2008 INFINITI FX35 Timing chain

EM-168
< SERVICE INFORMATION >[VK45DE]
NOISE, VIBRATION AND HARSHNESS
(NVH) TROUBLESHOOTING
3. Specify the operating condition of engine.
4. Check specified noise source.
If necessary, repair or replace these parts.
A: Closely related B: Related C: Sometimes related —: Not relatedLocation
of noise Type of
noise Operating condition of engine
Source of noise Check item
Refer-
ence page
Be-
fore
warm- up After
warm-
up When
start-
ing When
idling When
racing While
driving
Top of en-
gine
Rocker
cover
Cylinder
head Ticking or
clicking
C A — A B — Tappet noise Valve clearance
EM-218
Rattle C A — A B CCamshaft
bearing noiseCamshaft journal oil
clearance
Camshaft runout EM-211EM-211
Crank-
shaft pul-
ley
Cylinder
block
(Side of
engine)
Oil panSlap or
knock
—A—B B— Piston pin
noisePiston to piston pin oil
clearance
Connecting rod bushing
oil clearance EM-256
EM-256
Slap or
rap
A——B B A Piston slap
noisePiston to cylinder bore
clearance
Piston ring side clear-
ance
Piston ring end gap
Connecting rod bend
and torsion EM-256EM-256
EM-256
EM-256
Knock A B C B B B
Connecting
rod bearing
noiseConnecting rod bushing
oil clearance
Connecting rod bearing
oil clearance
EM-256EM-256
Knock A B — A B C
Main bearing
noiseMain bearing oil clear-
ance
Crankshaft runout EM-256EM-256
Front of
engine
front coverTapping or
ticking
AA—BBB Timing chain
and chain
tensioner
noiseTiming chain cracks
and wear
Timing chain tensioner
operation
EM-200
EM-199
Front of
engineSqueak-
ing or fizz-
ing
AB—B—C Drive belts
(Sticking or
slipping)Drive belts deflection
EM-170
Creaking A B A B A B Drive belts
(Slipping)Idler pulley bearing op-
eration
Squall
Creak AB—BAB Water pump
noise
Water pump operation
CO-50
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TIMING CHAINEM-199
< SERVICE INFORMATION > [VK45DE]
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TIMING CHAIN
ComponentINFOID:0000000001325788
1. Camshaft sprocket (EXH) 2. Camshaft sprocket (INT) 3. Camshaft sprocket (INT)
4. Camshaft sprocket (EXH) 5. Front cover 6.
Intake valve timing control solenoid
valve (right bank)
PBIC4570E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-200
< SERVICE INFORMATION >[VK45DE]
TIMING CHAIN
 Refer to
GI-8, "Component" for symbols in the figure.
Removal and InstallationINFOID:0000000001325789
REMOVAL
1. Remove engine assembly from vehicle. Refer to EM-237, "Component".
2. Remove the following components and related parts:  Drive belt auto tensioner and idler pulley: Refer to EM-172, "
Drive Belt Auto Tensioner and Idler Pulley".
 Thermostat housing and hoses: Refer to CO-52, "
Component".
 Ignition coil: Refer to EM-187, "
Component".
 Rocker cover: Refer to EM-196, "
Component".
3. If necessary, remove intake valve timing control position sensor (right and left bank) and camshaft position sensor (PHASE) from
intake valve timing control cover and front cover.
CAUTION:
 Handle carefully to avoid dropping and shocks.
 Do not disassemble.
4. If necessary, remove intake valve timing control solenoid valve from intake valve timing control cover. CAUTION:
 Handle components and parts caref ully 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 wh ere they are exposed to magnetism.
7. O-ring 8. Seal ring 9. Intake valve timing control position
sensor (right bank)
10. O-ring 11. Intake valve timing control cover
(right bank)
12.Intake valve timing control position
sensor (left bank)
13. O-ring 14. Intake valve timing control cover (left
bank)15. Seal ring
16. Intake valve timing control solenoid-
valve (left bank) 17. O-ring 18. Oil level gauge
19. Oil level gauge guide 20. O-ring 21. Crankshaft pulley bolt
22. Crankshaft pulley 23. Front oil seal 24. Chain tensioner cover
25. Camshaft position se nsor (PHASE) 26. O-ring 27. Oil pump drive spacer
28. Oil pump assembly 29. Crankshaft sprocket 30. O-ring
31. O-ring 32. Timing chain tension guide
(right bank)33.
Timing chain slack guide
(right bank)
34. Timing chain (right bank) 35. Timing chain (left bank) 36. Chain tensioner (left bank)
37. Chain tensioner (right bank) 38. Timing chain slack guide
(left bank)39.
Timing chain tension guide
(left bank)
40. O-ring
A. Refer to EM-200
PBIC0050E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TIMING CHAINEM-201
< SERVICE INFORMATION > [VK45DE]
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5. Remove intake valve timing control cover as follows:
a. Loosen and remove mounting bolts in the reverse order as
shown in the figure.
b. Use seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for removal.
CAUTION:
 Exercise care not to damage mating surfaces.
 Pull out cover keeping level ness without an angle, as
inner part of cover is engaged with the center of camshaft
sprocket (INT).
6. Remove O-rings from front cover.
7. Obtain No. 1 cylinder at TDC of its compression stroke as follows:
a. Rotate crankshaft pulley clockwise to align the TDC identifica- tion notch (without paint mark) with timing indicator on front
cover.
b. Make sure that both intake and exhaust cam noses of No. 1 cyl- inder (engine front side of left bank) are located as shown in the
figure.
 If not, turn crankshaft one revolution (360 degrees) and alignas shown in the figure.
8. Remove crankshaft pulley as follows:
PBIC0051E
SBIA0374E
PBIC2341E
KBIA0400J
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-202
< SERVICE INFORMATION >[VK45DE]
TIMING CHAIN
a. Remove rear plate cover, and set ring gear stopper (SST).
b. Loosen crankshaft pulley bolt, and then pull crankshaft pulley
with both hands to remove it.
CAUTION:
 Do not remove crankshaft pulley bolt. Keep loosenedcrankshaft pulley bolt in place to protect removed crank-
shaft pulley from dropping.
 Do not remove balance weight (inner hexagon bolt) at the
front of crankshaft pulley.
9. Remove oil pan and oil strainer. Refer to EM-183, "
Component".
10. Remove front cover as follows:
a. Loosen mounting bolts in reverse order as shown in the figure.
b. Use seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for removal.
CAUTION:
 Exercise care not to damage mating surfaces.
 After removal, handle front cover carefully so it does not
tilt, cant, or warp under a load.
11. Remove front oil seal from front cover using suitable tool.  Use screwdriver for removal.
CAUTION:
Be careful not to damage front cover.
12. Remove O-rings from cylinder heads (right and left bank) and
cylinder block.
13. Remove chain tensioner cover from front cover.  Use seal cutter [SST: KV10111100 (J37228)] to cut liquid gasket for remove.
14. Remove oil pump drive spacer.  Set bolts in the two bolt holes [M6 × pitch 1.0 mm (0.04 in)] on
front surface. Using suitable puller, pull oil pump drive spacer
off from crankshaft.
NOTE:
The dimension between the centers of the two bolt holes is 33
mm (1.30 in).
In the figure, a commercial steering puller is used.
15. Remove oil pump. Refer to LU-29, "
Component".
16. Remove chain tensioner (left bank) as follows:
PBIC1656E
KBIA0354J
SBIA0373E
PBIC2342E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TIMING CHAINEM-203
< SERVICE INFORMATION > [VK45DE]
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NOTE:
To remove timing chain and related parts, start with those on left bank. The procedure for removing parts
on right bank is omitted because it is
the same as that for left bank.
a. Press tab in the direction of arrow (or turn lever in the direction of arrow) to unlock the locking with the groove that stops ten-
sioner plunger from returning.
 Lightly press tensioner plunger to release the tension of springfor this operation.
b. Push in tensioner plunger to align the hole on lever and that on pump main body.
 Pushing in tensioner too far does not allow the holes to align.Therefore, push in plunger to the degree at which the start of
stopper groove and tab engages.
c. Insert stopper pin [hard wire with approx. 0.5 mm (0.020 in) diameter or similar tool] to fix plunger. With plunger fixed,
remove chain tensioner.
17. Remove chain tension guide and timing chain slack guide.
18. Remove timing chain and crankshaft sprocket. CAUTION:
After removing timing chain, do not turn cranksh aft and camshaft separately, or valves will strike
the piston head.
19. With hexagonal part of camshaft locked with wrench, loosen mounting bolts securing camshaft sprocket to remove camshaft
sprocket.
CAUTION:
Do not loosen mounting bolts with securing anything other
than the camshaft hexagonal porti on or with tensioning the
timing chain.
20. Perform same procedure as for left bank, remove timing chain and related parts on right side.
21. Use scraper to remove all traces of old liquid gasket from front cover and opposite mating surfaces.  Remove oil liquid gasket from bolt hole and thread.
22. Use scraper to remove all trace of liquid gasket from chain tensioner cover and intake valve timing control covers.
INSPECTION AFTER REMOVAL
Timing Chain
PBIC2343E
PBIC0030E
PBIC2084E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

EM-204
< SERVICE INFORMATION >[VK45DE]
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 above figure shows the relationship between the ma
ting mark on each timing chain and that on the cor-
responding sprocket, with the components installed.
 Parts with an identification mark (R or L) should be installed on the corresponding bank according to the
mark.
Parts with an identification mark:
- Camshaft sprocket (INT)
- Dowel pin groove of camshaft sprocket (EXH) (camshaft sprocket is same part both banks)
- Chain tension guide
- Chain slack guide
 To install timing chain and related parts, start with those on right bank. The procedure for installing parts on left bank is omitted because it is the sa me as that for installation on right bank.
PBIC0282E
PBIC2344E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C

TIMING CHAINEM-205
< SERVICE INFORMATION > [VK45DE]
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1. Make sure that crankshaft key and dowel pin of each camshaft
are located as shown in the figure. (No. 1 cylinder at compres-
sion 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.
2. Install camshaft sprockets.  Install onto correct side by checking with identification mark onsurface.
 Install camshaft sprocket (EXH) by selectively using the
groove of dowel pin according to the bank. (Common part
used for both banks.)
 Lock the hexagonal part of camshaft in the same procedure as for removal, and tighten mounting bolts.
3. Install crankshaft sprockets for both banks.  Install each crankshaft sprocket so that its flange side (thelarger diameter side without teeth) faces in the direction shown
in the figure.
NOTE:
The same parts are used but facing directions are different. Camshaft dowel pin
: At cylinder head upper face side in each bank
Crankshaft key : At cylinder head side of left bank
SBIA0356E
PBIC2345E
PBIC0057E
3AA93ABC3ACD3AC03ACA3AC03AC63AC53A913A773A893A873A873A8E3A773A983AC73AC93AC03AC3
3A893A873A873A8F3A773A9D3AAF3A8A3A8C3A863A9D3AAF3A8B3A8C