2003 NISSAN TEANA Service Manual

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Page 2353 of 3502

NISSAN TEANA 2003 Service Manual CYLINDER BLOCK
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Inspection After DisassemblyBBS004WD
CRANKSHAFT END PLAY
Measure the clearance between thrust bearings and crankshaft
arm when crankshaft is mov

Page 2354 of 3502

NISSAN TEANA 2003 Service Manual EM-246
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CYLINDER BLOCK

When replacing piston and piston pin assembly, refer to EM-240, "HOW TO SELECT PISTON" .
NOTE:
Piston is available together with piston pin as assembly.
Piston pin (pis

Page 2355 of 3502

NISSAN TEANA 2003 Service Manual CYLINDER BLOCK
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If the measured value exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
re-bore cylinder inner wall and

Page 2356 of 3502

NISSAN TEANA 2003 Service Manual EM-248
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CYLINDER BLOCK

Piston Pin Outer Diameter
Measure the outer diameter of piston pin with micrometer.
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connecti

Page 2357 of 3502

NISSAN TEANA 2003 Service Manual CYLINDER BLOCK
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Measure the distortion on the cylinder block upper face at some
different points in six directions with straightedge and feeler
gauge.
If it ex

Page 2358 of 3502

NISSAN TEANA 2003 Service Manual EM-250
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CYLINDER BLOCK

Piston Skirt Diameter
Measure outer diameter of piston skirt with micrometer.
Piston to Cylinder Bore Clearance
Calculate by piston skirt diameter and cylinder bore inner

Page 2359 of 3502

NISSAN TEANA 2003 Service Manual CYLINDER BLOCK
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CRANKSHAFT PIN JOURNAL DIAMETER
Measure outer diameter of crankshaft pin journal with microme-
ter.
If out of the standard, measure the connect

CYLINDER BLOCK
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CRANKSHAFT PIN JOURNAL DIAMETER
Measure outer diameter of crankshaft pin journal with microme-
ter.
If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-251,
"CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT OUT-OF-ROUND AND TAPER
Measure the dimensions at four different points as shown in the
figure on each main journal and pin journal with micrometer.
Out-of-round is indicated by the difference in the dimensions
between “X” and “Y” at “A” and “B”.
Taper is indicated by the difference in the dimensions 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-252, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-251, "CONNECTING ROD BEARING OIL CLEARANCE" .
CRANKSHAFT RUNOUT
Place V-block on precise flat table, and support the journals on
the both end of crankshaft.
Place dial indicator straight up on the No. 3 journal.
While rotating crankshaft, read the movement of the pointer on
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 connect-
ing rod bearing cap, and tighten connecting rod nuts (VQ23DE)
or connecting rod bolts (VQ35DE) to the specified torque. Refer
to EM-233, "
ASSEMBLY" for the tightening procedure.
Measure the inner diameter of connecting rod bearing with
inside micrometer.
(Bearing oil clearance) = (Connecting rod bearing inner diameter) –
(Crankshaft pin journal diameter)Standard
VQ23DE : 44.956 - 44.974 mm (1.7699 - 1.7706 in) dia.
VQ35DE : 51.956 - 51.974 mm (2.0455 - 2.0462 in) dia.
PBIC0127E
Limit:
Out-of-round (Difference between “X” and “Y”)
: 0.002 mm (0.0001 in)
Taper (Difference between “A” and “B”)
: 0.002 mm (0.0001 in)
SBIA0535E
Standard : Less than 0.05 mm (0.002 in)
Limit : 0.1 mm (0.004 in)
SEM346D
PBIC1642E

Page 2360 of 3502

NISSAN TEANA 2003 Service Manual EM-252
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CYLINDER BLOCK

If calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod big
end diameter and crankshaft pin journal diameter to obtain the

EM-252
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CYLINDER BLOCK

If calculated value exceeds the limit, select proper connecting rod bearing according to connecting rod big
end diameter and crankshaft pin journal diameter to obtain the specified bearing oil clearance. Refer to
EM-241, "
HOW TO SELECT CONNECTING ROD BEARING" .
Method of Using Plastigage
Remove oil and dust on crankshaft pin journal and the surfaces of each bearing completely.
Cut 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 connecting rod bearing cap, and tighten connecting
rod nuts (VQ23DE) or connecting rod bolts (VQ35DE) to the specified torque. Refer to EM-233, "
ASSEM-
BLY" for the tightening procedure.
CAUTION:
Do not rotate crankshaft.
Remove connecting rod bearing cap and bearing, and using
scale on 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 caps,
and tighten main bearing cap bolts with main bearing beam
(VQ35DE) to the specified torque. Refer to EM-233, "
ASSEM-
BLY" for the tightening procedure.
Measure the inner diameter of main bearing with bore gauge.
(Bearing clearance) = (Main bearing inner diameter) – (Crankshaft
main journal diameter)
If calculated value 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 EM-242,
"HOW TO SELECT MAIN BEARING" .
Method of Using Plastigage
Remove oil and dust on crankshaft main journal and the surfaces of each bearing completely.
Cut 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 caps, and tighten main bearing bolts with main
bearing beam (VQ35DE) to the specified torque. Refer to EM-233, "
ASSEMBLY" for the tightening pro-
cedure.
CAUTION:
Do not rotate crankshaft.Standard : 0.034 - 0.059 mm (0.0013 - 0.0023 in)
(actual clearance)
Limit : 0.070 mm (0.0028 in)
PBIC1149E
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
(actual clearance)
Limit : 0.065 mm (0.0026 in)
PBIC1644E

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