Infiniti EX35. Manual - part 705

CAMSHAFT VALVE CLEARANCE

EM-19

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C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

• By referring to the figure, measure the valve clearances at

locations marked “

×

” as shown in the table below (locations

indicated in the figure).

• No. 1 cylinder at compression TDC

c.

Rotate crankshaft 240 degrees clockwise (when viewed from engine front) to align No. 3 cylinder at TDC
its compression stroke.
NOTE:
Mark a position 240 degrees (b) from a corner of the hexagonal
part of crankshaft pulley mounting bolt as shown in the figure.
Use the hexagonal part as a guide.

: Engine front

Measuring position [bank 1 (A)]

No. 1 CYL.

No. 3 CYL. 

No. 5 CYL.

No. 1 cylinder at com-

pression TDC

EXH (C)

×

 (B)

INT (D)

×

 (E)

Measuring position [bank 2 (H)]

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 1 cylinder at com-

pression TDC

INT (D)

×

 (F)

EXH (C)

×

 (G)

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1

: Crankshaft pulley

A

: Paint mark

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EM-20

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CAMSHAFT VALVE CLEARANCE

• By referring to the figure, measure the valve clearances at

locations marked “

×

” as shown in the table below (locations

indicated in the figure).

• No. 3 cylinder at compression TDC

d.

Rotate crankshaft 240 degrees clockwise (when viewed from engine front) to align No. 5 cylinder at TDC
of compression stroke.
NOTE:
Mark a position 240 degrees (b) from a corner of the hexagonal
part of crankshaft pulley mounting bolt as shown in the figure.
Use the hexagonal part as a guide.

: Engine front

Measuring position [bank 1 (A)]

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 3 cylinder at com-

pression TDC

EXH (C)

×

 (B)

INT (D)

×

 (E)

Measuring position [bank 2 (H)]

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 3 cylinder at com-

pression TDC

INT (D)

×

 (F)

EXH (C)

×

 (G)

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1

: Crankshaft pulley

A

:  Paint  mark

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CAMSHAFT VALVE CLEARANCE

EM-21

< ON-VEHICLE MAINTENANCE >

C

D

E

F

G

H

I

J

K

L

M

A

EM

N

P

O

• By referring to the figure, measure the valve clearances at

locations marked “

×

” as shown in the table below (locations

indicated in the figure).

• No. 5 cylinder at compression TDC

3.

Perform adjustment if the measured value is out of the standard. Refer to “ADJUSTMENT”.

ADJUSTMENT

• Perform adjustment depending on selected head thickness of valve lifter.
1.

Measure the valve clearance. Refer to “INSPECTION”.

2.

Remove camshaft. Refer to 

EM-67, "Removal and Installation"

.

3.

Remove valve lifters at the locations that are out of the standard.

4.

Measure the center thickness of the removed valve lifters with a
micrometer (A).

5.

Use the equation below to calculate valve lifter thickness for replacement.

: Engine front

Measuring position [bank 1 (A)]

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 5 cylinder at 

compression TDC

EXH (C)

×

 (B)

INT (D)

×

 (E)

Measuring position [bank 2 (H)]

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 5 cylinder at 

compression TDC

INT (D)

×

 (F)

EXH (C)

×

 (G)

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Valve lifter thickness calculation:

t = t

1

+ (C

1 

– C

2

)

t

= Valve lifter thickness to be replaced

t

1

= Removed valve lifter thickness

C

1

= Measured valve clearance

C

2

= Standard valve clearance:

Intake

: 0.30 mm (0.012 in) 

Exhaust

: 0.33 mm (0.013 in) 

EM-22

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CAMSHAFT VALVE CLEARANCE

• Thickness of new valve lifter can be identified by stamp marks

on the reverse side (inside the cylinder).
Stamp mark 788 indicates 7.88 mm (0.3102 in) in thickness.

Available thickness of valve lifter: 27 sizes with range 7.88 to 8.40 mm (0.3102 to 0.3307 in) in steps of
0.02 mm (0.0008 in) (when manufactured at factory). Refer to 

EM-140, "Camshaft"

.

6.

Install selected valve lifter.

7.

Install camshaft. Refer to 

EM-67, "Removal and Installation"

.

8.

Manually turn crankshaft pulley a few turns. 

9.

Check that the valve clearances for cold engine are within the specifications by referring to the specified
values. Refer to 

EM-18, "Inspection and Adjustment"

.

10. Install all removal parts in the reverse order of removal. 

11. Warm up the engine, and check for unusual noise and vibration.

A

:  Stamp

B

: Thickness of valve lifter

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