Infiniti G35 (V35) Sedan. Manual - part 617

CAMSHAFT

EM-67

< ON-VEHICLE REPAIR >

C

D

E

F

G

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1.

Install timing chain tensioners (secondary) (1) on both sides of
cylinder head.

• Install timing chain tensioner with its stopper pin (C) attached. 
• Install timing chain tensioner with sliding part facing downward

on right-side cylinder head, and with sliding part facing upward
on left-side cylinder head.

2.

Install valve lifter.
• Install it in the original position.

3.

Install camshafts.

• Follow your identification marks made during removal, or fol-

low the identification marks that are present on new camshafts
for proper placement and direction.

• Install camshaft so that dowel pin (A) on front end face are

positioned as shown in the figure. (No. 1 cylinder TDC on its
compression stroke)

NOTE:
Though camshaft does not stop at the portion as shown in the
figure, for the placement of cam nose, it is generally accepted
camshaft is placed for the same direction of the figure.

A

: Right bank

B

: Left bank

JPBIA0121ZZ

: Engine front

Bank

INT/EXH

Dowel pin 

(1)

Paint marks

Identification 

mark (D)

M1 (E)

M2 (F)

M3 (C)

RH

EXH (B)

Yes

No

Green

Light 

blue

1F

INT (A)

Yes

Green

No

Light 

blue

1E

LH

INT (A)

Yes

Green

No

Light 

blue

1G

EXH (B)

Yes

No

Green

Light 

blue

1H

1

: Crankshaft key

JPBIA0127ZZ

JPBIA0094ZZ

EM-68

< ON-VEHICLE REPAIR >

CAMSHAFT

4.

Install camshaft brackets.
• Remove foreign material completely from camshaft bracket

backside and from cylinder head installation face.

• Install camshaft bracket in original position and direction as

shown in figure.

• Install camshaft brackets (No. 2 to 4) aligning the stamp marks

(A) as shown in the figure.

NOTE:
There are no identification marks indicating left and right for
camshaft bracket (No. 1).

• Apply liquid gasket to mating surface of camshaft bracket (No.

1) as shown on both right and left banks.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-15, "Recommended Chemical Products and Sealants"

.

A

:  No.  1

B

:  No.  2

C

:  No.  3

D

:  No.  4

E

: Right camshaft bracket

F

: Exhaust side

G

: Intake side

H

: Left camshaft bracket

I

: Intake side

J

: Exhaust side

: Engine front

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B

: Right bank

C

: Left bank

: Engine front

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a

: 8.5 mm (0.335 in)

b

: 2 mm (0.08 in)

c

: Clearance 5 mm (0.20 in)

d

: 

φ

2.5 mm (0.098 in) 

JPBIA0255ZZ

CAMSHAFT

EM-69

< ON-VEHICLE REPAIR >

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5.

Tighten camshaft bracket bolts in the following steps, in numeri-
cal order as shown.

a.

Tighten No. 7 to 10 in numerical order as shown.

b.

Tighten No. 1 to 6 in numerical order as shown.

c.

Tighten No. 1 to 10 in numerical order as shown.

d.

Tighten No. 1 to 10 in numerical order as shown.

6.

Tighten camshaft sensor bracket bolts in numerical order as
shown in the figure.

NOTE:
The order of tightening bolts is the same for bank 1 and bank 2.

7.

Inspect and adjust the valve clearance. Refer to 

EM-17, "Inspection and Adjustment"

.

8.

Install in the reverse order of removal after this step.

Inspection

INFOID:0000000000956261

INSPECTION AFTER REMOVAL

Camshaft Runout

1.

Put V-block on precise flat table, and support No. 2 and 4 jour-
nals of camshaft.

CAUTION:

Do not support No. 1 journal (on the side of camshaft
sprocket) because it has a different diameter from the other
three locations.

2.

Set a dial indicator vertically to No. 3 journal.

3.

Turn camshaft to one direction with hands, and measure the
camshaft runout on a dial indicator. (Total indicator reading)

4.

If it exceeds the limit, replace camshaft.

Camshaft Cam Height

: Engine front

: 1.96 N·m (0.20 kg-m, 1 ft-lb)

: 1.96 N·m (0.20 kg-m, 1 ft-lb)

: 5.88 N·m (0.60 kg-m, 4 ft-lb)

: 10.4 N·m (1.1 kg-m, 8 ft-lb)

JPBIA0257ZZ

: Engine front

JPBIA0357ZZ

Standard & limit

: Refer to 

EM-142, "Camshaft"

.

PBIC0929E

EM-70

< ON-VEHICLE REPAIR >

CAMSHAFT

1.

Measure the camshaft cam height with a micrometer.

2.

If wear exceeds the limit, replace camshaft.

Camshaft Journal Oil Clearance

CAMSHAFT JOURNAL DIAMETER

• Measure the outer diameter of camshaft journal with a micrometer

(A).

CAMSHAFT BRACKET INNER DIAMETER 

• Tighten camshaft bracket bolt with the specified torque. Refer to “INSTALLATION” for the tightening proce-

dure.

• Measure inner diameter (A) of camshaft bracket with a bore gauge.

CAMSHAFT JOURNAL OIL CLEARANCE

• (Oil clearance) = (Camshaft bracket inner diameter) – (Camshaft journal diameter).

• If the calculated value exceeds the limit, replace either or both camshaft and cylinder head.

NOTE:
Camshaft brackets cannot be replaced as single parts, because there are machined together with cylinder
head. Replace whole cylinder head assembly.

Camshaft End Play

Standard cam height 

: Refer to 

EM-142, "Cam-

shaft"

.

 (Intake & exhaust)

Cam wear limit

: Refer to 

EM-142, "Cam-

shaft"

.

EMQ0072D

Standard and limit

: Refer to 

EM-142, "Cam-

shaft"

.

JPBIA0122ZZ

Standard

: Refer to 

EM-142, "Camshaft"

.

PBIC1645E

Standard and limit

: Refer to 

EM-142, "Camshaft"

.