INFINITI M35 2006 Factory Service Manual

EM-78
[VQ35DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
8. Install internal chain guide, slack guide and timing chain ten-
sioner (primary).
CAUTION:
Do not overtighten slack guide mounting bolts. It is normal
for a gap to exist under the bolt seats when mounting bolts
are tightened to the specification.
9. Install the timing chain tensioner (primary) with the following procedure:
a. Pull plunger stopper tab up (or turn lever downward) so as to
remove plunger stopper tab from the ratchet of plunger.
NOTE:
Plunger stopper tab and lever are synchronized.
b. Push plunger into the inside of tensioner body.
c. Hold plunger in the fully compressed position by engaging
plunger stopper tab with the tip of ratchet.
d. To secure lever, insert stopper pin through hole of lever into ten-
sioner body hole.
The lever parts and the tab are synchronized. Therefore, the
plunger will be secured under this condition.
NOTE:
Figure shows the example of 1.2 mm (0.047 in) diameter thin screwdriver being used as the stopper pin.
PBIC2109E
PBIC2633E
PBIC3568E

TIMING CHAIN
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Revision: 2006 January2006 M35/M45
e. Install timing chain tensioner (primary).
Remove any dirt and foreign materials completely from the
back and the mounting surfaces of timing chain tensioner (pri-
mary).
f. Pull out stopper pin after installing, and then release plunger.
10. Make sure again that the mating marks on sprockets and timing chain have not slipped out of alignment.
11. Install new O-rings on rear timing chain case.
12. Install new front oil seal on front timing chain case.
Apply new engine oil to both oil seal lip and dust seal lip.
Install it so that each seal lip is oriented as shown in the fig-
ure.
Using a suitable drift [outer diameter: 60 mm (2.36 in)], press-
fit oil seal until it becomes flush with front timing chain case
end face.
Make sure the garter spring is in position and seal lip is not
inverted.
13. Install water pump cover and chain tensioner cover to front timing chain case.
PBIC3569E
PBIC2548E
SEM715A
PBIC0790E

EM-80
[VQ35DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
Apply a continuous bead of liquid gasket with the tube presser
[SST: WS39930000 ( — )] to front timing chain case as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
14. Install front timing chain case as follows:
a. Apply a continuous bead of liquid gasket with the tube presser
[SST: WS39930000 ( — )] to front timing chain case back
side as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
b. Install front timing chain case as to fit its dowel pin hole together dowel pin on rear timing chain case.
c. Tighten mounting bolts to the specified torque in numerical order
as shown in the figure.
There are two type of mounting bolts. Refer to the following
for locating bolts.
d. After all bolts are tightened, retighten them to the specified
torque in numerical order shown in the figure.
CAUTION:
Be sure to wipe off any excessive liquid gasket leaking on surface mating with oil pan (upper).
SEM744GA
PBIC2658E
M8 bolts : 1, 2
: 28.4 Nꞏm (2.9 kg-m, 21 ft-lb)
M6 bolts : Except the above
: 12.7 Nꞏm (1.3 kg-m, 9 ft-lb)
KBIA1303E

TIMING CHAIN
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Revision: 2006 January2006 M35/M45
e. After installing front timing chain case, check the surface height
difference between the following parts on the oil pan (upper)
mounting surface.
If not within the standard, repeat the installation procedure.
15. Install right and left intake valve timing control covers as follows:
a. Install new seal rings in shaft grooves.
b. Apply a continuous bead of liquid gasket with the tube presser
[SST: WS39930000 ( — )] to intake valve timing control cov-
ers as shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
c. Install new collared O-rings in front timing chain case oil hole
(left and right sides).
d. Being careful not to move seal ring from the installation groove, align dowel pins on front timing chain
case with holes to install intake valve timing control covers.
e. Tighten mounting bolts in numerical order as shown in the fig-
ure.
16. Install oil pans (upper and lower). Refer to EM-29, "
OIL PAN AND OIL STRAINER" .
17. Install rocker covers (right and left banks). Refer to EM-51, "
ROCKER COVER" .
18. 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). Standard
Front timing chain case to rear timing chain case:
–0.14 to 0.14 mm (–0.005 to 0.0055 in)
SEM943G
SBIA0492E
PBIC2631E
PBIC0918E

EM-82
[VQ35DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
c. Tighten crankshaft pulley bolt.
d. Place a matching mark (A) on crank pulley (1) aligning with the
matching (B) of crank pulley mounting bolt (2). Tighten the bolts
90 degrees (one marks).
NOTE:
The figure shows crankshaft pulley bolt with four marks.
Use an angle wrench (SST) for a crankshaft pulley bolt with
six–marks.
e. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
19. 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 MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
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.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.: 44.1 Nꞏm (4.5 kg-m, 33 ft-lb)
PBIC4627J
PBIC3821E

TIMING CHAIN
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Revision: 2006 January2006 M35/M45
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: 2006 January2006 M35/M45
CAMSHAFTPFP:13001
ComponentsNBS004NL
1.Intake valve timing control solenoid
valve 2. Gasket 3. Camshaft bracket (No. 2 to 4)
4. Seal washer 5. Camshaft (EXH) 6. Camshaft (INT)
7. Camshaft bracket (No. 1) 8. Dowel pin 9. Valve lifter
10. O-ring 11. Timing chain tensioner (secondary) 12. Spring
13. Plunger 14. Cylinder head (right bank) 15. Cylinder head (left bank)
16. O-ring 17.Camshaft position sensor (PHASE)
(bank 1)18.Camshaft position sensor (PHASE)
(bank 2)
PBIC2306E

CAMSHAFT
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Revision: 2006 January2006 M35/M45
Removal and InstallationNBS004NM
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) (bank 1 and bank
2) 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: 2006 January2006 M35/M45
7. Remove timing chain tensioner (secondary) from cylinder head.
Remove timing chain tensioner (secondary) with its stopper
pin attached.
NOTE:
Stopper pin should be attached when timing chain (secondary)
is 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 (0.001 in)
Limit : 0.05 mm (0.002 in)PBIC0929E
Standard cam height (intake and exhaust)
: 44.865 - 45.055 mm (1.7663 - 1.7738 in)
Cam wear limit
: 0.2 mm (0.0078 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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Revision: 2006 January2006 M35/M45
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