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Infiniti FX35 / FX45. Manual - part 674

CAMSHAFT

EM-213

< SERVICE INFORMATION >

[VK45DE]

Measure the camshaft cam height with micrometer.

If wear exceeds the limit, replace camshaft.

Camshaft Journal Oil Clearance

CAMSHAFT JOURNAL DIAMETER

• Measure the outer diameter of camshaft journal with micrometer.

CAMSHAFT BRACKET INNER DIAMETER

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

dure.

• Measure the inner diameter “A” of camshaft bracket with bore

gauge.

CAMSHAFT JOURNAL OIL CLEARANCE

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

• If the calculated value out of the standard, replace either or both camshaft and cylinder head.

NOTE:
Camshaft bracket cannot be replaced as a single part, because it is machined together with cylinder head.
Replace whole cylinder head assembly.

Camshaft End Play

Standard cam height

Intake

: 44.865 - 45.055 mm (1.7663 - 1.7738 in)

Exhaust

: 43.925 - 44.115 mm (1.7293 - 1.7368 in)

Cam wear limit

: 0.2 mm (0.008 in)

PBIC0039E

Standard:

No. 1

: 25.938 - 25.955 mm (1.0212 - 1.0218 in)

No. 2, 3, 4

: 25.953 - 25.970 mm (1.0218 - 1.0224 in)

PBIC0040E

Standard:

26.000 - 26.021 mm (1.0236 - 1.0244 in)

PBIC1645E

Standard:

No. 1

: 0.045 - 0.083 mm (0.0018 - 0.0033 in)

No. 2, 3, 4

: 0.030 - 0.068 mm (0.0012 - 0.0027 in)

EM-214

< SERVICE INFORMATION >

[VK45DE]

CAMSHAFT

• Install dial indicator in thrust direction on front end of camshaft.

Measure the end play of dial indicator when camshaft is moved for-
ward/backward (in direction to axis).

• Measure the following parts if out of the limit.
- Dimension “A” for camshaft No. 1 journal

- Dimension “B” for cylinder head No. 1 journal bearing

• Refer to the standards above, and then replace camshaft and/or

cylinder head.

Camshaft Sprocket Runout

Put V-block on precise flat table, and support No. 2 and 5 journal of camshaft.

CAUTION:

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

Measure the camshaft sprocket runout with dial indicator. (Total
indicator reading)

• If it exceeds the limit, replace camshaft sprocket.

Valve Lifter

Check if surface of valve lifter has any wear or cracks.
• If anything above is found, replace valve lifter. Refer to

EM-218,

"Valve Clearance"

Valve Lifter Clearance

VALVE LIFTER OUTER DIAMETER

Standard:

0.115 - 0.188 mm (0.0045 - 0.0074 in)

PBIC2446E

Standard

: 30.500 - 30.548 mm (1.2008 - 1.2027 in)

Standard

: 30.360 - 30.385 mm (1.1953 - 1.1963 in)

KBIA2426J

Limit

: 0.15 mm (0.0059 in)

PBIC0930E

KBIA2285E

CAMSHAFT

EM-215

< SERVICE INFORMATION >

[VK45DE]

• Measure the outer diameter of valve lifter with micrometer.

VALVE LIFTER HOLE DIAMETER

• Measure the inner diameter of valve lifter hole of cylinder head with

inside micrometer.

VALVE LIFTER CLEARANCE

• (Valve lifter clearance) = (Valve lifter hole diameter) – (Valve lifter outer diameter)

• If the calculated value is out of the standard, referring to each standard of valve lifter outer diameter and

valve lifter hole diameter, replace either or both valve lifter and cylinder head.

INSTALLATION

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

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.

Standard

: 33.977 - 33.987 mm (1.3377 - 1.3381 in)

JEM798G

Standard

: 34.000 - 34.016 mm (1.3386 - 1.3392 in)

SEM867E

Standard

: 0.013 - 0.039 mm (0.0005 - 0.0015 in)

Bank

INT/EXH

Identification

rib

Paint marks

Identification

mark

EXH

Yes

White

INT

Yes

White

INT

White

EXH

White

PBIC2355E

EM-216

< SERVICE INFORMATION >

[VK45DE]

CAMSHAFT

• Install camshaft so that dowel pin on front end face are posi-

tioned as shown in the figure. (No. 1 cylinder TDC on its com-
pression stroke)
NOTE:
Though camshaft does not stop at the position 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.

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

backside and from cylinder head installation face.

• Install by referring to installation location mark on upper sur-

face and front mark.

• Install so that installation location mark can be correctly read

when viewed from the side of left exhaust bank.

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

1) as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

CAUTION:

• After installation, be sure to wipe off any excessive liq-

uid gasket leaking from part “A” and “B” (both on right
and left sides).

• Remove completely any excess of liquid gasket inside

bracket.

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

6) on left bank intake as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

CAUTION:

• After installation, be sure to wipe off any excessive liq-

uid gasket leaking from part “A” and “B” (both on right
and left sides).

• Remove completely any excess of liquid gasket inside

bracket.

Camshaft dowel pin

: At cylinder head upper face side in each bank

SBIA0366E

PBIC0034E

PBIC2356E

PBIC2357E

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