camshaft bolts nm INFINITI FX35 2006 Service Manual

EM-52
[VQ35DE]
ROCKER COVER
Revision: 2006 December 2006 FX35/FX45
10. Loosen mounting bolts with power tool in reverse order as shown in the figure.
11. Remove rocker cover gaskets from rocker covers.
12. Use a scraper to remove all trances of liquid gasket from cylinder head and camshaft bracket (No. 1). CAUTION:
Do not scratch or damage the mating surface when cleaning off old liquid gasket.
INSTALLATION
1. Apply liquid gasket with the tube presser [SST: WS39930000 ( — )] to joint part among rocker cover, cylinder head and
camshaft bracket (No. 1) as follows:
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
NOTE:
The figure shows an example of left bank side [zoomed in
shows camshaft bracket (No. 1)].
a. Refer to the figure “a” to apply liquid gasket to joint part of cam- shaft bracket (No. 1) and cylinder head.
b. Refer to the figure “b” to apply liquid gasket to the figure “a” squarely.
2. Install new rocker cover gasket to rocker cover.
3. Install rocker cover.

Check if rocker cover gasket is not dropped from installation groove of rocker cover.
KBIA0985E
PBIC2474E

EM-54
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2006 December 2006 FX35/FX45
FRONT TIMING CHAIN CASEPFP:13599
Removal and InstallationNBS003GN
NOTE:

This section describes removal/installation procedure of front timing chain case and timing chain related
parts without removing oil pan (upper) on the vehicle.

When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or
installed, remove oil pans (upper and lower) first. Then remove front timing chain case, timing chain
related parts, and rear timing chain case in this order, and install in reverse order of removal. Refer to EM-
64, "TIMING CHAIN" .

Refer to EM-64, "TIMING CHAIN" for component parts location.
REMOVAL
1. Disconnect negative battery terminal. Refer to SC-4, "BATTERY" .
2. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
3. Remove air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
4. Remove front and rear engine undercover with power tool.
5. Release the fuel pressure. Refer to EC-86, "
FUEL PRESSURE RELEASE" .
6. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine oil on drive belts.
7. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:

Perform this step when the engine is cold.

Do not spill engine coolant on drive belts.
8. Separate engine harnesses removing their brackets from front timing chain case.
9. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
10. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
11. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside. Refer to PS-29, "
POWER STEERING OIL PUMP" .
12. Remove power steering oil pump bracket. Refer to PS-29, "
POWER STEERING OIL PUMP" .
13. Remove alternator. Refer to SC-20, "
CHARGING SYSTEM" .
14. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
15. Remove intake valve timing control covers.

Loosen mounting bolts in reverse order as shown in the fig-
ure.

U s e t h e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ( J 3 7 2 2 8 ) ] t o c u t l i q u i d
gasket for removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
SEM728G

EM-66
[VQ35DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45

Loosen mounting bolts in reverse order as shown in the fig-
ure.

U s e t h e s e a l c u t t e r [ S S T: K V 1 0 1111 0 0 ( J 3 7 2 2 8 ) ] t o c u t l i q u i d
gasket for removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
19. Remove collared O-ring from front timing chain case (left and right side).
20. Remove rocker covers (right and left). Refer to EM-51, "
ROCKER COVER" .
21. Remove oil pans (lower and upper). Refer to EM-30, "
OIL PAN AND OIL STRAINER" .
22. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
a. Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing indicator.
b. Make sure that intake and exhaust cam noses on No. 1 cylinder (engine front side of right bank) are located as shown in the fig-
ure.

If not, turn crankshaft one revolution (360 degrees) and align
as shown in the figure.
23. Remove crankshaft pulley as follows:
SEM728G
PBIC2631E
KBIA1717J
SEM418G

TIMING CHAIN EM-69
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
29. Remove internal chain guide, tension guide and slack guide. NOTE:
Tension guide can be removed after removing timing chain (pri-
mary).
30. Remove timing chain (primary) and crankshaft sprocket. CAUTION:
After removing timing chain (primary), do not turn crankshaft and camshaft separately, or valves
will strike the piston heads.
31. Remove timing chain (secondary) and camshaft sprockets as follows:
a. Attach suitable stopper pin to the right and left timing chain ten- sioners (secondary).
NOTE:

Use approximately 0.5 mm (0.020 in) dia. hard metal pin as a
stopper pin.

For removal of timing chain tensioner (secondary), refer to
EM-83, "
CAMSHAFT" . [Removing camshaft bracket (No. 1)
is required.]
b. Remove camshaft sprocket (INT and EXH) mounting bolts.

Secure the hexagonal portion of camshaft using a wrench to
loosen mounting bolts.
CAUTION:
Do not loosen the mounting bolts with securing anything
other than the camshaft hexagonal portion or with ten-
sioning the timing chain.
c. Remove timing chain (secondary) together with camshaft sprockets.

Turn camshaft slightly to secure slackness of timing chain on timing chain tensioner (secondary) side.
PBIC2266E
PBIC2047E
KBIA1698J

EM-70
[VQ35DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45

Insert 0.5 mm (0.020 in)-thick metal or resin plate between
timing chain and timing chain tensioner plunger (guide).
Remove timing chain (secondary) together with camshaft
sprockets with timing chain loose from guide groove.
CAUTION:
Be careful of plunger coming-off when removing timing
chain (secondary). This is because plunger of timing
chain tensioner (secondary) moves during operation,
leading to coming-off of fixed stopper pin.
NOTE:
Camshaft sprocket (INT) is two-for-one structure of primary
and secondary sprockets.

When handling camshaft sprocket (INT), be careful of the fol-
lowing caution:
CAUTION:

Handle carefully to avoid any shock to camshaft
sprocket.

Do not disassemble. (Do not loosen bolts “A” as
shown in the figure).
32. Remove rear timing chain case as follows:
a. Loosen and remove mounting bolts in reverse order as shown in the figure.
b. Cut liquid gasket using the seal cutter [SST: KV10111100 (J37228)] and remove rear timing chain case.
CAUTION:

Do not remove plate metal cover of oil passage.

After removal, handle rear timing chain case carefully so
it does not tilt, cant, or warp under a load.
PBIC1978E
PBIC2980E
SEM735G
KBIA1307E

EM-76
[VQ35DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45
b. Install timing chains (secondary) and camshaft sprockets.

Align the mating marks on timing chain (secondary) (gold link)
with the ones on intake and exhaust camshaft sprockets
(punched), and install them.
NOTE:

Mating marks for intake camshaft sprocket are on the back
side of camshaft sprocket (secondary).

There are two types of mating marks, circle and oval types.
They should be used for the right and left banks, respec-
tively.

Align dowel pin and pin hole on camshafts with the groove
and dowel pin on sprockets, and install them.

On the intake side, align pin hole on the small diameter side of
the camshaft front end with dowel pin on the back side of
camshaft sprocket, and install them.

On the exhaust side, align dowel pin on camshaft front end
with pin groove on camshaft sprocket, and install them.

In case that positions of each mating mark and each dowel
pin are not fit on mating parts, make fine adjustment to the
position holding the hexagonal portion on camshaft with wrench or equivalent.

Mounting bolts for camshaft sprockets must be tightened in the next step. Tightening them by hand is
enough to prevent the dislocation of dowel pins.

It may be difficult to visually check the dislocation of mating
marks during and after installation. To make the matching
easier, make a mating mark on the top of sprocket teeth and
its extended line in advance with paint.
c. After confirming the mating marks are aligned, tighten camshaft sprocket mounting bolts.

Secure camshaft using a wrench at the hexagonal portion to
tighten mounting bolts. Right bank : Use circle type.
Left bank : Use oval type.
PBIC2981E
PBIC0891E
KBIA1698J

EM-84
[VQ35DE]
CAMSHAFT
Revision: 2006 December 2006 FX35/FX45

Refer to GI-11, "Components" for symbol marks in the figure.
Removal and InstallationNBS003GR
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.
19. Camshaft position sensor (PHASE)
(left bank) 20. Intake valve timing control solenoid
valve (left bank)
A. Refer to EM-88
.
KBIA1046E
SEM443GA

CAMSHAFT EM-85
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45

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.
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.
PBIC2050E
PBIC2111E
Standard : Less than 0.02 mm (0.0008 in)
Limit : 0.05 mm (0.0020 in)PBIC0929E

EM-90
[VQ35DE]
CAMSHAFT
Revision: 2006 December 2006 FX35/FX45

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" .
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
PBIC2052E
PBIC2660E
: 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

PREPARATION EM-167
[VK45DE]
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Revision: 2006 December 2006 FX35/FX45
PREPARATIONPFP:00002
Special Service ToolsNBS003HI
The actual shapes of Kent-Moore tools may differ from those of special service tools illustrated here. Tool number
(Kent-Moore No.)
Tool name Description
KV10111100
(J–37228)
Seal cutter Removing steel oil pan and front cover
KV10114400
(J-38365)
Heated oxygen sensor wrench Loosening or tightening air fuel ratio sensors
and heated oxygen sensors
a: 22 mm (0.87 in)
EG15050500
(J–45402)
Compression gauge adapter Inspection of compression pressure
KV10116200
(J–26336-A)
Valve spring compressor
1. KV10115900
(J–26336-20)
Attachment
2. KV10109220
(—)
Adapter Disassembling valve mechanism
Part (1) is a component of KV10116200
(J26336-A), but part (2) is not so.
KV101151S0
(J–38972)
Lifter stopper set
1. KV10115110
(J–38972-1)
Camshaft pliers
2. KV10115120
(J–38972-2)
Lifter stopper Changing valve lifter shims
KV10112100
(BT8653-A)
Angle wrench Tightening bolts for bearing cap, cylinder
head, etc.
S-NT046
S-NT636
ZZA1225D
PBIC1650E
S-NT041
S-NT014