Nissan Tiida C11. Manual - part 683

EM-84

< ON-VEHICLE REPAIR >

[HR16DE]

CYLINDER HEAD

6.

Remove valve oil seal with the valve oil seal puller [SST:
KV10107902] (A).

7.

Remove valve spring seat.

8.

Remove valve seat, if 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.

CAUTION:

Never bore excessively to prevent cylinder head from scratching.

9.

Remove valve guide, if valve guide must be replaced.

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 press [under a 20 kN (2 ton, 2.2 US
ton, 2.0 lmp ton) pressure] or a hammer and the valve guide drift
(commercial service tool).

WARNING:

Cylinder head contains heat. Wear protective equipment to
avoid getting burned.

INSPECTION AFTER DISASSEMBLY

Valve Dimensions

• Check the dimensions of each valve. For the dimensions, refer to 

EM-125, "Cylinder Head"

.

• If dimensions are out of the standard, replace valve and check valve seat contact. Check “VALVE SEAT

CONTACT”.

Valve Guide Clearance

Valve Stem Diameter

PBIC3728E

JPBIA0184ZZ

SEM931C

CYLINDER HEAD

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• 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)

• If the calculated value exceeds the limit, replace valve and/or valve guide. When valve guide must be

replaced, use “VALVE GUIDE REPLACEMENT”.

Valve Seat Contact

• After confirming that the dimensions of valve guides and valves are

within the specifications, perform this procedure.

• Apply prussian blue (or white lead) onto contacting surface of valve

seat to check the condition of the valve contact on the surface.

• Check if the contact area band is continuous all around the circum-

ference.

• If not, grind to adjust valve fitting and check again. If the contacting

surface still has “NG” conditions even after the re-check, replace
valve seat. Refer to 

EM-82, "Disassembly and Assembly"

.

Valve Spring Squareness

• 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.

• If it exceeds the limit, replace valve spring.

Valve Spring Dimensions and Valve Spring Pressure Load

• Check the valve spring pressure at specified spring height.

• If the installation load or load with valve open is out of the stan-

dard, replace valve spring.

ASSEMBLY

1.

When valve guide is removed, install it. 

CAUTION:

Replace with oversize [0.2 mm (0.008 in)] valve guide.

Standard

: Refer to 

EM-125, "Cylinder Head"

.

Standard

: Refer to 

EM-125, "Cylinder Head"

.

Standard and Limit

: Refer to 

EM-125, "Cylinder Head"

.

PBIC3213J

A

:  OK

B

:  NG

JPBIA0187ZZ

B

:  Contact

Limit

: Refer to 

EM-125, "Cylinder Head"

.

PBIC3219J

Standard

: Refer to 

EM-125, "Cylinder Head"

.

SEM113

EM-86

< ON-VEHICLE REPAIR >

[HR16DE]

CYLINDER HEAD

a.

Using the valve guide reamer (commercial service tool) (A),
ream cylinder head valve guide hole.

b.

Heat cylinder head to 110 to 130

°

C (230 to 266

°

F) by soaking in

heated oil (A).

c.

Using the valve guide drift (commercial service tool), press valve
guide (1) from camshaft side to the dimensions as shown.

WARNING:

Cylinder head (2) contains heat. Wear protective equipment
to avoid getting burned.

d.

Using the valve guide reamer (commercial service tool) (A),
apply reamer finish to valve guide.

2.

When valve seat is removed, install it. 

CAUTION:

Replace with oversize [0.5 mm (0.020 in)] valve seat.

For service parts: Oversized [0.2 mm (0.008 in)]

Refer to 

EM-125, "Cylinder Head"

.

PBIC3215J

PBIC3214J

Projection “H”: Refer to 

EM-125, "Cylinder Head"

.

PBIC3217J

Standard: Refer to 

EM-125, "Cylinder Head"

.

PBIC3215J

CYLINDER HEAD

EM-87

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a.

Ream cylinder head recess diameter (a) for service valve seat.

• Be sure to ream in circles concentric to valve guide center.

This will enable valve 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. Force fit valve seat into cylinder head.

WARNING:

Cylinder head contains heat. Wear protective equipment to avoid getting burned.

CAUTION:

Avoid directly touching cold valve seats.

d.

Using the valve seat cutter set (commercial service tool) or valve
seat grinder, finish seat to the specified dimensions. Refer to

EM-125, "Cylinder Head"

.

CAUTION:

When using the valve seat cutter, firmly grip 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 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 

EM-82, "Disassembly and Assembly"

.

3.

Install valve oil seal.
• Install with the valve oil seal drift [SST: KV10115600] (A) to

match dimension as shown.

4.

Install valve spring seat.

5.

Install valve.
• Install larger diameter to intake side.

For service parts: Oversize [0.5 mm (0.020 in)] 

Refer to 

EM-125, "Cylinder Head"

.

JPBIA0188ZZ

PBIC3214J

SEM934C

Height “H”

: 13.2 - 13.8 mm (0.520 - 0.543 in)

PBIC3211J