INFINITI FX35 2006 Service Manual

TIMING CHAIN EM-67
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
a. Remove starter motor (2WD) or rear cover plate (AWD) and set the ring gear stopper (SST) as shown in the figure. Refer to SC-
8, "STARTING SYSTEM" .
NOTE:
Figure shows 2WD models.
b. Loosen crankshaft pulley bolt and rotate bolt seating surface at 10 mm (0.39 in) from its original position.
CAUTION:
Do not remove crankshaft pulley bolt as it will be used as a
supporting point for suitable puller.
c. Place suitable puller tab on holes of crankshaft pulley, and pull crankshaft pulley through.
CAUTION:
Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.
24. Remove front timing chain case as follows:
a. Loosen mounting bolts in reverse order as shown in the figure.
PBIC1098E
PBIC1103E
EMQ0477D
KBIA1303E

EM-68
[VQ35DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45
b. Insert a suitable tool into the notch at the top of front timing chain case as shown (1).
c. Pry off case by moving the tool as shown (2).

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:

Do not use a screwdriver or something similar.

After removal, handle front timing chain case carefully so
it does not tilt, cant, or warp under a load.
25. Remove O-rings from rear timing chain case.
26. Remove water pump cover and chain tensioner cover from front timing chain case, if necessary.

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 g a s k e t f o r r e m o v a l .
27. Remove front oil seal from front timing chain case using a suit- able tool.

Use a screwdriver for removal.
CAUTION:
Be careful not to damage front timing chain case.
28. Remove timing chain tensioner (primary) as follows:
a. Remove lower mounting bolt.
b. Loosen upper mounting bolt slowly, and then turn timing chain tensioner (primary) on the mounting bolt so that plunger is fully
expanded.
NOTE:
Even if plunger is fully expanded, it is not dropped from the body
of timing chain tensioner (primary).
c. Remove upper mounting bolt, and then remove timing chain ten- sioner (primary).
SEM156F
PBIC2548E
EMQ0032D
PBIC3562E

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

TIMING CHAIN EM-71
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
33. Remove O-rings from cylinder head.
34. Remove O-rings from cylinder block.
35. Remove timing chain tensioners (secondary) from cylinder head as follows, if necessary.
a. Remove camshaft brackets (No. 1). Refer to EM-84, "
REMOVAL" .
b. Remove timing chain tensioners (secondary) with a stopper pin attached.
36. Use a scraper to remove all traces of liquid gasket from front and rear timing chain cases, and opposite mating surfaces.

Remove old liquid gasket from the bolt hole and thread.
SBIA0496E
PBIC0788E
SEM737G
PBIC2084E

EM-72
[VQ35DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45
37. Use a scraper to remove all traces of liquid gasket from water pump cover, chain tensioner cover and intake valve timing con-
trol covers.
INSPECTION AFTER REMOVAL
Timing Chain
Check for cracks and any excessive wear at link plates and roller
links of timing chain. Replace timing chain as necessary.
INSTALLATION
NOTE:
The below figure shows the relationship between the mating mark on each timing chain and that on the corre-
sponding sprocket, with the components installed.
SEM926E
PBIC0282E
PBIC4662E

TIMING CHAIN EM-73
[VQ35DE]
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Revision: 2006 December 2006 FX35/FX45
1. Install timing chain tensioners (secondary) to cylinder head as follows if removed. Refer to EM-88,
"INSTALLATION" .
a. Install timing chain tensioners (secondary) with a stopper pin attached and new O-rings.
b. Install camshaft brackets (No. 1). Refer to EM-88, "
INSTALLATION" .
2. Install rear timing chain case as follows:
a. Install new O-rings onto cylinder block.
b. Install new O-rings to cylinder head.
c. Apply liquid gasket with the tube presser [SST: WS39930000 ( — )] to rear 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" .
CAUTION:

For “A” in the figure, completely wipe out liquid gasket extended on a portion touching at
engine coolant.
PBIC0788E
SBIA0496E

EM-74
[VQ35DE]
TIMING CHAIN
Revision: 2006 December 2006 FX35/FX45

Apply liquid gasket on installation position of water pump and cylinder head very completely.
d. Align rear timing chain case and water pump assembly with dowel pins (right and left) on cylinder block and install rear timing chain case.

Make sure O-rings stay in place during installation to cylinder block and cylinder head.
e. Tighten mounting bolts in numerical order as shown in the fig- ure.

There are two type mounting bolts. Refer to the following for
locating bolts.
f. After all bolts are tightened, retighten them to the specified torque in numerical order shown in the figure.

If liquid gasket protrudes, wipe it off immediately. Bolt length: Bolt position
20 mm (0.79 in) : 1, 2, 3, 6, 7, 8, 9, 10
16 mm (0.63 in) : Except the above
: 12.7 N·m (1.3 kg-m, 9 ft-lb)
PBIC2680E
SEM735G

TIMING CHAIN EM-75
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Revision: 2006 December 2006 FX35/FX45
g. After installing rear 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.
3. Install water pump with new O-rings. Refer to CO-22, "
WATER PUMP" .
4. Make sure that dowel pin hole, dowel pin and crankshaft key are located as shown in the figure. (No. 1 cylinder at compression
TDC)
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.
CAUTION:
Hole on small dia. side must be used for intake side dowel pin hole. Do not misidentify (ignore big
dia. side).
5. Install timing chains (secondary) and camshaft sprockets as follows:
CAUTION:
Mating marks between timing chain and sprockets slip easily. Confirm all mating mark positions
repeatedly during the installation process.
a. Push plunger of timing chain tensioner (secondary) and keep it pressed in with a stopper pin. Standard
Rear timing chain case to cylinder block: –0.24 to 0.14 mm (–0.009 to 0.006 in)
SEM943G
Camshaft dowel pin hole (intake side): At cylinder head upper face side in each bank.
Camshaft dowel pin (exhaust side) : At cylinder head upper face side in each bank.
Crankshaft key : At cylinder head side of right bank.
KBIA1073E
SEM430G

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