vq35de INFINITI FX35 2005 Service Manual

EM-82
[VQ35DE]
TIMING CHAIN
Revision: 2005 July 2005 FX
e. Tighten mounting bolts in numerical order as shown in the fig-
ure.
15. Install oil pans (upper and lower). Refer to EM-30, "
OIL PAN AND OIL STRAINER" .
16. Install rocker covers (right and left banks). Refer to EM-51, "
ROCKER COVER" .
17. Install crankshaft pulley as follows:
a. Fix crankshaft using the ring gear stopper [SST: KV10117700 (J44716)].
b. Install crankshaft pulley, taking care not to damage front oil seal.

When press-fitting crankshaft pulley with plastic hammer, tap on its center portion (not circumference).
c. Tighten crankshaft pulley bolt.
d. Put a paint mark on crankshaft pulley aligning with angle mark on crankshaft pulley bolt. Then, further retighten bolt by 60
degrees (Angle tightening).
e. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns smoothly.
18. For the following operations, perform steps in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak.

Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .

Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.

Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after the engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.

Warm up engine thoroughly to make sure there is no leakage of fuel, or any oil/fluids including engine oil
and engine coolant.

Bleed air from lines and hoses of applicable lines, such as in cooling system.
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
SEM751G

TIMING CHAIN EM-83
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After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid. power steering fluid, brake fluid, etc. Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage

EM-84
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
CAMSHAFTPFP:13001
ComponentsABS00E66
1. Intake valve timing control solenoid
valve (right bank) 2. Gasket 3. Camshaft bracket (No. 2 to 4)
4. Camshaft (EXH) 5. Camshaft (INT) 6. Camshaft bracket (No. 1)
7. Dowel pin 8. Valve lifter 9. O-ring
10. Timing chain tensioner (secondary)
(right bank) 11. Spring 12. Plunger
13. Timing chain tensioner (secondary)
(left bank) 14. Cylinder head (right bank) 15. Cylinder head (left bank)
16. O-ring 17. Camshaft position sensor (PHASE)
(right bank) 18.Camshaft position sensor (PHASE)
(left bank)
19. Intake valve timing control solenoid valve (left bank)
PBIC2930E

CAMSHAFT EM-85
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Removal and InstallationABS00E9V
REMOVAL
1. Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to EM-
64, "TIMING CHAIN" .
2. Remove camshaft position sensor (PHASE) (right and left banks) from cylinder head back side.
CAUTION:

Handle carefully to avoid dropping and shocks.

Do not disassemble.

Do not allow metal powder to adhere to magnetic part at
sensor tip.

Do not place sensors in a location where they are
exposed to magnetism.
3. Remove intake valve timing control solenoid valves.

Discard intake valve timing control solenoid valve gaskets and
use new gaskets for installation.
4. Remove camshaft brackets.

Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for
installation.

Equally loosen camshaft bracket bolts in several steps in
reverse order as shown in the figure.
5. Remove camshaft.
6. Remove valve lifter.

Identify installation positions, and store them without mixing them up.
KBIA1046E
SEM443GA
PBIC2050E

EM-86
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
7. Remove timing chain tensioner (secondary) from cylinder head.

Remove timing chain tensioner (secondary) with its stopper
pin attached.
NOTE:
Stopper pin was attached when timing chain (secondary) was
removed.
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
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 microme-
ter.
CAMSHAFT BRACKET INNER DIAMETER

Tighten camshaft bracket bolt with the specified torque. Refer to EM-89, "INSTALLATION" for the tighten-
ing procedure.
PBIC2111E
Standard : Less than 0.02 mm (0.0008 in)
Limit : 0.05 mm (0.0020 in)PBIC0929E
Standard cam height (intake and exhaust) : 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Cam wear limit : 0.2 mm (0.008 in)
EMQ0072D
Standard:No. 1 : 25.935 - 25.955 mm (1.0211 - 1.0218 in)
No. 2, 3, 4 : 23.445 - 23.465 mm (0.9230 - 0.9238 in)
PBIC0040E

CAMSHAFT EM-87
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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

Install a dial indicator in thrust direction on front end of camshaft.
Measure the end play of a dial indicator when camshaft is
moved forward/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
1. Put V-block on precise flat table, and support No. 2 and 4 journals 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. Standard:
No. 1 : 26.000 - 26.021 mm (1.0236 - 1.0244 in)
No. 2, 3, 4 : 23.500 - 23.521 mm (0.9252 - 0.9260 in)
PBIC1645E
Standard: No. 1 : 0.045 - 0.086 mm (0.0018 - 0.0034 in)
No. 2, 3, 4 : 0.035 - 0.076 mm (0.0014 - 0.0030 in)
Limit : 0.15 mm (0.0059 in)
Standard : 0.115 - 0.188 mm (0.0045 - 0.0074 in)
Limit : 0.24 mm (0.0094 in)
SEM864E
Standard : 27.500 - 27.548 mm (1.0827 - 1.0846 in)
Standard : 27.360 - 27.385 mm (1.0772 - 1.0781 in)
KBIA2404J

EM-88
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
2. Measure the camshaft sprocket runout with a 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-153,
"Available Valve Lifter" .
Valve Lifter Clearance
VALVE LIFTER OUTER DIAMETER

Measure the outer diameter at 1/2 height of valve lifter with a
micrometer since valve lifter is in barrel shape.
VALVE LIFTER HOLE DIAMETER

Measure the inner diameter of valve lifter hole of cylinder head
with an 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. Limit : 0.15 mm (0.0059 in)
PBIC0930E
KBIA0182E
Standard (Intake and exhaust)
: 33.977 - 33.987 mm (1.3377 - 1.3381 in)
JEM798G
Standard (Intake and exhaust): 34.000 - 34.016 mm (1.3386 - 1.3392 in)
SEM867E
Standard (Intake and exhaust): 0.013 - 0.039 mm (0.0005 - 0.0015 in)

CAMSHAFT EM-89
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INSTALLATION
1. Install timing chain tensioners (secondary) on both sides of cyl-
inder head.

Install timing chain tensioner with its stopper pin attached.

Install timing chain tensioner with sliding part facing down-
ward on right-side cylinder head, and with sliding part facing
upward on left-side cylinder head.

Install new O-ring as shown in the figure.
2. Install valve lifter.

Install it in the original position.
3. Install camshafts.

Install camshaft with dowel pin attached to its front end face
on the exhaust side.

Follow your identification marks made during removal, or fol-
low the identification marks that are present on new cam-
shafts for proper placement and direction.

Install camshaft so that dowel pin hole and dowel pin on front
end face are positioned as shown in the figure. (No. 1 cylinder
TDC on its compression stroke)
NOTE:

Large and small pin holes are located on front end face of
camshaft (INT), at intervals of 180 degrees. Face small dia.
side pin hole upward (in cylinder head upper face direc-
tion).

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.
PBIC2111E
KBIA1071E
Bank INT/EXH Dowel pin Paint marks
Identification
mark
M1 M2
RH INT No Pink No RE
EXH Yes No Orange RE
LH INT No Pink No LH
EXH Yes No Orange LH
KBIA1009E
PBIC2478E

EM-90
[VQ35DE]
CAMSHAFT
Revision: 2005 July 2005 FX
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 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-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
PBIC2051E
PBIC2052E
PBIC2660E

CAMSHAFT EM-91
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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. CAUTION:
After tightening mounting bolts of camshaft brackets (No.
1), be sure to wipe off excessive liquid gasket from the
parts list below.

Mating surface of rocker cover

Mating surface of rear timing chain case
6. Measure difference in levels between front end faces of cam- shaft bracket (No. 1) and cylinder head.

Measure two positions (both intake and exhaust side) for a
single bank.

If the measured value is out of the standard, re-install cam-
shaft bracket (No. 1).
7. Inspect and adjust the valve clearance. Refer to EM-93, "
Valve Clearance" .
8. Install in the reverse order of removal after this step. : 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)
PBIC2050E
Standard : –0.14 to 0.14 mm (–0.006 to 0.006 in)
EMQ0044D