Nissan Altima L32. Instruction — part 640
EM-96
< DISASSEMBLY AND ASSEMBLY >
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HOW TO SELECT PISTON AND BEARING
1. "Main Bearing Selection Table" rows correspond to bearing
housing grade on rear left side of cylinder block.
• If there is a corrected stamp mark on the cylinder block, use it
as a correct reference.
2. Apply journal diameter grade (A) stamped on crankshaft front
side to column in "Main Bearing Selection Table".
• Pin diameter grade (B)
3. Find value at crossing of row and column in "Main Bearing Selection Table".
CAUTION:
• There are two main bearing selection tables. One is for odd-numbered journals (1, 3, and 5) and
the other is for even-numbered journals (2 and 4). Make certain to use the appropriate table. This
is due to differences in the specified clearances.
4. Apply the symbol obtained to "Main Bearing Grade Table" to select.
NOTE:
• Service parts are available as a set of both upper and lower.
When Cylinder Block and Crankshaft are Reused:
1. Measure inner diameter of cylinder block main bearing housing and outer diameter of crankshaft journal.
2. Apply measurement in above step 1 to the "Main Bearing Selection Table".
3. Follow steps 3 and 4 in "When New Cylinder Block and Crankshaft are Used".
SBIA0283E
AWBIA0017ZZ
HOW TO SELECT PISTON AND BEARING
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Main Bearing Selection Table (No.1, 3, and No.5 journals)
KBIA0149E
EM-98
< DISASSEMBLY AND ASSEMBLY >
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HOW TO SELECT PISTON AND BEARING
Main Bearing Selection Table (No.2,and 4 journals)
Main Bearing Grade Table (All Journals) Refer to
.
Use Undersize Bearing Usage Guide
• Use undersize (U.S.) bearing when oil clearance with standard size main bearing is not within specification.
• When using undersize (U.S.) bearing, measure the bearing inner diameter with the bearing installed and
grind journal until 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 an undersize bearing (all journals).
KBIA0150E
Size U.S.
Thickness
0.25 (0.0098)
2.106 - 2.114 (0.0829 - 0.0832)
KBIA0148E
SERVICE DATA AND SPECIFICATIONS (SDS)
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SERVICE DATA AND SPECIFICATIONS (SDS)
SERVICE DATA AND SPECIFICATIONS (SDS)
Standard and Limit
INFOID:0000000004202137
GENERAL SPECIFICATIONS
DRIVE BELTS
INTAKE MANIFOLD AND EXHAUST MANIFOLD
Unit: mm. (in)
SPARK PLUG
Unit: mm. (in)
Cylinder arrangement
In-line 4
Displacement cm
3
(in
3
)
2,488 (151.82)
Bore and stroke mm. (in)
89.0 x 100 (3.50 x 3.94)
Valve arrangement
DOHC
Firing order
1-3-4-2
Number of piston rings
Compression
2
Oil
1
Compression ratio
9.5:1
Compression pressure
kPa (kg/cm
2
, psi) / 250 rpm
Standard
1,250 (12.8, 181.3)
Minimum
1,060 (10.8, 153.7)
Differential limit between cylinders
100 (1.0, 14)
Valve timing
Unit: degree
a
b
c
d
e
f
220
°
232
°
-12
°
64
°
10
°
30
°
PBIC0187E
Tension of drive belts
Auto adjustment by auto tensioner
Surface distortion
Description
Limit
Intake manifold adapter
0.1 (0.004)
Intake manifold
0.1 (0.004)
Exhaust manifold
0.3 (0.012)
Make
NGK
Type
Standard
DILKAR6A-11
Gap (nominal)
1.1 (0.043)
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