Camshaft cam height “A”

Intake

44.865 - 45.055 (1.7663 - 1.7738)

Exhaust

45.075 - 45.265 (1.7746 - 1.7821)

Cam wear limit

0.02 (0.0008)

Outside diameter of camshaft journal

25.950 - 25.970 (1.0217 - 1.0224)

Camshaft bracket inside diameter

26.000 - 26.021 (1.0236 - 1.0244)

Camshaft journal clearance

0.030 - 0.071 (0.0012 - 0.0028)

Camshaft end play

0.115 - 0.188 (0.0045 - 0.0074)

Camshaft dimension (A) for No. 1 journal

30.500 - 30.548 (1.2008 - 1.2027)

Cylinder head dimension (B) for No. 1 journal

30.360 - 30.385 (1.1953 - 1.1963)

Camshaft sprocket runout [TIR*]

Less than 0.15 (0.0059)

SEM671

Items

Standard

Height (H) (without valve spring installed)

14.300 - 14.900 (0.5630 - 0.5870)

Items

Standard

Valve lifter diameter

33.977 - 33.987 (1.3377 - 1.3381)

Valve lifter hole diameter

34.000 - 34.016 (1.3386 - 1.3392)

Clearance between lifter and lifter guide

0.013 - 0.039 (0.0005 - 0.0015)

2009 Pathfinder

EM-252

< SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

Unit: mm (in)

*: Approximately 80

°

C (176

°

F)

Available Valve Lifter

Unit: mm (in)

CYLINDER HEAD

Items

Hot*

Cold

Intake

0.304 - 0.416 (0.012 - 0.016)

0.26 - 0.34 (0.010 - 0.013)

Exhaust

0.308 - 0.432 (0.012 - 0.017)

0.29 - 0.37 (0.011 - 0.015)

Identification (stamped) Mark

Thickness

N788

7.88 (0.3102)

N790

7.90 (0.3110)

N792

7.92 (0.3118)

N794

7.94 (0.3126)

N796

7.96 (0.3134)

N798

7.98 (0.3142)

N800

8.00 (0.3150)

N802

8.02 (0.3157)

N804

8.04 (0.3165)

N806

8.06 (0.3173)

N808

8.08 (0.3181)

N810

8.10 (0.3189)

N812

8.12 (0.3197)

N814

8.14 (0.3205)

N816

8.16 (0.3213)

N818

8.18 (0.3220)

N820

8.20 (0.3228)

N822

8.22 (0.3236)

N824

8.24 (0.3244)

N826

8.26 (0.3252)

N828

8.28 (0.3260)

N830

8.30 (0.3268)

N832 8.32

(0.3276)

N834

8.34 (0.3283)

N836

8.36 (0.3291)

SEM758G

2009 Pathfinder

SERVICE DATA AND SPECIFICATIONS (SDS)

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Unit: mm (in)

Spark Plug Tube

Unit: mm (in)

Valve Dimensions

Unit: mm (in)

Valve Guide

Items

Standard

Limit

Head surface distortion

0.03 (0.0012)

0.1 (0.004)

Nominal cylinder head height “H”

126.3 (4.97)

KBIA2554E

Items

Standard

Press fit height (H)

38.4 - 39.4 (1.512 - 1.551)

Valve head diameter “D”

Intake

37.0 - 37.3 (1.457 - 1.469)

Exhaust

31.2 - 31.5 (1.228 - 1.240)

Valve length “L”

Intake

96.21- 96.71 (3.7878 - 3.8075)

Exhaust

93.74 - 94.24 (3.6905 - 3.7102)

Valve stem diameter “d”

Intake

5.965 - 5.980 (0.2348 - 0.2354)

Exhaust

5.955 - 5.970 (0.2344 - 0.2350)

Valve seat angle “

α

”

Intake

45

°

15

′

- 45

°

45

′

Exhaust

Valve margin “T”

Intake

1.1 (0.043)

Exhaust

1.3 (0.051)

SEM188

2009 Pathfinder

EM-254

< SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

Unit: mm (in)

Valve Seat

Unit: mm (in)

Valve Spring

CYLINDER BLOCK

Items

Standard

Oversize [0.2 (0.008)] (service)

Valve guide

Outside diameter

10.023 - 10.034 (0.3946 - 0.3950)

10.223 - 10.234 (0.4025 - 0.4029)

Inside 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

Stem to guide clearance

Intake

0.020 - 0.053 (0.0008 - 0.0021)

0.08 (0.0031)

Exhaust

0.030 - 0.063 (0.0012 - 0.0025)

0.09 (0.0035)

Projection length “L”

Intake

12.6 - 12.8 (0.496 - 0.504)

Exhaust

12.5 - 12.9 (0.492 - 0.508)

KBIA2555E

Items

Standard

Oversize [0.5 (0.020)] (Service)

Cylinder head seat recess diameter

″

D

″

Intake

38.000 - 38.016 (1.4961 - 1.4967)

38.500 - 38.516 (1.5157 - 1.5164)

Exhaust

32.200 - 32.216 (1.2677 - 1.2683)

32.700 - 32.716 (1.2874 - 1.2880)

Valve seat interference fit

Intake

0.081 - 0.113 (0.0032 - 0.0044)

Exhaust

0.064 - 0.096 (0.0025 - 0.0038)

Valve seat diameter

″

d

″

Intake

38.097 - 38.113 (1.4999 - 1.5005)

38.597 - 38.613 (1.5196 - 1.5202)

Exhaust

32.280 - 32.296 (1.2709 - 1.2715)

32.780 - 32.796 (1.2905 - 1.2912)

KBIA2541E

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)

2009 Pathfinder

SERVICE DATA AND SPECIFICATIONS (SDS)

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Unit: mm (in)

PISTON, PISTON RING AND PISTON PIN

Available Piston

Surface flatness

Standard

0.03 (0.0012)

LImit

0.1 (0.004)

Main bearing housing inside diameter

Standard

68.944 - 68.968 (2.7143 - 2.7153)

Cylinder bore 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

0.20 (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. 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 bore diameter between cylinders

Standard

Less than 0.03 (0.0012)

PBIC0123E

2009 Pathfinder

EM-256

< SERVICE DATA AND SPECIFICATIONS (SDS)

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SERVICE DATA AND SPECIFICATIONS (SDS)

Unit: mm (in)

Piston Ring

Unit: mm (in)

Piston Pin

Unit: mm (in)

CONNECTING ROD

Unit: mm (in)

Items

Standard

Limit

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)

—

“H” dimension

39 (1.54)

—

Piston pin hole diameter

Grade No. 0

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

0.035 - 0.085 (0.0014 - 0.0033)

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 - 0.0073)

—

End gap

Top

0.23 - 0.33 (0.0091 - 0.0130)

0.56 (0.0220)

2nd

0.25 - 0.40 (0.0098 - 0.0157)

0.52 (0.0205)

Oil ring

0.20 - 0.60 (0.0079 - 0.0236)

0.96 (0.0378)

Items

Standard

Piston pin diameter

Grade No. 0

21.989 - 21.995 (0.8657 - 0.8659)

Piston to piston pin clearance

0.002 - 0.006 (0.0001 - 0.0002)

Connecting rod bushing oil clearance

0.005 - 0.017 (0.0002 - 0.0007)

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 inside diameter*
(small end)

Grade No. 0

22.000 - 22.006 (0.8661 - 0.8664)

—

Connecting rod big end inside diameter (without bearing)

57.000 - 57.013 (2.2441 - 2.2446)

—

2009 Pathfinder