NISSAN PATROL 1998 Y61 / 5.G Engine Mechanical Repair Manual

Available shim
Thickness mm (in) Identi®cation mark
2.90 (0.1142) 2.90
2.85 (0.1122) 2.85
2.80 (0.1102) 2.80
2.75 (0.1083) 2.75
2.70 (0.1063) 2.70
2.65 (0.1043) 2.65
2.60 (0.1024) 2.60
2.55 (0.1004) 2.55
2.50 (0.0984) 2.50
2.45 (0.0965) 2.45
2.40 (0.0945) 2.40
2.35 (0.0925) 2.35
2.30 (0.0906) 2.30
2.25 (0.0886) 2.25
2.20 (0.0866) 2.20
Valve clearance
Unit: mm (in)
For adjusting
Hot Cold*
Intake0.28 - 0.38
(0.011 - 0.015)0.26 - 0.34
(0.010 - 0.013)
Exhaust0.32 - 0.42
(0.013 - 0.017)0.30 - 0.38
(0.012 - 0.015)
*: At a temperature of approximately 20ÉC (68ÉF)
Whenever valve clearances are adjusted to cold speci®cations,
check that the clearances satisfy hot speci®cations and adjust
again if necessary.
CAMSHAFT AND CAMSHAFT BEARING
Unit: mm (in)
Standard Limit
Camshaft journal to
bearing clearance0.045 - 0.086
(0.0018 - 0.0034)0.1 (0.004)
Inner diameter of cam-
shaft bearing30.000 - 30.021
(1.1811 - 1.1819)Ð
Outer diameter of cam-
shaft journal29.935 - 29.955
(1.1785 - 1.1793)Ð
Camshaft runout [TIR*] Ð 0.02 (0.0008)
Camshaft sprocket
runout [TIR*]Less than
0.25 (0.0098)Ð
Camshaft end play0.065 - 0.169
(0.0026 - 0.0067)0.20 (0.0079)
EM671
Cam height ``A''
Intake 48.005 - 48.195 (1.8900 - 1.8974)
Exhaust 49.505 - 49.695 (1.9490 - 1.9565)
Wear limit of cam height 0.15 (0.0059)
Valve lift
Intake 8.27 (0.326)
Exhaust 9.43 (0.371)
*: Total indicator reading
SEM797F
SERVICE DATA AND SPECIFICATIONS (SDS)
Inspection and Adjustment (Cont'd)
EM-60

CYLINDER BLOCK
Unit: mm (in)
SEM964EA
SEM686DA
Surface ¯atness
Standard Less than 0.03 (0.0012)
Limit 0.1 (0.004)
Cylinder bore
Inner diameter
Standard
Grade No. 1 85.000 - 85.010 (3.3465 - 3.3468)
Grade No. 2 85.010 - 85.020 (3.3468 - 3.3472)
Grade No. 3 85.020 - 85.030 (3.3472 - 3.3476)
Wear limit 0.20 (0.0079)
Out-of-round (X þ Y)
Standard Less than 0.015 (0.0006)
Taper (A þ B and A þ C)
Standard Less than 0.010 (0.0004)
Difference in inner diam-
eter between cylinders
Limit Less than 0.05 (0.0020)
Main journal inner
diameter
Grade No. 0 58.645 - 58.654 (2.3089 - 2.3092)
Grade No. 1 58.654 - 58.663 (2.3092 - 2.3096)
Grade No. 2 58.663 - 58.672 (2.3096 - 2.3099)
PISTON, PISTON RING AND PISTON PIN
Piston
Unit: mm (in)
SEM750C
Piston skirt diameter ``A''
Standard
Grade No. 1 84.960 - 84.970 (3.3449 - 3.3453)
Grade No. 2 84.970 - 84.980 (3.3453 - 3.3457)
Grade No. 3 84.980 - 84.990 (3.3457 - 3.3461)
0.50 (0.0197) over-
size (Service)85.460 - 85.490 (3.3646 - 3.3657)
1.00 (0.0394) over-
size (Service)85.960 - 85.990 (3.3842 - 3.3854)
``a'' dimension 14.5 (0.571)
Piston clearance to cylinder
block0.030 - 0.050 (0.0012 - 0.0020)
Piston pin hole diameter 26.995 - 27.005 (1.0628 - 1.0632)
SERVICE DATA AND SPECIFICATIONS (SDS)
Inspection and Adjustment (Cont'd)
EM-61

Piston ring
Unit: mm (in)
Side clearance
To p
Standard0.060 - 0.093
(0.0024 - 0.0037)
Limit 0.1 (0.004)
2nd
Standard0.040 - 0.073
(0.0016 - 0.0029)
Limit 0.1 (0.004)
Oil
Standard0.030 - 0.063
(0.0012 - 0.0025)
Limit Ð
Ring gap
To p
Standard0.20 - 0.28
(0.0079 - 0.0110)
Limit 1.0 (0.039)
2nd
Standard0.38 - 0.53
(0.0150 - 0.0209)
Limit 1.0 (0.039)
Oil
Standard0.30 - 0.56
(0.0118 - 0.0220)
Limit 1.0 (0.039)
Piston pin
Unit: mm (in)
Piston pin outer diameter 26.994 - 27.000 (1.0628 - 1.0630)
Interference ®t of piston pin
to piston0.002 - 0.006 (0.0001 - 0.0002)
Piston pin to connecting rod
bushing clearance
Standard 0.025 - 0.044 (0.0010 - 0.0017)
* Values measured at ambient temperature of 20ÉC (68ÉF)
CONNECTING ROD
Unit: mm (in)
Center distance 140.0 (5.512)
Bend [per 100 (3.94)]
Limit 0.025 (0.0010)
Torsion [per 100 (3.94)]
Limit 0.025 (0.0010)
Connecting rod small end
inner diameter30.000 - 30.013 (1.1811 - 1.1816)
Piston pin bushing inner
diameter*27.025 - 27.038 (1.0640 - 1.0645)
Connecting rod big end inner
diameter
Grade No. 0 53.000 - 53.007 (2.0866 - 2.0869)
Grade No. 1 53.007 - 53.013 (2.0869 - 2.0871)
Side clearance
Standard 0.20 - 0.30 (0.0079 - 0.0118)
Limit 0.40 (0.0157)
*: After installing in connecting rod
SERVICE DATA AND SPECIFICATIONS (SDS)
Inspection and Adjustment (Cont'd)
EM-62

CRANKSHAFT
Unit: mm (in)
Main journal dia. ``Dm''
Grade No. 0 54.967 - 54.975 (2.1641 - 2.1644)
Grade No. 1 54.959 - 54.967 (2.1637 - 2.1641)
Grade No. 2 54.951 - 54.959 (2.1634 - 2.1637)
Pin journal dia. ``Dp''
Grade No. 0 49.968 - 49.974 (1.9672 - 1.9675)
Grade No. 1 49.961 - 49.968 (1.9670 - 1.9672)
Center distance ``r'' 41.47 - 41.53 (1.6327 - 1.6350)
Out-of-round (X þ Y)
Standard
Main journal Less than 0.005 (0.0002)
Pin journal Less than 0.0025 (0.0001)
Taper (A þ B)
Standard
Main journal Less than 0.005 (0.0002)
Pin journal Less than 0.0025 (0.0001)
Runout [TIR]
Standard Less than 0.025 (0.0010)
Limit Less than 0.05 (0.0020)
Free end play
Standard 0.05 - 0.18 (0.0020 - 0.0071)
Limit 0.30 (0.0118)
SEM645
EM715
MAIN BEARING
SEM157B
Standard
Unit: mm (in)
Grade
numberThickness ``T'' Width ``W''Identi®cation
color
01.813 - 1.817
(0.0714 - 0.0715)
19.7 - 19.9
(0.776 - 0.783)Black
11.817 - 1.821
(0.0715 - 0.0717)Brown
21.821 - 1.825
(0.0717 - 0.0719)Ð
31.825 - 1.829
(0.0719 - 0.0720)Yellow
41.829 - 1.833
(0.0720 - 0.0722)Blue
Undersize
Unit: mm (in)
Undersize Thickness ``T''Main journal
diameter ``Dm''
0.25 (0.0098)2.109 - 2.117
(0.0830 - 0.0833)Grind so that bearing
clearance is the
speci®ed value.
CONNECTING ROD BEARING
Connecting rod bearing
Standard size
Unit: mm (in)
Grade
numberThickness ``T'' Width ``W''Identi®cation
color
01.492 - 1.496
(0.0587 - 0.0589)
19.9 - 20.1
(0.783 - 0.791)Black
11.496 - 1.500
(0.0589 - 0.0591)Yellow
21.500 - 1.504
(0.0591 - 0.0592)Brown
SERVICE DATA AND SPECIFICATIONS (SDS)
Inspection and Adjustment (Cont'd)
EM-63

Undersize
Unit: mm (in)
Undersize Thickness ``T''Crank pin journal
diameter ``Dp''
0.08 (0.0031)1.536 - 1.540
(0.0605 - 0.0606)
Grind so that bearing
clearance is the
speci®ed value. 0.12 (0.0047)1.556 - 1.560
(0.0613 - 0.0614)
0.25 (0.0098)1.621 - 1.625
(0.0638 - 0.0640)
Bearing clearance
Unit: mm (in)
Main bearing clearance
Standard 0.036 - 0.063 (0.0014 - 0.0025)
Limit 0.12 (0.0047)
Connecting rod bearing clearance
Standard 0.031 - 0.055 (0.0012 - 0.0022)
Limit 0.11 (0.0043)
MISCELLANEOUS COMPONENTS
Unit: mm (in)
Camshaft sprocket runout limit
[TIR]0.1 (0.004)
Flywheel runout limit [TIR] 0.1 (0.004)
Drive plate runout limit [TIR] 0.1 (0.004)
SERVICE DATA AND SPECIFICATIONS (SDS)
Inspection and Adjustment (Cont'd)
EM-64