2003 NISSAN X-TRAIL Electronic Repair Manual

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Page 2169 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER BLOCK
EM-199
[YD22DDTi]
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Connecting Rod Bearing Under Size lLst
Unit: mm (in)
CAUTION:
When grinding the crankshaft journal to use an under size bear-
ing, avoid dama

CYLINDER BLOCK
EM-199
[YD22DDTi]
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Connecting Rod Bearing Under Size lLst
Unit: mm (in)
CAUTION:
When grinding the crankshaft journal to use an under size bear-
ing, avoid damaging the fillet R.
HOW TO SELECT MAIN BEARING
When Using a New Cylinder Block and Crankshaft
1. Identify the bearing housing grade (No. 0, 1, or 2) on LH surface
at the rear of the cylinder block, and locate the applicable grade
on the “Grade” row in the table below.
2. Identify the journal grade (No. 0, 1, or 2) on the front surface of
the crankshaft, and locate the applicable grade under the
“Grade” column on the table.
3. Themainbearingtobeused(STD0toSTD4)canbelocated
in the cell where the row and column cross.
When Re-using Removed Cylinder Block and Crankshaft
1. Measure the inner diameter of cylinder block main bearing hous-
ing.
2. Locate the applicable cell where the measurement falls, on
“Inner diameter of Cylinder block main bearing housing” row on
the table.
3. Measure the outer diameter of the crankshaft journal.
4. Locate the applicable cell where the measurement falls, under
“Crankshaft journal outer diameter” column on the table.
5. Themainbearingtobeused(STD0toSTD4)canbelocatedin
the cell where the row and column cross.
Main Bearing Grade Table
Unit: mm (in) Size Thickness
US 0.08 (0.0031) 1.536 - 1.540 (0.0605 - 0.0606)
US 0.12 (0.0047) 1.556 - 1.560 (0.0613 - 0.0614)
US 0.25 (0.0098) 1.621 - 1.625 (0.0638 - 0.0640)
Standard dimension R : 1.5 - 1.7 mm (0.0591 - 0.0669 in)JEM216G
JEM208G
JEM215G
Inner diameter of Cylinder block main bearing housing66.654 - 66.663
(2.6242 - 2.6245)66.663 - 66.672
(2.6245 - 2.6249)66.672 - 66.681
(2.6249 - 2.6252)
Crankshaft journal
outer diameterGrade
(punched)012
62.967 - 62.975
(2.4790 - 2.4793)0
lBearing grade No.
lBearing thickness
lOil clearance
lIdentification colorSTD 0
1.816 - 1.820
(0.0715 - 0.0717)
0.039 - 0.066
(0.0015 - 0.0026)
BlackSTD 1
1.820 - 1.824
(0.0717 - 0.0718)
0.039 - 0.066
(0.0015 - 0.0026)
Red or BrownSTD 2
1.824 - 1.828
(0.0718 - 0.0720)
0.039 - 0.066
(0.0015 - 0.0026)
Green

Page 2170 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EM-200
[YD22DDTi]
CYLINDER BLOCK
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 b

EM-200
[YD22DDTi]
CYLINDER BLOCK
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 journals to adjust clearance to specification.
Main Bearing Under Size List
Unit: mm (in)
CAUTION:
When grinding crank journals to use undersize bearings, keep
corners radius of fillet. (All journals)
Inspection After DisassemblyEBS00CU2
CRANKSHAFT SIDE CLEARANCE
lUsing dial indicator, measure crankshaft travel amount by mov-
ing the crankshaft forward or backward.
lIf the value exceeds the limit, replace thrust bearings with new
ones and measure again.
If the measurement exceeds the limit again, replace crankshaft
with a new one.
CONNECTING ROD SIDE CLEARANCE
lUsing feeler gauge, measure side clearance between connect-
ing rod and crankshaft arm.
lIf measured value exceeds the limit, replace connecting rod and
repeat measurement.
If measured value still exceeds the limit, replace crankshaft.
62.959 - 62.967
(2.4787 - 2.6790)1
lBearing grade No.
lBearing thickness
lOil clearance
lIdentification colorSTD 1
1.820 - 1.824
(0.0717 - 0.0718)
0.039 - 0.066
(0.0015 - 0.0026)
BrownSTD 2
1.824 - 1.828
(0.0718 - 0.0720)
0.039 - 0.066
(0.0015 - 0.0026)
GreenSTD 3
1.828 - 1.832
(0.0720 - 0.0721)
0.039 - 0.066
(0.0015 - 0.0026)
Yellow
62.951 - 62.959
(2.4784 - 2.4787)2
lBearing grade No.
lBearing thickness
lOil clearance
lIdentification colorSTD 2
1.824 - 1.828
(0.0718 - 0.0720)
0.039 - 0.066
(0.0015 - 0.0026)
GreenSTD 3
1.828 - 1.832
(0.0720 - 0.0721)
0.039 - 0.066
(0.0015 - 0.0026)
YellowSTD 4
1.832 - 1.836
(0.0721 - 0.0723)
0.039 - 0.066
(0.0015 - 0.0026)
Blue
Size Thickness
US 0.25(0.0098) 1.949 - 1.953 (0.0767 - 0.0769)
Standard dimension R : 1.5 - 1.7 mm (0.0591 - 0.0669 in)
JEM216G
Standard : 0.10 - 0.25 mm (0.0039 - 0.0098 in)
Limit : 0.30 mm (0.0118 in)
JEM202G
Standard : 0.200 - 0.350(0.0079 - 0.0138 in)
Limit : 0.4 mm (0.0157 in)
JEM203G

Page 2171 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER BLOCK
EM-201
[YD22DDTi]
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PISTON TO PISTON PIN CLEARANCE
Piston Pin Hole Inner Diameter
Using inside micrometer, measure piston pin hole inner diameter.
Piston Pin Out

Page 2172 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EM-202
[YD22DDTi]
CYLINDER BLOCK
PISTON RING END GAP
lCheck that cylinder bore diameter is within specifications.
Refer toEM-204, "
PISTON TO CYLINDER BORE CLEAR-
ANCE".
lUsing piston, press piston ri

Page 2173 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER BLOCK
EM-203
[YD22DDTi]
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CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Connecting Rod Small End Inner Diameter
Use inside micrometer to measure small end inner dia

Page 2174 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EM-204
[YD22DDTi]
CYLINDER BLOCK
MAIN BEARING HOUSING INNER DIAMETER
lWithout installing main bearings, install main bearing caps, and
tighten bolts to the specified torque.
lMeasure the inner diamete

Page 2175 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual CYLINDER BLOCK
EM-205
[YD22DDTi]
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lIf out of specification, replace piston and piston pin assembly. Refer toEM-197, "HOW TO SELECT PIS-
TON".
Reboring cylinder
1. Determine cy

Page 2176 of 3066

NISSAN X-TRAIL 2003 Electronic Repair Manual EM-206
[YD22DDTi]
CYLINDER BLOCK
CRANKSHAFT RUNOUT
lPlace V-block onto surface plate to support journals at both ends
of crankshaft.
lPosition dial indicator vertically onto No. 3 journal.
lRotate cra

EM-206
[YD22DDTi]
CYLINDER BLOCK
CRANKSHAFT RUNOUT
lPlace V-block onto surface plate to support journals at both ends
of crankshaft.
lPosition dial indicator vertically onto No. 3 journal.
lRotate crankshaft to read needle movement on dial indicator.
(Total indicator reading)
CONNECTING ROD BEARING OIL CLEARANCE
Method by measurement
lInstall connecting rod bearings to connecting rods and caps, and
tighten connecting nuts to the specified torque. Use inside
micrometer to measure connecting rod bearing inner diameter.
(Bearing clearance) = (Connecting rod bearing inner diameter)-
(Crankshaft pin outer diameter)
lIf out of specifications, check connecting rod big end inner diam-
eter and crankshaft pin outer diameter, and select appropriate
connecting rod bearing to adjust clearance to specifications.
Refer toEM-198, "
HOW TO SELECT CONNECTING ROD
BEARING".
Method using plastigage
lRemove contamination such as oil, dust completely from crank-
shaft pins and each bearing surface.
lCut plastigage slightly shorter than bearing width, place it in
crankshaft direction, avoiding oil holes.
lInstall connecting rod bearings to caps, and tighten connecting
rod nuts to the specified torque.
CAUTION:
Never rotate crankshaft.
lRemove connecting rod caps and bearings, and measure plasti-
gage width using scale on plastigage bag.
CAUTION:
If out of specification, take same action mentioned in “Method by measurement”.
MAIN BEARING OIL CLEARANCE
Method by measurement
lInstall main bearings to the cylinder block and bearing cap, and tighten the bolts to the specified torque.
Then, measure the inner diameter of the main bearings.
(Bearing clearance) = (Bearing inner diameter)-(Crankshaft journal outer diameter)
lIf out of specification, check main bearing housing inner diameter and crankshaft journal outer diameter,
and select appropriate main bearing to adjust clearance to specifications. Refer toEM-199, "
HOW TO
SELECT MAIN BEARING". Standard : 0.05 mm (0.0020 in)
Limit : 0.10 mm (0.0039 in)
FEM116
Standard : 0.031 - 0.061 mm (0.0012 - 0.0024 in)
PBIC0119E
EM142
Standard : 0.039 - 0.066 mm (0.0015 - 0.0026 in)

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