2014 NISSAN TEANA Service Manual

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NISSAN TEANA 2014 Service Manual
CYLINDER HEADEM-75
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• Replace the cylinder heads bolts with new ones if the size differ-
ence between d1 and d2 exceeds the lim

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NISSAN TEANA 2014 Service Manual
EM-76
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CYLINDER HEAD
Disassembly and Assembly
INFOID:0000000009460505
CAUTION:
• When installing camshafts, chain tensioners, oil seals or other sliding parts,

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• Compress valve spring using Tools. Remove valve collet with
a magnet hand.
CAUTION:
• Be careful not t

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NISSAN TEANA 2014 Service Manual
EM-78
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CYLINDER HEAD
4. Install new valve oil seal using Tool (A) as shown.
5. Install valve. • Install larger diameter to intake side.
6. Install valve spring

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NISSAN TEANA 2014 Service Manual
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1. Wipe off oil and remove water scale deposits, old gasket, old
sealer, and carbon with a scraper.
CAUTION:

Page 2078 of 4801

NISSAN TEANA 2014 Service Manual
EM-80
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CYLINDER HEAD
2. Drive out valve guide with a press [under 20 kN (2.2 ton-f) pres-
sure] or suitable tool.
3. Ream cylinder head valve guide hole using suit

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NISSAN TEANA 2014 Service Manual
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After confirming that the dimensions of valve guides and valves are
within specifications, perform this proc

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After confirming that the dimensions of valve guides and valves are
within specifications, perform this procedure:
• Apply prussian blue (or white lead) onto contacting surface of valve
seat to check the condition of t he valve contact on the seat sur-
face.
• Check if the contact area band is continuous all around the circum-
ference.
• If not, grind to adjust valve fitti ng and check again. If the contacting
surface still has NG conditions even after the re-check, replace the
valve seat.
VALVE SEAT REPLACEMENT
NOTE:
When valve seat is removed, replace with an oversized [0.5 mm (0.020 in)] valve seat.
1. Bore out old seat until it collapses. Boring shoul d not continue beyond the bottom face of the seat recess
in the cylinder head. Set the machine depth stop to ensure this.
2. Ream cylinder head recess diameter for service valve seat.
• Be sure to ream in circles concentric to the valve guide center.This will enable the valve seat to fit correctly.
3. Heat cylinder head to 110 ° to 130 °C (230 ° to 266 °F) by soaking
in heated oil.
WARNING:
Cylinder head contains heat . When working, wear protec-
tive equipment to avo id getting burned.
4. Use valve seats cooled well with dry ice. Force fit valve seat into cylinder head. CAUTION:
Avoid directly touching the cold valve seats.
5. Finish the seat to the specified dimensions using suitable tool. Refer to EM-111, "Standard and Limit"
.
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 cu t in a single drive. Improper
pressure on the cutter or cutting many different times may
result in a defective valve seat.
6. Using compound, grind to adjust valve fitting.
7. Check again for normal contact.
SBIA0322E
Intake : 37.000 - 37.016 mm (1.4567 - 1.4573 in)
Exhaust : 32.000 - 32.016 mm (1.2598 - 1.2605 in)
SEM795A
SEM008A
SEM934C
Revision: November 20132014 Altima NAM

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NISSAN TEANA 2014 Service Manual
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CYLINDER HEAD
VALVE SPRING SQUARENESS
Set try square (A) along the side of the valve spring and rotate the
spring. Measure the maximum clearance between th

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