Nissan Juke (2016 year). Service Repair Manual — part 318
EM-100
< UNIT DISASSEMBLY AND ASSEMBLY >
[MR FOR NISMO RS MODELS]
CYLINDER HEAD
CYLINDER HEAD
Exploded View
INFOID:0000000012197302
CAUTION:
Read PRECAUTION carefully.
The exhaust valve contains metallic sodium. Therefore, extreme caution must be taken when handling
and disposing of the exhaust valve. Refer to
EM-6, "Special Cautions to Ensure the Safe Disposal of
REMOVAL
DISASSEMBLY
1.
Cylinder head assembly
2.
Cylinder head bolt
3.
Cylinder head gasket
A.
Comply with the assembly procedure
when tightening. Refer to
.
: N·m (kg-m, ft-lb)
: Always replace after every disassembly.
: Should be lubricated with oil.
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Revision: November 2015
2016 JUKE
CYLINDER HEAD
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Removal and Installation
INFOID:0000000012197303
REMOVAL
CAUTION:
Read PRECAUTION carefully.
The exhaust valve contains metallic sodium. Therefore, extreme caution must be taken when handling
and disposing of the exhaust valve. Refer to
EM-6, "Special Cautions to Ensure the Safe Disposal of
1. Remove the following components and related parts.
• Exhaust manifold: Refer to
• Intake manifold: Refer to
• Fuel injector and fuel tube assembly: Refer to
• Water outlet: Refer to
.
• Rocker cover: Refer to
• Front cover, timing chain: Refer to
.
1.
Valve collet
2.
Valve spring retainer
3.
Valve spring (EXH)
4.
valve spring seat
5.
Valve oil seal
6.
Valve guide (EXH)
7.
Valve seat (EXH)
8.
Valve (EXH)
9.
Valve (INT)
10. Valve seat (INT)
11. Cylinder head
12. Valve guide (INT)
13. Spark plug
14. Valve spring (INT)
A.
Replacement must be following the
disassembly and assembly proce-
dure. Refer to
: N·m (kg-m, ft-lb)
: Always replace after every disassembly.
: Should be lubricated with oil.
JPBIA4317GB
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2016 JUKE
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< UNIT DISASSEMBLY AND ASSEMBLY >
[MR FOR NISMO RS MODELS]
CYLINDER HEAD
• Camshaft: Refer to
.
2. Remove cylinder head.
• Loosen cylinder head bolts in reverse order as shown in the
figure.
• Using TORX socket, loosen cylinder head bolts.
3. Remove cylinder head gasket.
INSTALLATION
1. Install cylinder head gasket.
2. Install cylinder head, and tighten cylinder head bolts in numeri-
cal order as shown in the figure with the following procedure.
CAUTION:
If cylinder head bolts are reused, check their outer diame-
ters before installation. Refer to
.
a. Apply new engine oil to threads and seating surface of mounting
bolts.
b. Tighten all cylinder head bolts.
c.
Turn all cylinder head bolts 100 degrees clockwise (angle tightening).
CAUTION:
Check and confirm the tightening angle by using an angle
wrench [SST: KV10112100 (BT8653-A)] (A) or protractor.
Never judge by visual inspection without the tool.
d. Completely loosen.
CAUTION:
In this step, loosen cylinder head bolts in reverse order that
indicated in the figure.
e. Tighten all cylinder head bolts.
f.
Turn all cylinder head bolts 95 degrees clockwise (angle tightening).
g. Turn all cylinder head bolts 95 degrees clockwise again (angle tightening).
3. Install in the reverse order of removal, for the rest of parts.
Disassembly and Assembly
INFOID:0000000012197304
DISASSEMBLY
1. Remove spark plug with spark plug wrench (commercial service tool).
2. Remove valve lifter.
• Identify installation positions, and store them without mixing them up.
: Engine front
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: Engine front
: 40.0 N·m (4.1 kg-m, 30 ft-lb)
: 0 N·m (0 kg-m, 0 ft-lb)
: 40.0 N·m (4.1 kg-m, 30 ft-lb)
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CYLINDER HEAD
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3. Remove valve collet.
• Compress valve spring with the valve spring compressor [SST:
KV10116200 (J-26336-A)] (A), the attachment [SST:
KV10115900 (J-26336-20)] (C), and the adapter [SST:
KV10109220 ( — )] (B). Remove valve collet with a magnet
hand.
CAUTION:
• Be careful not to damage valve lifter holes.
• Fit the attachment [SST: KV10115900 (J-26336-20)] in the
center of valve spring retainer to press it.
4. Remove valve spring retainer and valve spring (with valve spring seat).
CAUTION:
Never remove valve spring seat from valve spring.
5. Push valve stem to combustion chamber side, and remove valve.
• Identify installation positions, and store them without mixing them up.
6. Remove valve oil seal with a valve oil seal puller [SST:
KV10107902 (J-38959)] (A).
7. When valve seat must be replaced.
• Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat
recess in cylinder head. Set the machine depth stop to ensure this. Refer to
.
CAUTION:
Never bore excessively to prevent cylinder head from scratching.
8. When valve guide must be replaced.
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: Valve spring retainer
A
: Attachment
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PBIC3210J
Revision: November 2015
2016 JUKE
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< UNIT DISASSEMBLY AND ASSEMBLY >
[MR FOR NISMO RS MODELS]
CYLINDER HEAD
a. To remove valve guide, heat cylinder head to 110 to 130
°
C (230
to 266
°
F) by soaking in heated oil (A).
b. Drive out valve guide with a hammer and valve guide drift (com-
mercial service tool).
CAUTION:
Cylinder head contains heat, wear protective equipment to
avoid getting burned.
ASSEMBLY
1. When valve guide is removed, install it.
CAUTION:
Replace with oversize [0.2 mm (0.008 in)] valve guide.
a. Ream cylinder head valve guide hole with a valve guide reamer
(commercial service tool) (A).
b. Heat cylinder head to 110 to 130
°
C (230 to 266
°
F) by soaking in
heated oil (A).
PBIC3214J
SEM931C
For service parts: Oversize [0.2 mm (0.008 in)]
.
PBIC3215J
PBIC3214J
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CYLINDER HEAD
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c. Press valve guide (1) from camshaft side to dimensions as
shown in the figure.
CAUTION:
Cylinder head contains heat, wear protective equipment to
avoid getting burned.
d. Apply reamer finish to valve guide with a valve guide reamer
(commercial service tool) (A).
2. When valve seat is removed, install it.
CAUTION:
Replace with oversize [0.5 mm (0.020 in)] valve seat.
a. Ream cylinder head (1) recess diameter for service valve seat
(2).
• Be sure to ream in circles concentric to the valve guide center.
This will enable valve seat to fit correctly.
b. Heat cylinder head to 110 to 130
°
C (230 to 266
°
F) by soaking in
heated oil (A).
c. Provide valve seats cooled well with dry ice. Press-fit valve seat into cylinder head.
CAUTION:
• Never touch cold valve seats directly.
• Cylinder head contains heat, wear protective equipment to avoid getting burned.
2
: Cylinder head
Projection (H)
: Refer to
.
PBIC3217J
Standard
: Refer to
.
PBIC3215J
For service parts: Oversize [0.5 mm (0.020 in)]
PBIC3218J
PBIC3214J
Revision: November 2015
2016 JUKE
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< UNIT DISASSEMBLY AND ASSEMBLY >
[MR FOR NISMO RS MODELS]
CYLINDER HEAD
d. Using valve seat cutter set (commercial service tool) or valve
seat grinder, finish valve seat to the specified dimensions. For
CAUTION:
When using valve seat cutter, firmly grip the cutter handle
with both hands. Then, press on the contacting surface all
around the circumference to cut in a single drive. Improper
pressure on with the cutter or cutting many different times
may result in stage valve seat.
e. Using compound, grind to adjust valve fitting.
f.
Check again for normal contact. Refer to
.
3. Install valve oil seal.
• Install with a valve oil seal drift [SST: KV10115600 (J-38958)]
(A) to match dimension in the figure.
NOTE:
Dimension is height that measured before installing valve
spring (with valve spring seat).
4. Install valve.
• Install larger diameter to intake side.
5. Install valve spring (with valve spring seat).
• Install smaller pitch (valve spring seat side) to cylinder head
side (B).
• Confirm identification color (A) of valve spring.
6. Install valve spring retainer.
7. Install valve collet.
• Compress valve spring with the valve spring compressor [SST:
KV10116200 (J-26336-A)] (A), the attachment [SST:
KV10115900 (J-26336-20)] (C), and the adapter [SST:
KV10109220 ( — )] (B). Install valve collet with a magnet
hand.
CAUTION:
When working care not to damage valve lifter holes.
• Tap valve stem edge lightly with a plastic hammer after instal-
lation to check its installed condition.
8. Install valve lifter.
• Install it in the original position.
9. Install spark plug with spark plug wrench (commercial service tool).
SEM934C
Height (H)
: 15.1 - 15.7 mm (0.594 - 0.618 in)
PBIC3211J
1
: Valve spring seat (Do not remove from valve spring.)
Intake
: White
Exhaust
: Yellow green
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Revision: November 2015
2016 JUKE
CYLINDER HEAD
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Inspection
INFOID:0000000012197305
INSPECTION AFTER REMOVAL
Cylinder Head Bolts Outer Diameter
• Cylinder head bolts are tightened by plastic zone tightening
method. Whenever the size difference between (d1) and (d2)
exceeds the limit, replace them with a new one.
• If reduction of outer diameter appears in a position other than (d2),
use it as (d2) point.
Cylinder Head Distortion
NOTE:
When performing this inspection, cylinder block distortion should be also checked. Refer to
.
1. Wipe off engine oil and remove water scale (like deposit), gasket, sealant, carbon, etc. with a scraper.
CAUTION:
Never allow gasket debris to enter passages for engine oil or water.
2. At each of several locations on bottom surface of cylinder head,
measure the distortion in six directions using straightedge (A)
and feeler gauge (B).
• If it exceeds the limit, replace cylinder head.
INSPECTION AFTER DISASSEMBLY
VALVE DIMENSIONS
• Check the dimensions of each valve. For the dimensions, refer to
• If dimensions are out of the standard, replace valve and check valve seat contact. Refer to “VALVE SEAT
CONTACT”.
VALVE GUIDE CLEARANCE
Valve Stem Diameter
• Measure the diameter of valve stem with micrometer (A).
Valve Guide Inner Diameter
• Measure the inner diameter of valve guide with bore gauge.
Valve Guide Clearance
• (Valve guide clearance) = (Valve guide inner diameter) – (Valve
stem diameter)
Limit [(d1) – (d2)]: 0.15 mm (0.0059 in)
PBIC3994E
Limit: Refer to
PBIC3207J
Standard: Refer to
.
Standard: Refer to
.
Standard and Limit: Refer to
PBIC3213J
Revision: November 2015
2016 JUKE
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