big end bearings NISSAN ALMERA TINO 2001 Service Repair Manual

SEM588A
When grinding crank pin and crank journal:
+Grind until clearance is within specified standard bearing
clearance.
+Fillets should be finished as shown in the figure. R: 2.3 -
2.5 mm (0.091 - 0.098 in)
Refer to SDS, EM-75 for standard bearing clearance and
available spare parts.
SEM930F
6. If the crankshaft is replaced, select thickness of main bearings
as follows:
a. Grade number of each cylinder block main journal is punched
on the respective cylinder block. These numbers are punched
in either Arabic or Roman numerals.
AEM172
SEM194C
b. Grade number of each crankshaft main journal is punched on
the respective crankshaft. These numbers are punched in
either Arabic or Roman numerals.
c. Select main bearing with suitable thickness according to the
following table.
Main bearing grade color:
Crankshaft main jour-
nal grade numberCylinder block main journal grade number
012
0 Black Brown or Red Green
1 Brown or Red Green Yellow
2 Green Yellow Blue
For example:
Cylinder block main journal grade number: 1
Crankshaft main journal grade number: 2
Main bearing grade number=1+2=Yellow
AEM027
Connecting rod bearing (Big end)NLEM0026S08021. Install connecting rod bearing to connecting rod and cap.
2. Install connecting rod cap to connecting rod.
Tighten bolts to the specified torque.
3. Measure inner diameter ªCº of each bearing.
CYLINDER BLOCKQG
Inspection (Cont'd)
EM-58

JEM216G
Undersize bearing
Unit: mm (in)
Size Thickness
US 0.25 (0.0098) 1.949 - 1.953 (0.0767 - 0.0769)
CAUTION:
When grinding the crankshaft journal to use an undersize
bearing, avoid damaging the fillet R.
AEM027
Connecting Rod Bearing (Big end)NLEM0073S08021. Install connecting rod bearing to connecting rod and cap.
2. Install connecting rod cap to connecting rod.
Tighten bolts to the specified torque.
3. Measure inner diameter ªCº of connecting rod.
Inner diameter:
Standard 55.000 - 55.013 mm (2.1654 - 2.1659 in)
AEM034
4. Measure outer diameter ªDpº of each crankshaft pin journal.
5. Calculate connecting rod bearing clearance.
Connecting rod bearing clearance=CþDp
Standard: 0.031 - 0.061 mm (0.0012 - 0.0024 in)
6. If it exceeds the standard, replace bearing.
JEM215G
When using a new crankshaft and connecting rods:
+Identify the pin diameter grade (No. 0, 1, or 2) on front surface
of crankshaft and select the connecting rod bearings of the
same grade.
+There is no grading for the inner diameter of the big end of the
connecting rod.
When re-using the removed crankshaft and connecting rods:
+Measure the inner diameter of the big end of the connecting
rod and make sure it is within the specified range.
+Measure the outer diameter of the crankshaft pin.
+Determine the crankshaft pin grade by comparing the mea-
surement with the values under the column ªCrankshaft pin
ODº of the table below. Choose the bearings of the same
grade.
Selective fitting for connecting rod bearing
Unit: mm (in)
Connecting rod big end ID 55.000 - 55.013 (2.1654 - 2.1659)
Crankshaft pin OD Grade (punched) 0 (no punching)
CYLINDER BLOCKYD
Inspection (Cont'd)
EM-232