Engine INFINITI FX35 2004 Service Manual

FRONT TIMING CHAIN CASE
EM-55
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
17. Obtain compression TDC of No. 1 cylinder as follows:
NOTE:
When timing chain is not removed/installed, this step is not required.
a. Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.
b. Make sure 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°) and align as
shown.
NOTE:
When only primary timing chain is removed, rocker cover
does not need to be removed. To confirm that No. 1 cylinder is
at its compression TDC, remove front timing chain case first.
Then check mating marks on camshaft sprockets. Refer to
EM-63, "
TIMING CHAIN" .
18. Remove crankshaft pulley with the following procedure:
a. Remove rear cover plate (2WD) or starter motor (AWD) and set
ring gear stopper (SST) as shown in the figure. Refer to SC-10,
"STARTING SYSTEM" .
b. Loosen crankshaft pulley bolt and locate bolt seating surface as
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.
KBIA1717J
SEM418G
PBIC1098E
PBIC1103E

EM-58
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2004 November 2004 FX35/FX45
28. Use a scraper to remove all traces of liquid gasket from water
pump cover, chain tensioner cover and intake valve timing con-
trol covers.
INSTALLATION
1. Install timing chain and related parts. Refer to EM-63, "TIMING CHAIN" .
2. Hammer dowel pins (left and left) into front timing chain case up
to a point close to taper in order to shorten protrusion length.
3. Install front oil seal on front timing chain case.

Apply new engine oil to the oil seal edges.

Install it so that each seal lip is oriented as shown in the fig-
ure.

Using suitable drift, 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.
SEM926E
PBIC1101E
SEM715A
PBIC0790E

EM-62
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2004 November 2004 FX35/FX45
d. Put a paint mark on crankshaft pulley aligning with angle mark
on crankshaft pulley bolt. Then, further retighten bolt by “60”
degrees (equivalent to one graduation)].
11. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
12. For the following operations, perform steps in the reverse order of removal.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in the guide may gener-
ate a pounding noise during and just after engine start. However, this is normal. Noise will stop after
hydraulic pressure rises.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, lubrications and working fluid. If less than
required quantity, fill to the specified level.

Run engine to check for unusual noise and vibration.

Warm up engine thoroughly to make sure there is no leakage of engine coolant, engine oil and working
fluid, fuel and exhaust gas.

Bleed air from passages in pipes and tubes of applicable lines, such as in cooling system.

After cooling down engine, again check amounts of engine coolant, engine oil and working fluid. Refill to
specified level, if necessary.
Summary of the inspection items:
SEM751G
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Working fluid Level Leakage Level

EM-64
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
NOTE:

This section describes procedures for removing/installing front timing chain case and timing chain related
parts, and rear timing chain case, when oil pan (upper) needs to be removed/installed for engine overhaul,
etc.

To remove/install front timing chain case, timing chain, and its related parts without removing oil pan
(upper), refer to EM-54, "
FRONT TIMING CHAIN CASE" .
REMOVAL
1. Place vehicle onto lift.
2. Remove front tire.
3. Disconnect negative battery terminal.
4. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
5. Remove air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT" .
6. Remove front and rear engine undercover with power tool.
7. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
8. Drain engine oil from oil pan. Refer to LU-9, "
Changing Engine Oil" .
9. Remove engine harnesses.
10. Remove intake manifold collectors (upper and lower) with power tool. Refer to EM-19, "
INTAKE MANI-
FOLD COLLECTOR" .
11. Remove radiator cooling fan assembly. Refer to CO-21, "
COOLING FAN" .
12. Remove A/C compressor from bracket with piping connected, and temporarily secure it aside. Refer to
ATC-139, "
Components" .
13. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-31, "
POWER STEERING OIL PUMP" .
14. Remove power steering oil pump bracket. Refer to PS-31, "
POWER STEERING OIL PUMP" .
15. Remove alternator. Refer to SC-23, "
CHARGING SYSTEM" .
16. Remove water bypass hose, water hose clamp and idler pulley bracket from front timing chain case.
17. Remove right and left intake valve timing control covers with
power tool.

Loosen bolts in reverse order as shown in the figure.

U s 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 ) ] o r a n e q u i v a l e n t
tool to cut liquid gasket for removal.
CAUTION:
Shaft is internally jointed with intake camshaft sprocket
center hole. When removing, keep it horizontal until it is
completely disconnected.
1. Timing chain tensioner (secondary) 2. Internal chain guide 3. Timing chain tensioner (secondary)
4. Camshaft sprocket (EXH) 5. Timing chain (secondary) 6. Timing chain (primary)
7. Camshaft sprocket (INT) 8. Camshaft sprocket (EXH) 9. Timing chain (secondary)
10. Camshaft sprocket (INT) 11. Slack guide 12. Crankshaft sprocket
13. Timing chain tensioner (primary) 14. Intake valve timing control cover 15. Collared O-ring
16. O-ring 17. Chain tensioner cover 18. Intake valve timing control cover
19. Water hose clamp 20. Idler pulley bracket 21. Idler pulley
22. Crankshaft pulley 23. Front oil seal 24. Idler pulley
25. A/C compressor bracket 26. Water pump cover 27. Bracket
28. Front timing chain case 29. Bracket 30. Rear timing chain case
31. O-ring 32. Tension guide 33. Water drain plug (front side)
SEM728G

TIMING CHAIN
EM-65
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 FX35/FX45
18. Remove collared O-ring from front timing chain case (left and
right side).
19. Remove right and left rocker covers. Refer to EM-51, "
ROCKER COVER" .
20. Obtain compression TDC of No. 1 cylinder as follows:
a. Rotate crankshaft pulley clockwise to align timing mark (grooved
line without color) with timing indicator.
b. Make sure 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°) and align as
shown.
21. Remove crankshaft pulley with the following procedure:
a. Remove rear cover plate (2WD) or starter motor (AWD) and set
ring gear stopper (SST) as shown in the figure. Refer to SC-10,
"STARTING SYSTEM" .
PBIC2045E
KBIA1717J
SEM418G
PBIC1098E

TIMING CHAIN
EM-69
[VQ35DE]
C
D
E
F
G
H
I
J
K
L
MA
EM
Revision: 2004 November 2004 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:

Handle carefully to avoid any shock to camshaft
sprocket.

Do not disassemble. (Do not loosen bolts “A” and “B”
as shown in the figure).
31. Remove rear timing chain case as follows:
a. Loosen and remove mounting bolts in reverse order as shown in
the figure.
b . C u t s e a l a n t u s i n g a 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 ) ] o r
an equivalent tool and remove rear timing chain case.
CAUTION:

Do not remove plate metal cover of engine oil passage.

After removing chain case, do not apply any load which
affects flatness.
PBIC1978E
SEM734G
SEM735G
KBIA1307E

EM-72
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
1. Install timing chain tensioners (secondary) to cylinder head as the following if removed. Refer to EM-87,
"INSTALLATION" .
a. Install chain tensioners with stopper pin attached and new O-rings.
b. Install No. 1 camshaft brackets. Refer to EM-87, "
INSTALLATION" .
2. Install new O-rings onto cylinder block.
3. Install new O-rings to cylinder head.
4. Apply liquid gasket to rear timing chain case back side as shown with tube presser [SST: WS39930000 ( –
)].
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-76
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
10. Pull stopper pins out from timing chain tensioners (secondary).
11. Install primary timing chain as follows:
a. Install crankshaft sprocket.

Make sure the mating marks on crankshaft sprocket face the
front of engine.
b. Install primary timing chain.

Install primary timing chain so the mating mark (punched) on
camshaft sprocket is aligned with the yellow link on timing
chain, while the mating mark (notched) on crankshaft
sprocket is aligned with the orange one on timing chain, as
shown.

When it is difficult to align mating marks of primary timing
chain with each sprocket, gradually turn camshaft using a
wrench on the hexagonal portion to align it with the mating
marks.

During alignment, be careful to prevent dislocation of mating
mark alignments of secondary timing chains.
SEM923G
SEM929E
PBIC1132E

EM-78
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
16. Install new O-rings on rear timing chain case.
17. Install front oil seal on front timing chain case.

Apply new engine oil to the oil seal edges.

Install it so that each seal lip is oriented as shown in the fig-
ure.

Using suitable drift, 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.
18. Install water pump cover and chain tensioner cover to front tim-
ing chain case.

Apply liquid gasket to front timing chain case front side as
shown in the figure with tube presser [SST: WS39930000 ( –
)].
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
SBIA0497E
SEM715A
PBIC0790E
SEM744GA

EM-80
[VQ35DE]
TIMING CHAIN
Revision: 2004 November 2004 FX35/FX45
c. Install collared O-ring in front cover engine oil hole (left and right
sides).
d. Being careful not to move seal ring from the installation groove,
align dowel pins on chain case with the holes to install intake
valve timing control covers.
e. Tighten bolts in the numerical order as shown in the figure.
22. Install crankshaft pulley as follows:
a. Fix crankshaft using ring gear stopper [SST: KV10117700 (J-44716)].
b. Install crankshaft pulley, taking care not to damage front oil seal.

When press-fitting crankshaft pulley with a plastic hammer, tap on its center portion (not circumfer-
ence).
c. Tighten bolt.
d. Put a paint mark on crankshaft pulley aligning with angle mark
on crankshaft pulley bolt. Then, further retighten bolt by “60”
degrees (equivalent to one graduation).
23. Rotate crankshaft pulley in normal direction (clockwise when viewed from front) to confirm it turns
smoothly.
24. For the following operations, perform steps in the reverse order of removal.
NOTE:
If hydraulic pressure inside chain tensioner drops after removal/installation, slack in guide may generate a
pounding noise during and just after engine start. However, this does not indicate an unusualness. Noise
will stop after hydraulic pressure rises.
INSPECTION AFTER INSTALLATION

Before starting engine, check the levels of engine coolant, lubrications and working fluid. If less than
required quantity, fill to the specified level.

Run engine to check for unusual noise and vibration.
PBIC2045E
PBIC0918E
: 44.1 N·m (4.5 kg-m, 33 ft-lb)
SEM751G