Nissan Juke (2016 year). Service Repair Manual — part 342
EM-292
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
CYLINDER BLOCK
CAUTION:
Check that snap ring is securely seated in the groove.
• Check that the connecting rod moves smoothly.
9. Install piston rings using a piston ring expander (commercial service tool).
CAUTION:
• Never damage piston.
• Be careful that the piston ring does not spread out too much and break.
• Position end gaps of each piston ring as shown in the figure.
CAUTION:
Never allow the rail end gap under the oil ring to contact
the oil drain cast groove of piston.
• Install top ring and second ring with stamp mark sides facing
up.
10. Install connecting rod bearing to connecting rod (1) and connect-
ing rod cap (4).
• Apply engine oil to the bearing surface (sliding surface). Do
not apply engine oil to the reverse side of the bearing, but thor-
oughly clean it.
• Install the connecting rod in the dimension as shown in the fig-
ure.
NOTE:
• There is no positioning pawl.
• When it is installed at the position as shown in the figure, the
connecting rod bearing is at the center. For service opera-
tion, the center position can be checked visually.
• Check that the bearing oil hole is in the inside of the connecting rod oil hole chamfered area completely.
• Temporarily install the connecting rod cap with the bearing to the connecting rod, and then check that
the connecting rod bearings (upper) and (lower) are in the correct positions.
11. Install the piston and connecting rod assembly to the crankshaft.
• Set crankshaft pin at the installation position to BDC on compression stroke.
• Apply engine oil to the cylinder bore, the piston, and the crankshaft pin journal.
A
: On oil ring or on lower rail end gap (either location)
B
: Front mark
C
: Second ring end gap, oil ring spacer end gap
D
: Top ring end gap
E
: Stamp (top ring: 1N, second ring: 2N)
2
: Connecting rod bearing (upper)
3
: Connecting rod bearing (lower)
A
: Connecting rod bearing (upper) oil hole
B
: Connecting rod oil hole chamfered area
C
: Oil hole
D
: Arrow view D
E
: OK
F
: Not OK
g
: 2.05 – 2.45 mm (0.081 – 0.096 in)
: Engine front
JSBIA5910GB
JPBIA2155ZZ
Revision: November 2015
2016 JUKE
CYLINDER BLOCK
EM-293
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• Match the cylinder position and the connecting rod cylinder
No. (D), and install.
• Install so that the front mark on the piston head faces engine
front.
• Install piston using a piston ring compressor (commercial ser-
vice tool) (A) so that front mark on piston head faces toward
engine front.
CAUTION:
• Never damage mating surface with connecting rod cap.
• Never damage cylinder inner wall or crankshaft pin by
interfering with connecting rod large end.
12. Install the connecting rod bearing cap.
• Match the cylinder No. stamp (D) on the connecting rod and
the cylinder No. stamp on the cap and install.
NOTE:
• The symbol of connecting rod is one example.
• The symbols without notes are for management purposes.
13. Tighten connecting rod bolts according to the following procedure.
CAUTION:
• Check that there is no clearance in the thrust surface (A)
of the joint between connecting rod (1) and connecting
rod cap (2) and check that the parts are in the correct
positions.
• Tighten the connecting rod bolts. Refer to
.
a. Apply new engine oil to the main bearing cap bolt threads and
seat surfaces.
b. Tighten to 27.4 N·m (2.8 kg-m, 20 ft-lb).
c. Loosen all the way to 0 N·m (0 kg-m).
d. Tighten at 19.6 N·m (2.0 kg-m, 14 ft-lb).
e. Put a matching mark on each bolt and connecting rod cap in the same direction (when using a protractor).
f.
Tighten an additional 60
°
(angle tightening).
CAUTION:
A
: Piston front mark
B
: Oil hole
C
: Engine type
E
: Large end grade
F
: Connecting rod front mark
JSBIA5917ZZ
PBIC3244J
A
: Piston front mark
B
: Oil hole
C
: Engine type
E
: Large end grade
F
: Connecting rod front mark
JSBIA5917ZZ
PBIC3510J
Revision: November 2015
2016 JUKE
EM-294
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
CYLINDER BLOCK
Check tightening angle with an angle wrench [SST:
KV10112100 (BT8653-A)] A or a protractor. Never estimate
tightening angle visually.
• Check that the crankshaft rotates smoothly by hand after tight-
ening the main bearing cap bolt.
• Check the connecting rod side clearance. Refer to
.
14. Install the oil pan (upper). Refer to
NOTE:
Install the rear oil seal after installing the oil pan (upper).
15. Install rear oil seal. Refer to
EM-271, "REAR OIL SEAL : Removal and Installation"
16. Install knock sensor (1) in the direction shown in the figure.
CAUTION:
• Never subject parts to impact. If any impact is applied,
replace it.
• Check that no foreign material adheres to cylinder block
and knock sensor mounting surfaces.
• Install connectors so that they are positioned toward
engine rear.
• Be sure to use specified bolts.
• Never hold connector while tightening bolts.
• Never allow installed sensor connector to interfere with other parts.
17. Assemble in the reverse order of disassembly.
Inspection
INFOID:0000000012197446
INSPECTION AFTER DISASSEMBLY
Crankshaft Side Clearance
• Move crankshaft to front or rear, and measure thrust bearing-to-
crank arm clearance using a dial indicator (A).
• If the limit is exceeded, replace the thrust bearing and then mea-
sure again. Replace the crankshaft if it still exceeds the limit.
- When replacing the crankshaft, refer to
and select the main bearing and connecting rod bear-
ing.
Connecting Rod Side Clearance
PBIC3245J
A
: Left side of cylinder block
: Engine front
JPBIA5163ZZ
Stan
dard
: Refer to
Limit
JPBIA4436ZZ
Revision: November 2015
2016 JUKE
CYLINDER BLOCK
EM-295
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• Measure connecting rod-to-crank arm side clearance using a
feeler gauge (A).
• If the limit is exceeded, replace the connecting rod, and then mea-
sure again. Replace the crankshaft if it still exceeds the limit.
- When replacing the crankshaft, refer to
and select the main bearing and connecting rod bear-
ing.
Piston-to-piston Pin Clearance
Piston pin hole inner diameter
• Measure inner diameter of piston pin hole using an inside
micrometer (A).
Piston pin outer diameter
• Measure piston pin outer diameter using a micrometer (A).
How to calculate piston-to-piston pin clearance
• Calculate the piston pin clearance using the following formula.
(Piston pin clearance) = (Piston pin hole inner diameter) - (Piston pin outer diameter)
• If clearance exceeds the standard, replace piston and piston pin assembly.
- When replacing piston and piston assembly, refer to
EM-304, "Selective-fit Service Parts"
and select the cor-
rect parts.
NOTE:
Piston and piston pin are service parts for assembly.
Piston Ring Side Clearance
Stan
dard
: Refer to
Limit
JPBIA4437ZZ
Stan
dard
: Refer to
PBIC3265J
Stan
dard
: Refer to
PBIC3266J
Stan
dard
: Refer to
Revision: November 2015
2016 JUKE
EM-296
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
CYLINDER BLOCK
• Measure piston ring-to-piston ring groove clearance using a feeler
gauge (A).
• Replace piston ring if the limit is exceeded (the standard for oil
ring).
• Measure the clearance again. If it still exceeds the limit (the stan-
dard for oil ring), replace piston.
- When replacing the piston, refer to
EM-304, "Selective-fit Service
and select the correct part.
Piston Ring End Gap
• Check that the cylinder bore inner diameter is within the standard. Refer to
• Apply oil to the piston (1) and the piston ring (2). Using the piston,
press the piston ring into the cylinder center position (B), and then
measure the end gap.
• If the limit is exceeded, replace piston rings.
Connecting Rod Bend and Torsion
• Check connecting rod bend and torsion with a connecting rod
alignment tool.
• Replace the connecting rod assembly if it exceeds the limit.
Connecting Rod Large End Diameter
Stan
dard
: Refer to
Limit
PBIC3280J
A
: Press in.
C
: Feeler gauge
Stan
dard
: Refer to
Limit
PBIC3267J
A
: Bend
B
: Twist
C
: Feeler gauge
Limit
: Refer to
PBIC3268J
Revision: November 2015
2016 JUKE
CYLINDER BLOCK
EM-297
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• Without installing connecting rod bearing, install connecting rod
cap (1) and tighten connecting rod bolt to the specified torque.
Measure connecting rod large end diameter with an inside
micrometer.
- For the connecting rod bolt tightening procedure, refer to
.
• Replace the connecting rod assembly if it is outside the standard.
- When replacing the connecting rod, refer to
EM-304, "Selective-fit Service Parts"
, and select the connecting
rod bearing.
Connecting Rod Small End Clearance
Connecting rod small end inner diameter
• Measure inner diameter of connecting rod small end using an
inside micrometer (A).
Piston pin outer diameter
• Measure piston pin outer diameter using a micrometer (A).
Calculating connecting rod small end clearance
• Calculate the connecting rod small end clearance using the following formula.
(Connecting rod small end clearance) = (connecting rod small end inner diameter) - (piston pin outer diame-
ter)
• Refer to each part standard and replace connecting rod and/or piston and piston pin assembly if the limit is
exceeded.
- When replacing piston and piston assembly, refer to
EM-304, "Selective-fit Service Parts"
and select the cor-
rect parts.
2
: Connecting rod
A : Image
B
: Inner diameter
measurement di-
rection
Stan
dard
: Refer to
PBIC3269J
Stan
dard
: Refer to
PBIC3270J
Stan
dard
: Refer to
PBIC3266J
Stan
dard
: Refer to
Limit
Revision: November 2015
2016 JUKE
EM-298
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
CYLINDER BLOCK
NOTE:
Piston and piston pin are service parts for assembly.
- When replacing the connecting rod, refer to
EM-304, "Selective-fit Service Parts"
rod bearing.
Cylinder Block Upper Surface Distortion
• Remove old gasket on cylinder block upper surface using a scraper. Also remove oil, scale, and carbon
deposits.
CAUTION:
Never allow gasket fragments to enter oil or engine coolant passages.
• Check flatness of cylinder block upper surface using a straight-
edge (A) and a feeler gauge (B). Measure distortion, at several
points each in six directions.
• If the limit is exceeded, replace the cylinder block.
- When replacing the cylinder block, refer to
Main Bearing Housing Inner Diameter
• Without installing main bearing, install main bearing cap, and tighten main bearing cap bolts to the specified
torque.
- For main bearing cap bolt tightening procedure, refer to
EM-287, "Disassembly and Assembly"
.
• Measure the main bearing housing inside diameter with a bore gauge.
• Measure the position shown in the figure (5 mm rearward from
main bearing housing front side end surface) in two directions, as
shown in the figure. Use the smaller one as the measured value.
• If the result is outside the standard, replace the cylinder block.
NOTE:
Main bearing cap is machined together with cylinder block, so they cannot be replaced separately.
- When replacing the cylinder block, refer to
EM-304, "Selective-fit Service Parts"
and select the main bearing.
Piston-to-cylinder Bore Clearance
Cylinder bore inner diameter
• Use a bore gauge and measure at three points from the top of the
engine (upper, middle, lower: “C”, “D”, and “E” as shown in the fig-
ure) in two directions (“A”, “B”) for measurement at a total of six
points.
NOTE:
The measurement point for bore grade is 60 mm below the cylin-
der head mounting surface (position “D” in the figure). Measure the
dimension in the engine LH/RH directions (“B” in the figure).
Limit : Refer to
PBIC3250J
1
: Cylinder block
2
: Main bearing cap
: Engine front
Stan
dard
: Refer to
PBIC3271J
f
: 10 mm (0.39 in)
g
: 60 mm (2.36 in)
h
: 130 mm (5.12 in)
JPBIA2059ZZ
Revision: November 2015
2016 JUKE
CYLINDER BLOCK
EM-299
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR EXCEPT FOR NISMO RS MODELS]
C
D
E
F
G
H
I
J
K
L
M
A
EM
N
P
O
• Replace the cylinder block if the limit is exceeded, or if damage or seizure is found on cylinder inner wall.
NOTE:
There is no service setting for oversized piston
- When replacing the cylinder block, refer to
EM-304, "Selective-fit Service Parts"
and select the main bearing.
Piston outer diameter
• Measure piston skirt outer diameter using a micrometer (A).
How to calculate piston-to-cylinder bore clearance
• Calculate from the piston skirt outer diameter and the cylinder bore
inner diameter (measured at position “D” in direction “B”).
(Clearance) = (Cylinder bore inner diameter)
-
(Piston skirt outer
diameter)
• If the limit is exceeded, refer to the standard for each part standard, and replace the connecting rod and/or
the piston and piston pin assembly.
- When replacing piston and piston assembly, refer to
EM-304, "Selective-fit Service Parts"
and select the cor-
rect parts.
NOTE:
Piston and piston pin are service parts for assembly.
- When replacing the cylinder block, refer to
EM-304, "Selective-fit Service Parts"
and select the main bearing.
Crankshaft Main Journal Diameter
Cylinder bore inner diameter standard
: Refer to
Out-of-round limit (difference between measure-
ments X and Y)
Taper limit (difference between measurements A and
C)
: Refer to
Stan-
dard
: Refer to
.
PBIC3272J
f
: 10 mm (0.39 in)
g
: 60 mm (2.36 in)
h
: 130 mm (5.12 in)
Stan
dard
: Refer to
Limit
JPBIA2059ZZ
Revision: November 2015
2016 JUKE
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст