Nissan Rogue. Manual — part 575
CYLINDER HEAD
EM-65
< REMOVAL AND INSTALLATION >
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d. Finish valve seat to the specified dimension using suitable tool.
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 the cutter or cutting many different times may
result in stage valve seat.
e. Using compound, grind to adjust valve.
f.
Check again for normal contact. Refer to
.
3. Apply new engine oil to new valve oil seal joint surface and seal lip.
4. Install new valve oil seal using suitable tool (A) as shown.
NOTE:
Dimension is height measured before installing valve spring
(with valve spring seat).
5. Install valve.
• Install larger diameter to intake side.
6. Install valve spring with valve spring seat (1).
• Install valve spring so that the identification color faces upward
(A).
• Install smaller pitch to cylinder head side (B).
• Confirm the identification color of the valve spring.
7. Install valve spring retainer.
8. Install valve collet.
SEM934C
(A)
: OK
(B)
: NG
JPBIA0187ZZ
Projection (H)
: Refer to
ALBIA0864GB
Intake
: White
Exhaust
: Light blue
JPBIA4479ZZ
EM-66
< REMOVAL AND INSTALLATION >
CYLINDER HEAD
• Compress valve spring using suitable tool (A). Install valve col-
let with a magnet hand.
CAUTION:
When working do not damage valve lifter holes.
• Tap valve stem edge lightly with a plastic hammer after instal-
lation to check its installed condition.
9. Install valve lifter.
10. Install spark plug. Refer to
EM-19, "Removal and Installation"
Inspection After Disassembly
INFOID:0000000011279965
CYLINDER HEAD DISTORTION
1. Wipe off engine oil and remove water scale deposits, old gasket,
old sealer, and carbon using a suitable tool.
CAUTION:
Use care not to allow gasket debris to enter passages for
engine oil or engine coolant.
2. At each of several locations on bottom surface of cylinder head,
measure distortion in six directions using suitable tools (A, B).
• If measurements exceed the limit, replace cylinder head.
VALVE DIMENSIONS
1. Check dimensions of each valve. Refer to
2. If dimensions are out of the standard, replace valve and check valve seat contact.
VALVE SEAT CONTACT
NOTE:
After confirming that the dimensions of valve guides and valves are within specifications, perform this proce-
dure:
1. Apply prussian blue (or white lead) onto contacting surface of
valve seat to check the condition of the vavle contact on the seat
surface.
2. Ensure that the contact area band is continuous all around the
circumference.
3. If the contact area is not continuous, grind to adjust valve fitting and check again. If the contacting surface
still has NG conditions even after the re-check, replace the valve seat.
VALVE GUIDE CLEARANCE
AWBIA1760ZZ
Limit
: Refer to
PBIC3207J
(A)
: OK
(B)
: NG
JPBIA0187ZZ
CYLINDER HEAD
EM-67
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1. Measure diameter of valve stem using suitable tool (A) as
shown.
2. Measure inner diameter of valve guide using suitable tool.
3. Valve guide clearance = (Valve guide inner diameter) - (Valve
stem diameter)
4. If the calculated value exceeds the limit, replace valve and/or valve guide. When valve guide must be
replaced. Refer to
EM-61, "Disassembly and Assembly"
VALVE SPRING SQUARENESS
CAUTION:
Do not remove the valve spring seat from the valve spring
1. Set a try square (A) along the side of valve spring and rotate
spring. Measure the maximum clearance between the top of
spring and try square.
2. If the valve spring exceeds the limit, replace the valve spring
with the valve spring seat.
VALVE SPRING PRESSURE LOAD
CAUTION:
Do not remove the valve spring seat.
1. Check valve spring pressure with valve spring seat installed at
the specified spring height.
2. If the installation load or load with valve open is out of the stan-
dard, replace valve spring with valve spring seat.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
1. Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to
2. Use the following steps to check for fuel leaks.
a. Turn ignition switch "ON" (with engine stopped).
b. With fuel pressure applied to fuel piping, check for fuel leaks at connection points.
Standard
: Refer to
Standard
Standard and Limit
: Refer to
AWBIA0068ZZ
(B) : Contact
Limit
: Refer to
PBIC3219J
Standard
: Refer to
.
SEM113
EM-68
< REMOVAL AND INSTALLATION >
CYLINDER HEAD
c.
Start engine.
d. With engine speed increased, check again for fuel leaks at connection points.
3. Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
4. Warm up engine thoroughly to check there are no fuel leaks, exhaust gas leaks, or any oil/fluid leaks
including engine oil and engine coolant.
5. Bleed air from lines and hoses of applicable lines, such as in cooling system.
6. After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
*: Power steering fluid, brake fluid, etc.
Items
Before starting engine
Engine running
After engine stopped
Engine coolant
Level
Leakage
Level
Engine oil
Level
Leakage
Level
Transmission /
transaxle fluid
AT & CVT Models
Leakage
Level / Leakage
Leakage
MT Models
Level / Leakage
Leakage
Level / Leakage
Other oils and fluids*
Level
Leakage
Level
Fuel
Leakage
Leakage
Leakage
Exhaust gases
—
Leakage
—
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