Nissan Primera P12. Manual — part 440
EM-106
[YD]
CYLINDER BLOCK
CONNECTING ROD SIDE CLEARANCE
●
Using feeler gauge, measure side clearance between connect-
ing rod and crankshaft arm.
●
If measured value exceeds the limit, replace connecting rod and
repeat measurement.
If measured value still exceeds the limit, replace crankshaft.
PISTON TO PISTON PIN CLEARANCE
Piston Pin Hole Inner Diameter
Using inside micrometer, measure piston pin hole inner diameter.
Piston Pin Outer Diameter
Using micrometer, measure piston pin outer diameter.
Calculation of Piston to Piston Pin Clearance
(Piston pin clearance) = (Piston pin hole inner diameter)
−
(Piston pin outer diameter)
●
If clearance is exceeds specification, replace either or both piston/piston pin assembly.
PISTON RING SIDE CLEARANCE
●
Using feeler gauge, measure clearance between piston ring and
piston ring groove.
Unit: mm (in)
Standard
: 0.200 - 0.350(0.0079 - 0.0138 in)
Limit
: 0.4 mm (0.0157 in)
JEM203G
Standard
: 28.003 - 28.009 mm (1.1025 - 1.1027 in)
PBIC0116E
Standard
: 27.995 - 28.000 mm (1.1022 - 1.1024 in)
PBIC0117E
Standard
: 0.003 - 0.014 mm (0.0001 - 0.0006 in)
Item
Standard
Limit
Top ring
0.050- 0.090 (0.0020 - 0.0035)
0.2 (0.008)
2nd ring
0.050 - 0.090 (0.0020 - 0.0035)
0.1 (0.004)
Oil ring
0.030 - 0.070 (0.0012 - 0.0028)
—
SEM024AA
CYLINDER BLOCK
EM-107
[YD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
●
Align top ring and external surface of piston. Measure lower side
clearance of top ring with top ring pressed onto upper side of
ring groove.
●
If side clearance exceeds the limit, replace piston ring.
●
Check clearance again. If side clearance still exceeds the limit,
replace piston.
PISTON RING END GAP
●
Check that cylinder bore diameter is within specifications.
Refer to
EM-109, "PISTON TO CYLINDER BORE CLEAR-
.
●
Using piston, press piston ring to cylinder mid point, and mea-
sure end gap.
Unit: mm (in)
CONNECTING ROD BEND AND TORSION
Use connecting rod aligner to check bend and torsion.
FEM100
Item
Standard
Limit
Top ring
0.20 - 0.30 (0.0079 - 0.0118)
1.0 (0.039)
2nd ring
0.31 - 0.51 (0.0122 - 0.0201)
Oil ring
0.30 - 0.55 (0.0118 - 0.0217)
FEM101
Bend limit
: 0.12 mm (0.0047 in)/100 mm (3.94 in)
Torsion limit
: 0.12 mm (0.0047 in)/100 mm (3.94 in)
SEM038F
SEM003F
EM-108
[YD]
CYLINDER BLOCK
CONNECTING ROD BIG END INNER DIAMETER
●
Install connecting rod caps without connecting rod bearings and
tighten connecting rod nuts to the specified torque. Using inside
micrometer, measure connecting rod big end inner diameter.
CONNECTING ROD BUSHING OIL CLEARANCE (SMALL END)
Connecting Rod Small End Inner Diameter
Use inside micrometer to measure small end inner diameter.
Piston Pin Outer Diameter
Use micrometer to measure piston pin outer diameter.
Calculation of Connecting Rod Bushing Clearance
(Connecting rod small end bushing clearance) = (Connecting rod small end inner diameter)
−
(Piston pin outer
diameter)
●
If out of specifications, replace connecting rod and/or piston and piston pin assembly. Refer to
"HOW TO SELECT CONNECTING ROD BEARING"
.
Standard
: 55.000 - 55.013 mm (2.1654 - 2.1659 in)
PBIC0119E
Standard
: 28.026 - 28.038 mm (1.1034 - 1.1039 in)
PBIC0120E
Standard
: 27.995 - 28.000 mm (1.1022 - 1.1024 in)
PBIC0117E
Standard
: 0.026 - 0.044 mm (0.0010 - 0.0017 in)
Limit
: 0.057 mm (0.0022 in)
CYLINDER BLOCK
EM-109
[YD]
C
D
E
F
G
H
I
J
K
L
M
A
EM
CYLINDER BLOCK TOP SURFACE DISTORTION
●
Using scraper, remove gasket installed onto cylinder block sur-
face. Remove contamination such as oil, scale, and carbon.
CAUTION:
Keep broken pieces of gasket clear of oil and coolant pas-
sages.
●
Use straightedge and feeler gauge to check block upper surface
for distortion.
MAIN BEARING HOUSING INNER DIAMETER
●
Without installing main bearings, install main bearing caps, and
tighten bolts to the specified torque.
●
Measure the inner diameter of main bearing housing with a bore
gauge.
●
If the measurement is out of the specified range, replace cylin-
der block and main bearing caps.
PISTON TO CYLINDER BORE CLEARANCE
Cylinder Bore Inner Diameter
●
Using bore gauge, measure cylinder inner diameters at 6 posi-
tions; top, middle, and bottom (C - A) in 2 directions (X, Y).
●
If clearance exceeds the limit, or any flaws or seizures are found
on inner surface of cylinder, horn or bore the applicable cylinder
or redore all cylinder.
Limit
: 0.04 mm (0.0016 in)
SEM501G
Standard
: 66.654 - 66.681 mm (2.6242 - 2.6252 in)
JEM214G
Cylinder inner diameter:
Standard
: 86.000 - 86.030 mm
(3.3858 - 3.5870 in)
Wear limit
: 0.07 mm (0.0028 in)
Out-of-round limit (X - Y)
: 0.015 mm (0.0006 in)
Taper limit (C - A)
: 0.010 mm (0.0004 in)
PBIC0763E
FEM110
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