2003 NISSAN X-TRAIL Electronic Repair Manual

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NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER BLOCK
EM-191
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lInsert a flat-bladed screwdriver between main bearing cap and rear oil seal retainer to remove retainer.
9. Remove rear oil seal from rear o

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NISSAN X-TRAIL 2003 Electronic Repair Manual EM-192
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b. Using industrial dryer, heat pistons up to 60 to 70°C (140 to
158°F).
c. Using rod with outer diameter of 26 mm (1.02 in), press piston
pins out.
14. Remove main

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NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER BLOCK
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ASSEMBLY
1. Blow air sufficiently to inside coolant passage, oil passage,
crankcase and cylinder bore to remove foreign matter.
2. Install oi

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NISSAN X-TRAIL 2003 Electronic Repair Manual EM-194
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8. Tighten the main bearing cap bolts according to the following
procedure:
a. Apply engine oil to the threaded part and seat surface of each
bolt.
b. Tighten to 25 to

EM-194
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8. Tighten the main bearing cap bolts according to the following
procedure:
a. Apply engine oil to the threaded part and seat surface of each
bolt.
b. Tighten to 25 to 30 N·m (2.5 to 3.1 kg-m, 18 to 22 ft-lb) in the
numerical order shown in the figure.
c. Put alignment marks (with paint) on each bolt and the main
bearing cap, all in the same direction. (When using a protractor)
d. Then, tighten 90°to 95°[target: 90°].
lAlways use either an angle wrench (SST) or protractor
during angular tightening. Avoid tightening based on
visual checks alone.
lAfter tightening bolts to specified torque, make sure that
crankshaft rotates smoothly.
lCheck crankshaft end side clearance. Refer toEM-200,
"CRANKSHAFT SIDE CLEARANCE".
9. Check the outer diameter of connecting rod bolts. Refer toEM-
207, "CONNECTING ROD BOLT DEFORMATION".
10. Install pistons to connecting rod.
a. Using long nose pliers, install snap rings to grooves on piston rear side.
lFit snap rings correctly into grooves.
b. Install pistons to connecting rods.
lUsing industrial dryer, heat pistons up to approx. 60 to 70°C(140to158°F) until piston pin can be
pressed down by finger touch. Then insert piston pins into piston and connecting rod from front side of
piston toward rear.
lAssemble piston and connecting rod with front mark of piston
crown and cylinder No. stamped on connecting rod being
positioned as shown in the figure.
c. Install snap rings to front side of pistons.
lRefertoabovestepaforprecautiononsnapringinstallation.
lAfter installation, check connecting rods for smooth move-
ment.
11. Use piston ring expander to install piston rings.
CAUTION:
When installing, prevent piston from being damaged.
lInstall top ring and second ring with stamped surfaces facing
upward.
lInstall rings so that three closed gap position 120°apart one
another.
lClosed gaps do not need to face in a specific directions, as long as each are positioned 120°apart.
JEM200G
JEM226G
JEM227G
Identification stamp:
To p r i n g : A E
Second ring : AE2
JEM228G

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12. Install connecting rod bearings to connecting rods and caps.
lWhile installing connecting rod bearings, apply engine oil to
bearing surfa

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NISSAN X-TRAIL 2003 Electronic Repair Manual EM-196
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lCheck connecting rod side clearance. Refer toEM-200,
"CONNECTING ROD SIDE CLEARANCE".
16. Force fit rear oil seal into rear oil seal retainer.
lUsing a drift [105 mm

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How to Select Piston and BearingEBS00BPR
DESCRIPTION
lThe identification grade stamped on each part is the grade for the dimension measured i

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NISSAN X-TRAIL 2003 Electronic Repair Manual EM-198
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Piston Selection Table
Unit: mm (in)
HOW TO SELECT CONNECTING ROD BEARING
When Using a New Crankshaft and Connecting Rod
1. Identify the pin diameter grade (No. 0, 1,

EM-198
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Piston Selection Table
Unit: mm (in)
HOW TO SELECT CONNECTING ROD BEARING
When Using a New Crankshaft and Connecting Rod
1. Identify the pin diameter grade (No. 0, 1, or 2) on front surface of
crankshaft.
2. Select the connecting rod bearings of the same grade.
lThere is no grading for the inner diameter of the big end of the
connecting rod.
When Re-using the Removed Crankshaft and Connecting Rod
1. Measure the inner diameter of the big end of the connecting rod and make sure it is within the specified
range.
2. Measure the outer diameter of the crankshaft pin.
3. Determine the crankshaft pin grade by comparing the measurement with the values under the column
“Crankshaft pin outer diameter” of the table below.
4. Choose the bearings of the same grade.
Selection Table of connecting Rod BearinC
Unit: mm (in)
Under Size Bearing Usage
lIf bearing clearance is out of specifications for connecting rod bearings in standard size, use under size
bearings.
lWhen using under size bearings, measure bearing inner diameter with bearing installed, and grind crank-
shaft pins to adjust clearance to specification.
Grade (punched) 1 2 3
Cylinder bore
inner diameter86.000 - 86.010(3.3858 - 3.3862) 86.010 - 86.020(3.3862 - 3.3866) 86.020 - 86.030(3.3866 - 3.3870)
Piston outer
diameter85.925 - 85.935(3.3829 - 3.3833) 85.935 - 85.945(3.3833 - 3.3837) 85.945 - 85.955(3.3837 - 3.3841)
JEM215G
Connecting rod big end inner diameter 55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft pin outer diameter Grade (punched) 0 (no punching)
51.968 - 51.974
(2.0460 - 2.0462)0
lBearing grade No.
lBearing thickness
lOil clearance
lIdentification colorSTD 0
1.492 - 1.496
(0.0587 - 0.0589)
0.031 - 0.061
(0.0012 - 0.0024)
Black
51.961 - 51.968
(2.0457 - 2.0460)1
lBearing grade No.
lBearing thickness
lOil clearance
lIdentification colorSTD 1
1.496 - 1.500
(0.0589 - 0.0591)
0.031 - 0.061
(0.0012 - 0.0024)
Brown
51.954 - 51.961
(2.0454 - 2.0457)2
lBearing grade No.
lBearing thickness
lOil clearance
lIdentification colorSTD 2
1.500 - 1.504
(0.0591 - 0.0592)
0.031 - 0.061
(0.0012 - 0.0024)
Green

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