2008 NISSAN TEANA Service Manual

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Page 1993 of 5121

NISSAN TEANA 2008 Service Manual EM-118
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Press-fit pilot converter with its chamfer facing crankshaft as
shown in the figure.
18. Install knock sensors.
VQ25DE
- Install knock sensor so

Page 1994 of 5121

NISSAN TEANA 2008 Service Manual CYLINDER BLOCK
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Install drive plate (2) and reinforcement plate (3) as shown in
the figure.
Holding ring gear with the pulley hol

Page 1995 of 5121

NISSAN TEANA 2008 Service Manual EM-120
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
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

Page 1996 of 5121

NISSAN TEANA 2008 Service Manual CYLINDER BLOCK
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Check with a connecting rod aligner.
If it exceeds the limit, replace connecting rod assembly.
CONNECTING ROD BIG

Page 1997 of 5121

NISSAN TEANA 2008 Service Manual EM-122
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
Measure the outer diameter of piston pin with a micrometer (A).
Connecting Rod Bushing Oil Clearance
(Connecting rod bushing oil clearance) = (Connec

Page 1998 of 5121

NISSAN TEANA 2008 Service Manual CYLINDER BLOCK
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Unit: mm (in)
*: After installing in connecting rod
CYLINDER BLOCK DISTORTION
Using a scraper, remove gasket on the

Page 1999 of 5121

NISSAN TEANA 2008 Service Manual EM-124
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or rebore the inner
wall.
Ove

EM-124
< DISASSEMBLY AND ASSEMBLY >
CYLINDER BLOCK
If the measured value exceeds the limit, or if there are scratches
and/or seizure on the cylinder inner wall, hone or rebore the inner
wall.
Oversize piston is provided. When using oversize piston, rebore
cylinder so that the clearance of the piston to cylinder bore satis-
fies the standard.
CAUTION:
When using oversize piston, use oversize pistons for all cylin-
ders with oversize piston rings.
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 (B), position (D)].
(Clearance) = (Cylinder bore inner diameter) – (Piston skirt diameter).
If the calculated value exceeds the limit, replace piston and piston pin assembly. Refer to EM-129, "
Piston".
Reboring Cylinder Bore
1. Cylinder bore size is determined by adding piston to cylinder bore clearance to piston skirt diameter.
2. Install main bearing caps and main bearing beam, and tighten to the specified torque. Otherwise, cylinder
bores may be distorted in final assembly.
3. Cut cylinder bores.
NOTE:
When any cylinder needs boring, all other cylinders must also be bored.
Do not cut too much out of cylinder bore at a time. Cut only 0.05 mm (0.0020 in) or so in diameter at a
time.
4. Hone cylinders to obtain the specified piston to cylinder bore clearance.
5. Measure finished cylinder bore for the out-of-round and taper.
NOTE:
Measurement should be done after cylinder bore cools down.
CRANKSHAFT MAIN JOURNAL DIAMETER
Measure the outer diameter of crankshaft main journals with a micrometer. Oversize (O/S) : 0.2 mm (0.008 in)
SEM843E
Measure point
: Refer to EM-143, "CylinderBlock".
Standard
JPBIA0227ZZ
Standard and limit : Refer to EM-143, "CylinderBlock".
Rebored size calculation: D = A + B – C
where,
A: Piston skirt diameter as measured
B: Piston to cylinder bore clearance (standard value)
C: Honing allowance 0.02 mm (0.0008 in)
D: Bored diameter
Standard : Refer to EM-143, "
CylinderBlock".

Page 2000 of 5121

NISSAN TEANA 2008 Service Manual CYLINDER BLOCK
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If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to EM-
132, "Main

CYLINDER BLOCK
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If out of the standard, measure the main bearing oil clearance. Then use undersize bearing. Refer to EM-
132, "MainBearing".
CRANKSHAFT PIN JOURNAL DIAMETER
Measure the outer diameter of crankshaft pin journal with a
micrometer (A).
If out of the standard, measure the connecting rod bearing oil
clearance. Then use undersize bearing. Refer to EM-130,
"ConnectingRodBearing".
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 a micrometer.
Out-of-round is indicated by the difference in the dimensions
between (d) and (c) at (a) and (b).
Taper is indicated by the difference in the dimensions between.
If the measured value exceeds the limit, correct or replace crank-
shaft.
If corrected, measure the bearing oil clearance of the corrected
main journal and/or pin journal. Then select the main bearing and/
or connecting rod bearing. Refer to EM-132, "
MainBearing" and/
or EM-130, "
ConnectingRodBearing".
CRANKSHAFT RUNOUT
Place V-block on precise flat table, and support the journals on the both end of crankshaft.
Place a dial indicator straight up on the No. 3 journal.
While rotating crankshaft, read the movement of the pointer on a
dial indicator. (Total indicator reading)
If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE
Method by Calculation
Install connecting rod bearings (1) to connecting rod (2) and con-
necting rod cap, and tighten connecting rod bolts to the specified
torque. Refer to EM-110, "
Disassembly and Assembly" for the
tightening procedure.
Measure the inner diameter of connecting rod bearing with an
inside micrometer.
(Oil clearance) = (Connecting rod bearing inner diameter) – (Crank-
shaft pin journal diameter)Standard : Refer to EM-143, "
CylinderBlock".
JPBIA0228ZZ
Limit : Refer to EM-143, "CylinderBlock".
JPBIA0229ZZ
Standard and limit : Refer to EM-143, "CylinderBlock".
SEM346D
Standard and limit : Refer to EM-147,
"ConnectingRodBearing".JPBIA0230ZZ

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