NISSAN LATIO 2007 Service Repair Manual

EM-92Revision: June 2006
CYLINDER BLOCK
2007 Versa
CAUTION:
There are two main bearing selection tables. One is for No. 1, 4 and 5 journals and the other is for
No. 2 and 3 journals. Make certain to use the appropriate table. This is due to differences in the
specified clearances.
4. Apply the symbol obtained to the “Main Bearing Grade Table” to select main bearing.
NOTE:
Service part is available as a set of both upper and lower.
Main Bearing Selection Table (No. 1, 4 and 5 journals)
PBIC4078E

CYLINDER BLOCK
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Main Bearing Selection Table (No. 2 and 3 journals)
PBIC4079E

EM-94Revision: June 2006
CYLINDER BLOCK
2007 Versa
Main Bearing Grade Table (All Journals)
Unit: mm (in)
Use Undersize Bearing Usage Guide

When the specified main bearing oil clearance is not obtained with standard size main bearings, use
undersize (US) bearing.

When using undersize (US) bearing, measure the main bearing inner diameter with bearing installed, and
grind main journal so that the main bearing oil clearance satisfies the standard.
CAUTION:
In grinding crankshaft main journal to use undersize bearings,
keep the fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)] (A).
Bearing undersize table
Unit: mm (in) Grade number Thickness Identification color Remarks
0 1.996 - 1.999 (0.0786 - 0.0787) Black
Grade and color are the same
for upper and lower bearings. 1 1.999 - 2.002 (0.0787 - 0.0788) Brown
2 2.002 - 2.005 (0.0788- 0.0789) Green
3 2.005 - 2.008 (0.0789 - 0.0791) Yellow
4 2.008 - 2.011 (0.0791 - 0.0792) Blue
5 2.011 - 2.014 (0.0792 - 0.0793) Pink
6 2.014 - 2.017 (0.0793 - 0.0794) Purple
7 2.017 - 2.020 (0.0794 - 0.0795) White
01UPR 1.996 - 1.999 (0.0786 - 0.0787) Black
Grade and color are different
between upper and lower
bearings. LWR 1.999 - 2.002 (0.0787 - 0.0788) Brown
12UPR 1.999 - 2.002 (0.0787 - 0.0788) Brown
LWR 2.002 - 2.005 (0.0788 - 0.0789) Green
23UPR 2.002 - 2.005 (0.0788- 0.0789) Green
LWR 2.005 - 2.008 (0.0789 - 0.0791) Yellow
34UPR 2.005 - 2.008 (0.0789 - 0.0791) Yellow
LWR 2.008 - 2.011 (0.0791 - 0.0792) Blue
45UPR 2.008 - 2.011 (0.0791 - 0.0792) Blue
LWR 2.011 - 2.014 (0.0792 - 0.0793) Pink
56UPR 2.011 - 2.014 (0.0792 - 0.0793) Pink
LWR 2.014 - 2.017 (0.0793 - 0.0794) Purple
67UPR 2.014 - 2.017 (0.0793 - 0.0794) Purple
LWR 2.017 - 2.020 (0.0794 - 0.0795) White
PBIC3263J
Size Thickness
US 0.25 (0.0098) 2.126 - 2.134 (0.0837 - 0.0840)

CYLINDER BLOCK
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Inspection After DisassemblyEBS00U7Z
CRANKSHAFT END PLAY

Measure the clearance between thrust bearings and crankshaft
arm when crankshaft is moved fully forward or backward with a
dial indicator (A).

If the measured value exceeds the limit, replace thrust bearings,
and measure again. If it still exceeds the limit, replace crank-
shaft also.
CONNECTING ROD SIDE CLEARANCE

Measure the side clearance between connecting rod and crank-
shaft arm with a feeler gauge (A).

If the measured value exceeds the limit, replace connecting rod,
and measure again. If it still exceeds the limit, replace crank-
shaft also.
PISTON TO PISTON PIN OIL CLEARANCE
Piston Pin Hole Diameter
Measure the inner diameter of piston pin hole with an inside
micrometer (A).
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer (A).
Piston to Piston Pin Oil Clearance
(Piston to piston pin oil clearance) = (Piston pin hole diameter) – (Piston pin outer diameter)

If oil clearance is out of the standard, replace piston and piston pin assembly. Standard : 0.10 - 0.26 mm (0.0039 - 0.0102 in)
Limit : 0.30 mm (0.012 in)
PBIC3252J
Standard : 0.20 - 0.35 mm (0.0079 - 0.0138 in)
Limit : 0.40 mm (0.0157 in)
PBIC3251J
Standard: 19.993 - 19.999 mm (0.7871 - 0.7874 in)
PBIC3265J
Standard: 19.989 - 19.995 mm (0.7870 - 0.7872 in)
PBIC3266J
Standard: 0.002 - 0.006 mm (0.0001 - 0.0002 in)

EM-96Revision: June 2006
CYLINDER BLOCK
2007 Versa

When replacing piston and piston pin assembly, refer to EM-99, "Piston to Cylinder Bore Clearance" .
NOTE:

Piston is available together with piston pin as assembly.

Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts,
no grades can be selected. (Only grade “0” is available.)
PISTON RING SIDE CLEARANCE

Measure the side clearance of piston ring and piston ring groove
with a feeler gauge (A).

If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
replace piston also.
PISTON RING END GAP

Make sure that cylinder bore inner diameter is within specification. Refer to EM-99, "Cylinder Bore Inner
Diameter" .

Lubricate with new engine oil to piston (1) and piston ring (2),
and then insert (A) piston ring until middle of cylinder (B) with
piston, and measure piston ring end gap with a feeler gauge (C).

If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
re-bore cylinder and use oversized piston and piston rings.Standard:
Top ring : 0.04 - 0.08 mm (0.002 - 0.003 in)
2nd ring : 0.03 - 0.07 mm (0.001 - 0.003 in)
Oil ring : 0.015 - 0.185 mm (0.001 - 0.007 in)
Limit:
Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.10 mm (0.0039 in)
PBIC3280J
Standard:
Top ring : 0.20 - 0.30 mm (0.008 - 0.012 in)
2nd ring : 0.50 - 0.65 mm (0.020 - 0.026 in)
Oil ring
(rail ring) : 0.15 - 0.45 mm (0.006 - 0.018 in)
Limit:
Top ring : 0.51 mm (0.020 in)
2nd ring : 0.83 mm (0.033 in)
Oil ring
(rail ring): 0.78 mm (0.031 in)
PBIC3267J

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CONNECTING ROD BEND AND TORSION

Check with a connecting rod aligner.

If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BIG END DIAMETER

Install connecting rod cap (1) without connecting rod bearing
installed, and tightening connecting rod bolts to the specified
torque. Refer to EM-81, "
ASSEMBLY" for the tightening proce-
dure.

Measure the inner diameter of connecting rod big end with an
inside micrometer.

If out of the standard, replace connecting rod assembly.
CONNECTING ROD BUSHING OIL CLEARANCE
Connecting Rod Bushing Inner Diameter
Measure the inner diameter of connecting rod bushing with an inside
micrometer (A).
C : Feeler gauge
Bend (A):
Limit: 0.15 mm (0.0059 in) per 100 mm (3.94 in) length
Torsion (B):
Limit: 0.30 mm (0.0118 in) per 100 mm (3.94 in) length
PBIC3268J
2 : Connecting rod
A : Example
B : Measuring direction of inner diameter
Standard: 47.000 - 47.013 mm (1.8504 - 1.8509 in)PBIC3269J
Standard: 20.000 - 20.012 mm (0.7874 - 0.7879 in)
PBIC3270J

EM-98Revision: June 2006
CYLINDER BLOCK
2007 Versa
Piston Pin Outer Diameter
Measure the outer diameter of piston pin with a micrometer (A).
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecting rod bushing inner diameter) – (Piston pin outer diame-
ter)

If the measured value is out of the standard, replace connecting rod assembly and/or piston and piston pin
assembly.

If replacing piston and piston pin assembly, refer to EM-95, "PISTON TO PISTON PIN OIL CLEARANCE"
.

If replacing connecting rod assembly, refer to EM-98, "Connecting Rod Bushing Oil Clearance" to select
connecting rod bearing.
CYLINDER BLOCK TOP SURFACE DISTORTION

Using a scraper, remove gasket on the cylinder block surface, and also remove engine oil, scale, carbon,
or other contamination.
CAUTION:
Be careful not to allow gasket flakes to enter engine oil or engine coolant passages.

Measure the distortion on the cylinder block upper face at some
different points in six directions with a straight edge (A) and
feeler gauge (B).

If it exceeds the limit, replace cylinder block.
MAIN BEARING HOUSING INNER DIAMETER

Install main bearing cap without main bearings installed, and tighten main bearing cap bolts to the speci-
fied torque. Refer to EM-81, "
ASSEMBLY" for the tightening procedure.

Measure the inner diameter of main bearing housing with a bore gauge. Standard: 19.989 - 19.995 mm (0.7870 - 0.7872 in)
PBIC3266J
Standard : 0.005 - 0.023 mm (0.0002 - 0.0009 in)
Limit : 0.03 mm (0.0012 in)
Limit: 0.1 mm (0.004 in)
PBIC3250J

CYLINDER BLOCK
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Measure the position shown [5 mm (0.20 in)] backward from
main bearing housing front side in the 2 directions as shown.
The smaller one is the measured value.

If out of the standard, replace cylinder block and main bearing
caps assembly.
NOTE:
Main bearing caps cannot be replaced as a single, because it is machined together with cylinder block.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter

Using a bore gauge (A), measure the cylinder bore for wear, out-
of-round and taper at six different points on each cylinder. (“X”
and “Y” directions at “A”, “B” and “C”) (“Y” is in longitudinal direc-
tion of engine)
NOTE:
When determining cylinder bore grade, measure the cylinder
bore “X” direction at “B” position.

If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, replace cylinder block.
NOTE:
Oversize piston is not provided.
Piston Skirt Diameter
Measure the outer diameter of piston skirt with a micrometer (A).
Piston to Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bore inner diameter (direction “X”, position “B”).
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter)
1 : Cylinder block
2 : Main bearing cap
: Engine front
Standard: 55.997 - 56.017 mm (2.2046 - 2.2054 in)
PBIC4005E
Standard inner diameter:
84.000 - 84.020 mm (3.3071 - 3.3079 in)
Out-of-round (Difference between “X” and “Y”):
0.015 mm (0.0006 in)
Taper limit (Difference between “A” and “C”):
0.01 mm (0.0004 in)
PBIC4014E
Measure point
: Distance from the top 39.9 mm (1.571 in)
Standard
: 83.970 - 83.990 mm (3.3059 - 3.3067 in)
PBIC3272J
Standard : 0.020 - 0.040 mm (0.0008 - 0.0016 in)
Limit : 0.08 mm (0.0031 in)

EM-100Revision: June 2006
CYLINDER BLOCK
2007 Versa

If it exceeds the limit, replace piston and piston pin assembly and/or cylinder block. Refer to EM-87,
"HOW TO SELECT PISTON" .
CRANKSHAFT MAIN JOURNAL DIAMETER

Measure the outer diameter of crankshaft main journals with a
micrometer (A).

If out of the standard, measure the main bearing oil clearance.
Then use undersize bearing. Refer to EM-101, "
MAIN BEARING
OIL CLEARANCE" .
CRANKSHAFT PIN JOURNAL DIAMETER

Measure the outer diameter of crankshaft pin journal with a micrometer.

If out of the standard, measure the connecting rod bearing oil clearance. Then use undersize bearing.
Refer to EM-101, "
CONNECTING ROD BEARING OIL CLEARANCE" .
OUT-OF-ROUND AND TAPER OF CRANKSHAFT

Measure the dimensions at four different points as shown on
each main journal and pin journal with a micrometer.

Out-of-round is indicated by the difference in dimensions
between “X” and “Y” at “A” and “B”.

Taper is indicated by the difference in dimension between “A”
and “B” at “X” and “Y”.

If the measured value exceeds the limit, correct or replace crankshaft.

If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then
select main bearing and/or connecting rod bearing. Refer to EM-101, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-101, "CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT RUNOUT

Place a V-block on a precise flat table to support the journals on
the both end of the crankshaft.

Place a dial indicator (A) straight up on the No. 3 journal.

While rotating crankshaft, read the movement of the pointer on
the dial indicator. (Total indicator reading)

If it exceeds the limit, replace crankshaft.Standard: 51.959 - 51.979 mm (2.0456 - 2.0464 in) dia.
PBIC3457J
Standard: 43.953 - 43.971 mm (1.7304-1.7311 in) dia.
Limit:
Out-of-round (Difference between “X” and “Y”)
: 0.0035 mm (0.0001 in)
Taper (Difference between “A” and “B”)
: 0.0035 mm (0.0001 in)
PBIC3459J
Standard : 0.05 mm (0.0020 in)
Limit : 0.10 mm (0.0040 in)
PBIC3458J

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CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation

Install connecting rod bearings (2) to connecting rod (3) and
connecting rod bearing cap (1), and tighten connecting rod bolts
to the specified torque. Refer to EM-81, "
ASSEMBLY" for tight-
ening procedure.

Measure the inner diameter of connecting rod bearing with an
inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diame-
ter) – (Crankshaft pin journal diameter)

If clearance exceeds the limit, select proper connecting rod bearing according to connecting rod big end
diameter and crankshaft pin journal diameter to obtain specified bearing oil clearance. Refer to EM-88,
"HOW TO SELECT CONNECTING ROD BEARING" .
Method of Using Plastigage

Remove engine oil and dust on crankshaft pin and the surfaces of each bearing completely.

Cut a plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding
oil holes.

Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the speci-
fied torque. Refer to EM-81, "
ASSEMBLY" for the tightening procedure.
CAUTION:
Never rotate crankshaft.

Remove connecting rod cap and bearing, and using the scale
(A) on the plastigage bag, measure the plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the “Method by Calculation”.
MAIN BEARING OIL CLEARANCE
Method by Calculation

Install main bearings (3) to cylinder block (1) and main bearing
cap (2), and tighten main bearing cap bolts to the specified
torque. Refer to EM-81, "
ASSEMBLY" for the tightening proce-
dure.

Measure the inner diameter of main bearing with a bore gauge.
(Bearing oil clearance) = (Main bearing inner diameter) – (Crank-
shaft main journal diameter)
A : Example
B : Inner diameter measuring direction
Standard : 0.037 - 0.047 mm (0.0015 - 0.0019 in)
Limit : 0.07 mm (0.0028 in)
PBIC3275J
PBIC3276J
A : Example
B : Inner diameter measuring direction
Standard:
No. 1, 4 and 5 journals
: 0.024 - 0.034 mm (0.0009 - 0.0013 in)
No. 2 and 3 journalsPBIC3277J