Infiniti FX35 / FX45. Manual - part 644

 

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Infiniti FX35 / FX45. Manual - part 644

 

 

CAMSHAFT

EM-93

< SERVICE INFORMATION >

[VQ35DE]

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 by 240 degrees clockwise (when viewed from engine front) to align No. 3 cylinder at
TDC of its compression stroke.

NOTE:
• To align cylinder No. 3 with the compression top dead center,

place matching marks (A) on the crankshaft pulley (1) side and
on the cylinder block side at a point 240

°

 counterclockwise

from the compression top dead center using the hex head of
the crankshaft pulley bolt as a guide.

Measuring position (right bank)

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 1 cylinder at 

compression TDC

EXH

×

INT

×

Measuring position (left bank)

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 1 cylinder at 

compression TDC

INT

×

 

EXH

×

 

PBIC2054E

PBIC4628J

EM-94

< SERVICE INFORMATION >

[VQ35DE]

CAMSHAFT

• 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 by 240 degrees clockwise (when viewed from engine front) to align No. 5 cylinder at
TDC of compression stroke.

NOTE:
• To align cylinder No. 5 with the compression top dead center,

place matching marks (A) on the crankshaft pulley (1) side and
on the cylinder block side at a point 240

°

 counterclockwise

from the compression top dead center using the hex head of
the crankshaft pulley bolt as a guide.

Measuring position (right bank)

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 3 cylinder at 

compression TDC

EXH

×

INT

×

Measuring position (left bank)

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 3 cylinder at 

compression TDC

INT

×

 

EXH

 

×

PBIC2055E

PBIC4628J

CAMSHAFT

EM-95

< SERVICE INFORMATION >

[VQ35DE]

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.

For measured value are out of the standard, perform adjustment. 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-84, "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.

5.

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

Measuring position (right bank)

No. 1 CYL.

No. 3 CYL.

No. 5 CYL.

No. 5 cylinder at 

compression TDC

EXH

×

INT

×

Measuring position (left bank)

No. 2 CYL.

No. 4 CYL.

No. 6 CYL.

No. 5 cylinder at 

compression TDC

INT

×

 

EXH

 

×

PBIC2056E

KBIA0057E

Valve lifter thickness calculation:

t = t

1

+ (C

– 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)*

*: Approximately 20

°

C (68

°

F)

EM-96

< SERVICE INFORMATION >

[VQ35DE]

CAMSHAFT

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

on the reverse side (inside the cylinder).

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-149, "Standard and Limit"

.

CAUTION:

Install identification letter at the end, “U”, “R” and “V” at each of proper positions.

6.

Install selected valve lifter.

7.

Install camshaft. Refer to 

EM-84, "Removal and Installation"

.

8.

Manually turn crankshaft pulley a few turns. 

9.

Make sure that the valve clearances for cold engine are within the specifications by referring to the speci-
fied values. Refer to "INSPECTION".

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

EM-84, "Removal and Installation"

.

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

KBIA0119E

Stamp mark

Thickness

788U
790U

·
·

840U

788R
790R

·
·

840R

788V
790V

·
·

840V

7.88 mm
7.90 mm

·
·

8.40 mm

 

 

 

 

 

 

 

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