Nissan Note [182/334] Cylinder head

Nissan Note [182/334] Cylinder head
EM-182
[HR]
CYLINDER HEAD
3. Heat cylinder head to 110 to 130°C(230to266°F) by soaking in
heated oil.
4. Provide valve seats cooled well with a dry ice. Press-fit valve seats into cylinder head.
CAUTION:
Avoid directly to touching cold valve seats.
Cylinder head contains heat, when working, wear protective equipment to avoid getting burned.
5. Using a valve seat cutter set (commercial service tool) or a valve
seat grinder, finish valve seat to the specified dimensions. For
dimensions, refer to EM-219, "
Valve Seat" .
CAUTION:
When using a 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.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact. Refer to EM-181, "
VALVE SEAT CONTACT" .
VALVE SPRING SQUARENESS
Set a try square along the side of valve spring and rotate valve
spring. Measure the maximum clearance between the top of
valve spring and try square.
If it exceeds the limit, replace valve spring.
VALVE SPRING DIMENSIONS AND VALVE SPRING PRESSURE LOAD
Check valve spring pressure with valve spring seat installed at
the specified spring height.
SEM008A
SEM934C
Limit : 1.8 mm (0.070 in)
PBIC0080E
SEM113

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