Nissan Tiida C11. Instruction — part 690
EM-112
< DISASSEMBLY AND ASSEMBLY >
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CYLINDER BLOCK
Cylinder Bore Inner Diameter
• Using a bore gauge, 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 direction of
the engine)
NOTE:
When determining cylinder bore grade, measure cylinder bore 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:
There is no service setting for oversized piston.
Piston Skirt Diameter
Measure the outer diameter of piston skirt with a micrometer.
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)
• If it exceeds the limit, replace piston and piston pin assembly and/or cylinder block.
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.
A
: Unit: mm (in)
Standard:
Cylinder bore inner diameter
: Refer to
.
Limit:
Out-of-round (Difference between“X”and“Y”)
Taper (Difference between“A”and“B”
: Refer to
.
PBIC3767E
Standard
: Refer to
.
PBIC0125E
Standard and Limit
: Refer to
.
Standard
: Refer to
.
PBIC3457J
CYLINDER BLOCK
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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.
OUT-OF-ROUND AND TAPER OF CRANKSHAFT
• Measure the dimensions at four different points as shown in the
figure 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.
CRANKSHAFT RUNOUT
• Place a V-block on a precise flat table to support the journals on
the both end of 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.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
• Install connecting rod bearings to connecting rod and cap, and tighten connecting rod bolts to the specified
EM-101, "Disassembly and Assembly"
.
• Measure the inner diameter of connecting rod bearing with an
inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter)
– (Crankshaft pin journal diameter)
• If the clearance exceeds the limit, select proper connecting rod
bearing according to connecting rod big end diameter and crank-
shaft pin journal diameter to obtain the specified bearing oil clear-
ance. Refer to
EM-117, "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 specified
EM-101, "Disassembly and Assembly"
.
CAUTION:
Standard
: Refer to
.
Limit:
Out-of-round (Difference between“X”and“Y”)
Taper (Difference between“A”and“B”)
: Refer to
.
PBIC3459J
Limit
: Refer to
.
PBIC3458J
Standard and Limit
: Refer to
EM-130, "Connecting Rod Bearing"
.
PBIC1642E
EM-114
< DISASSEMBLY AND ASSEMBLY >
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CYLINDER BLOCK
Never rotate crankshaft.
• Remove connecting rod cap and bearing, and using the scale 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 to cylinder block and main bearing cap, and tighten main bearing cap bolts to the spec-
ified torque. Refer to
EM-101, "Disassembly and Assembly"
.
• Measure the inner diameter of main bearing with a bore gauge.
(Bearing oil clearance) = (Main bearing inner diameter) – (Crank-
shaft main journal diameter)
• If the clearance exceeds the limit, select proper main bearing
according to main bearing inner diameter and crankshaft main
journal diameter to obtain the specified bearing oil clearance.
Refer to
Method of Using Plastigage
• Remove engine oil and dust on crankshaft main journal 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 main bearings to cylinder block and main bearing cap, and tighten main bearing cap bolts to the spec-
ified torque. Refer to
EM-101, "Disassembly and Assembly"
.
CAUTION:
Never rotate crankshaft.
• Remove main bearing cap and bearings, and using the scale 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 CRUSH HEIGHT
PBIC1149E
Standard
: Refer to
.
PBIC1644E
PBIC1149E
CYLINDER BLOCK
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• When main bearing cap is removed after being tightened to the
specified torque with main bearings installed, the tip end of bearing
must protrude. Refer to
EM-101, "Disassembly and Assembly"
• If the standard is not met, replace main bearings.
CONNECTING ROD BEARING CRUSH HEIGHT
• When connecting rod bearing cap is removed after being tightened
to the specified torque with connecting rod bearings installed, the
tip end of bearing must protrude. Refer to
.
• If the standard is not met, replace connecting rod bearings.
MAIN BEARING CAP BOLT OUTER DIAMETER
• Measure the outer diameters (“d
1
”, “d
2”
) at two positions as shown
in the figure.
• If reduction appears in a position other than “d
2 ”
, regard it as “d
2”
.
• If it exceeds the limit (a large difference in dimensions), replace
main bearing cap bolt with a new one.
CONNECTING ROD CAP BOLT OUTER DIAMETER
• Measure the outer diameter “d” at position as shown in the figure.
• If reduction appears in a position other than “d”, regard it as “d”.
• When “d” falls below the limit (when it becomes thinner), replace
connecting rod cap bolt with a new one.
FLYWHEEL DEFLECTION
Standard: There must be crush height.
SEM502G
Standard: There must be crush height.
PBIC1646E
Limit (“d
1
”–“d
2
”): 0.2 mm (0.008 in)
PBIC3768E
Limit: 7.75 mm (0.3051 in)
PBIC3769E
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