Engine block NISSAN TEANA 2003 Repair Manual

CYLINDER BLOCK
EM-83
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A widely use engine stand can be used.
CAUTION:
Use engine stand that has a load capacity [approximately
150 kg (331 lb) or more] large enough for supporting the
engine weight.
NOTE:
This example is an engine stand for holding at transaxle
mounting side with drive plate removed.
3. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
4. Drain engine coolant by removing water drain plug from inside of
engine.
5. Remove cylinder head. Refer to EM-65, "
CYLINDER HEAD" .
6. Remove knock sensor.
CAUTION:
Carefully handle knock sensor avoiding shocks.
7. Remove crankshaft position sensor (POS).
CAUTION:

Avoid impacts such as a dropping.

Do not disassemble.

Keep it away from metal particles.

Do not place sensor in a location where it is exposed to
magnetism.
8. Remove drive plate.

Secure drive plate with stopper plate, and remove mounting
bolts.
NOTE:
Use TORX socket (size E20).
CAUTION:
Be careful not to damage or scratch drive plate.
PBIC0085E
PBIC2443E
PBIC2191E
PBIC2352E

EM-86
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CYLINDER BLOCK

CAUTION:

Be careful not damage or deform signal plate mounted on
crankshaft.

When setting crankshaft on a flat floor surface, use a
block of wood to avoid interference between signal plate
and the floor surface.

Do not remove signal plate unless it is necessary to do
so.
NOTE:
When removing or installing signal plate, use TORX socket (size
T30).
17. Pull rear oil seal out from rear end of crankshaft.
CAUTION:
Be careful not to damage crankshaft.
NOTE:
When replacing rear oil seal without removing lower cylinder block, use screwdriver to pull it out from
between crankshaft and cylinder block.
18. Remove main bearings and thrust bearings from cylinder block and lower cylinder block.
CAUTION:
Identify installation positions, and store them without mixing them up.
ASSEMBLY
1. Fully air-blow engine coolant and engine oil passages in cylinder block, cylinder bore and crankcase to
remove any foreign material.
CAUTION:
Use a goggles to protect your eye.
2. Install each plug to cylinder block as shown in the figure.

Apply liquid gasket to the thread of water drain plug “A”.
Use Genuine Liquid Gasket or equivalent.

Apply liquid gasket to the thread of plug “C”.
Use Anaerobic Liquid Gasket or equivalent.

Tighten each plug as specified below.
NOTE:
Do not apply liquid gasket to the thread of plug “B”.
3. Install main bearings and thrust bearings with the following procedure:
a. Remove dust, dirt, and engine oil on the bearing mating surfaces of cylinder block and lower cylinder
block.
b. Install thrust bearings to the both sides of the No. 3 journal hous-
ing on cylinder block.

Install thrust bearings with the oil groove facing crankshaft
arm (outside).
SBIA0275E
Part Washer Tightening torque
A No 9.8 N·m (1.0 kg-m, 87 in-lb)
B Yes 53.9 N·m (5.5 kg-m, 40 ft-lb)
C Yes 62.8 N·m (6.4 kg-m, 46 ft-lb)
PBIC2626E
PBIC0264E

CYLINDER BLOCK
EM-87
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c. Install main bearings paying attention to the direction.

Main bearing with an oil hole and groove goes on cylinder
block. The one without them goes on lower cylinder block.

Only main bearing (on cylinder block) for No. 3 journal has dif-
ferent specifications.

Before installing main bearings, apply new engine oil to the
bearing surface (inside). Do not apply engine oil to the back
surface, but thoroughly clean it.

When installing, align main bearing stopper to the notch.

Ensure the oil holes on cylinder block and those on the corre-
sponding bearing are aligned.
4. Install signal plate to crankshaft if removed.
a. Position crankshaft and signal plate using dowel pin, and tighten
mounting bolts.
NOTE:

Dowel pin of crankshaft and signal plate is provided as a set
for each. If dowel pin is not available (when reusing crank-
shaft and signal plate), use M6 bolt [length 10 mm (0.39 in) or
more] as a substitute.

Figure shows an example of type 1.
b. Remove dowel pin.
CAUTION:
Be sure to remove dowel pin.
5. Install crankshaft to cylinder block.

While turning crankshaft by hand, make sure that it turns smoothly.
CAUTION:
Do not install rear oil seal yet.
6. Inspect outer diameter of lower cylinder block mounting bolts. Refer to EM-107, "
LOWER CYLINDER
BLOCK MOUNTING BOLT OUTER DIAMETER" .
7. Install lower cylinder block with the following procedure:
a. Apply liquid gasket with tube presser [SST: WS39930000] to
lower cylinder block as shown in the figure.
Use Genuine Liquid Gasket or equivalent.
CAUTION:
After liquid gasket is applied, rear oil seal installation must
be finished within 5 minutes. Therefore, the following pro-
cedure must be performed quickly.
NOTE:
Lower cylinder block cannot be replaced as a single part,
because it is machined together with cylinder block.
b. Tighten lower cylinder block mounting bolts with the following procedure:
i. Apply new engine oil to threads and seat surfaces of mounting bolts.
PBIC2193E
A : Signal plate
B : Crank shaft
C : Dowel pin (used to position the signal plate)
PBIC4436J
SBIA0279E

EM-88
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CYLINDER BLOCK

ii. Tighten M8 bolts in numerical order from No. 11 to 22 in the fig-
ure.
CAUTION:
Wipe off completely any protruding liquid gasket on rear oil
seal installation surface.
NOTE:
There are more processes to complete the tightening of mount-
ing bolts. However stop procedure here to install rear oil seal.
c. Install rear oil seal. Refer to EM-64, "
Removal and Installation of Rear Oil Seal" .
d. Restart tightening of lower cylinder block bolts with the following procedure:
i. Tighten M10 bolts in numerical order from No. 1 to 10 in the fig-
ure.
ii. Turn M10 bolts 60 degrees clockwise (angle tightening) in
numerical order from No. 1 to 10 in the figure.
CAUTION:
Check and confirm the tightening angle by using angle
wrench (SST) or protractor. Avoid judgment by visual
inspection without the tool.

After installing mounting bolts, make sure that crankshaft can be rotated smoothly by hand.

Wipe off completely any protruding liquid gasket on front side of engine.

Check crankshaft end play. Refer to EM-99, "CRANKSHAFT END PLAY" .
8. Install piston to connecting rod with the following procedure:
a. Using snap ring pliers, install new snap ring to the groove of the piston rear side.

Insert it fully into groove to install.
b. Assemble piston to connecting rod.

Using industrial drier or similar tool, heat the piston until the piston pin can be pushed in by hand with-
out excess force [approximately 60 to 70 °C (140 to 158 °F)]. From the front to the rear, insert piston pin
into piston and connecting rod. : 25.1 N·m (2.6 kg-m, 19 ft-lb)
KBIA0063E
: 39.2 N·m (4.0 kg-m, 29 ft-lb)
KBIA0063E
KBIA0065E

CYLINDER BLOCK
EM-89
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Assemble so that the front mark on the piston head and the oil
holes and the cylinder number on connecting rod are posi-
tioned as shown in the figure.
c. Install new snap ring to the groove of the piston front side.

Insert it fully into groove to install.

After installing, make sure that connecting rod moves
smoothly.
9. Using piston ring expander (commercial service tool), install piston rings.
CAUTION:

Be careful not to damage piston.

Be careful not to damage piston rings by expanding them excessively.

Position each ring with the gap as shown in the figure refer-
ring to the piston front mark.

Install second ring with the stamped surface facing upward.
NOTE:
If there is no stamped mark on piston ring, no specific orienta-
tion is required for installation.
10. Inspect outer diameter of connecting rod bolts. Refer to EM-107, "
CONNECTING ROD BOLT OUTER
DIAMETER" .
11. Install connecting rod bearings to connecting rod and connecting rod cap.

When installing connecting rod bearings, apply new engine oil to the bearing surface (inside). Do not
apply new engine oil to the back surface, but thoroughly clean it.

When installing, align the connecting rod bearing stopper pro-
trusion with the cutout of connecting rod and connecting rod
cap to install.

Ensure the oil hole on connecting rod and that on the corre-
sponding bearing are aligned.
12. Install piston and connecting rod assembly to crankshaft.

Position crankshaft pin corresponding to connecting rod to be installed onto the bottom dead center.

Apply new engine oil sufficiently to the cylinder bore, piston and crankshaft pin journal.

Match the cylinder position with the cylinder number on connecting rod to install.
PBIC2194E
Stamped mark:
To p r i n g : —
Second ring : 2F
PBIC2195E
PBIC2067E

EM-90
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CYLINDER BLOCK


Using piston ring compressor (SST) or suitable tool, install
piston with the front mark on the piston head facing the front
of the engine.
CAUTION:
Be careful not to damage the cylinder wall and crankshaft
pin, resulting from an interference of the connecting rod
big end.
13. Install connecting rod cap.

Match the stamped cylinder number marks on connecting rod
with those on connecting rod cap to install.
14. Tighten connecting rod bolts with the following procedure:
a. Apply new engine oil to the threads and seats of connecting rod bolts.
b. Tighten bolts.
c. Then turn all bolts 90 degrees clockwise (Angle tightening).
CAUTION:
Check and confirm the tightening angle by using angle
wrench (SST) or protractor. Avoid judgement by visual
inspection without the tool.

After tightening connecting rod bolts, make sure that crankshaft rotates smoothly.

Check the connecting rod side clearance. Refer to EM-99, "CONNECTING ROD SIDE CLEARANCE" .
15. Install drive plate.

Secure drive plate with stopper plate, and tighten mounting bolts crosswise over several times.
PBIC1619E
PBIC2196E
: 19.6 N·m (2.0 kg-m, 14 ft-lb)
KBIA0068E

EM-100
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CYLINDER BLOCK


When replacing piston and piston pin assembly, refer to EM-92, "HOW TO SELECT PISTON" .
NOTE:

Piston is available together with piston pin as an assembly.

The 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 feeler gauge.

If the measured valve 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 specifica-
tion. Refer to EM-103, "
Cylinder Bore Inner Diameter" .

Lubricate with new engine oil to piston and piston ring, and then
insert piston ring until middle of cylinder with piston, and mea-
sure piston ring end gap with feeler gauge.

If the measured valve exceeds the limit, replace piston ring, and measure again. If it still exceeds the limit,
re-bore cylinder inner wall and use oversized piston and piston rings.Standard:
Top ring : 0.045 - 0.080 mm (0.0018 - 0.0031 in)
2nd ring : 0.030 - 0.070 mm (0.0012 - 0.0028 in)
Oil ring : 0.065 - 0.135 mm (0.0026 - 0.0053 in)
Limit:
Top ring : 0.11 mm (0.0043 in)
2nd ring : 0.10 mm (0.0040 in)
SEM024AA
Standard:
Top ring : 0.21 - 0.31 mm (0.0083 - 0.0122 in)
2nd ring : 0.32 - 0.47 mm (0.0126 - 0.0185 in)
Oil ring (rail ring) : 0.20 - 0.60 mm (0.0080 - 0.0240 in)
Limit:
Top ring : 0.54 mm (0.0213 in)
2nd ring : 0.67 mm (0.0264 in)
Oil ring (rail ring) : 0.95 mm (0.0374 in)
SEM822B

EM-102
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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) = (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-92, "HOW TO SELECT PISTON" .

If replacing connecting rod assembly, refer to EM-105, "CON-
NECTING ROD BEARING OIL CLEARANCE" to select con-
necting rod bearing.
Factory installed parts grading:

Service parts apply only to grade “0”.
Unit: mm (in)
* : After installing in connecting rod
CYLINDER BLOCK DISTORTION

Using 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.Standard: 19.989 - 20.001 mm (0.7870 - 0.7874 in)
PBIC0117E
Standard: 0.005 - 0.017 mm (0.0002 - 0.0007 in)
PBIC2196E
Grade 0 1
Connecting rod bushing
inner diameter
* 20.000 - 20 .0 06
(0.7874 - 0.7876) 20.006 - 20.012
(0.7876 - 0.7879)
Piston pin hole diameter19.993 - 19.999
(0.7871 - 0.7874) 19.999 - 20. 005
(0.7874 - 0.7876)
Piston pin outer diameter 19.989 - 19.995
(0.7870 - 0.7872) 19.995 - 20.001
(0.7872 - 0.7874)
PBIC2197E

CYLINDER BLOCK
EM-103
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Measure the distortion on the cylinder block upper face at some
different points in six directions with straight edge and feeler
gauge.

If it exceeds the limit, replace cylinder block and lower cylinder
block assembly.
NOTE:
Cylinder block cannot be replaced as a single, because it is
machined together with lower cylinder block.
MAIN BEARING HOUSING INNER DIAMETER

Install lower cylinder block without main bearings installed, and
tighten lower cylinder mounting bolts to the specified torque.
Refer to EM-86, "
ASSEMBLY" for the tightening procedure.

Measure the inner diameter of main bearing housing with bore
gauge.

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

Using 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 engine)
NOTE:
When determining cylinder bore grade, measure the 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,
hone or re-bore the cylinder inner wall.

Oversize piston is provided. When using oversize piston, re-bore the cylinder so that the clearance of the
piston to cylinder bore satisfies the standard.
CAUTION:
When using an oversize piston, use oversize pistons for all cylinders with oversize piston rings.Limit: 0.1 mm (0.004 in)
PBIC0121E
Standard: 58.944 - 58.968 mm (2.3206 - 2.3216 in)
PBIC2012E
Standard inner diameter
: 89.010 - 89.030 mm (3.5043 - 3.5051 in)
Wear limit
: 0.2 mm (0.008 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)
Oversize (OS): 0.2 mm (0.008 in)
SBIA0284E

CYLINDER BLOCK
EM-105
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CRANKSHAFT PIN JOURNAL DIAMETER

Measure the outer diameter of crankshaft pin journal with micrometer.

If out of the standard, measure the connecting rod bearing oil clearance. Then use undersize bearing.
Refer to EM-105, "
CONNECTING ROD BEARING OIL CLEARANCE" .
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 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 valve 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-106, "
MAIN BEARING OIL CLEAR-
ANCE" and/or EM-105, "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 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 speci-
fied torque. Refer to EM-86, "
ASSEMBLY" for the tightening procedure.

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

If the 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-92, "
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. Standard: 44.956 - 44.974 mm (1.7699-1.7706 in) dia.
Limit:
Out-of-round (Difference between “X” and “Y”)
: 0.005 mm (0.0002 in)
Taper (Difference between “A” and “B”)
: 0.005 mm (0.0002 in)
PBIC2203E
Limit : 0.03 mm (0.0012 in)
PBIC2541E
Standard : 0.028 - 0.045 mm (0.0011 - 0.0018 in)
Limit : 0.1 mm (0.004 in)
PBIC1642E