Infiniti Q45. Manual - part 555

ROCKER COVER

EM-37

C

D

E

F

G

H

I

J

K

L

M

A

EM

ROCKER COVER

PFP:13264

Removal and Installation

NBS001OQ

REMOVAL

1.

Refer to the following for removal works related to left-bank. 

a.

Remove engine cover (with power tool) and air cleaner cover. Refer to 

EM-13, "Removal and Installation"

.

b.

Remove air duct (inlet), air duct and air cleaner case assembly. Refer to 

EM-17, "Removal and Installa-

tion"

 .

c.

Remove bracket (installation parts for No.6 camshaft bracket). Refer to 

EM-50, "CAMSHAFT"

 .

d.

Move harness on upper rocker cover and its peripheral aside.

e.

Remove ignition coil. Refer to 

EM-29, "Removal and Installation"

 .

f.

Remove PCV valve hose from PCV valve.

2.

Refer to the following for removal works related to right-bank.

a.

Remove engine cover (with power tool) and battery cover. Refer to 

EM-13, "Removal and Installation"

 .

b.

Move harness on upper rocker cover and its peripheral aside.

c.

Remove ignition coil 

EM-29, "Removal and Installation"

 .

d.

Remove PCV valve hose from PCV valve.

3.

Remove PCV valves and O-rings from rocker covers (right and left bank), if necessary.

4.

Remove oil filler cap and oil catcher from rocker cover (right bank), if necessary.

1.

Rocker cover (left bank)

2.

PCV valve

3.

O-ring

4.

Rocker cover gasket (left bank)

5.

Rocker cover (right bank)

6.

PCV valve

7.

O-ring

8.

Oil filler cap

9.

Oil catcher

10.

Rocker cover gasket (right bank)

PBIC2353E

EM-38

ROCKER COVER

5.

Loosen bolts in the reverse order shown in the figure (with
power tool).

CAUTION:

Do not hold oil filler neck (right bank) not to damage it.

6.

Remove rocker cover gaskets from rocker covers (right and left bank).

7.

Use scraper to remove all traces of liquid gasket from cylinder head and camshaft bracket (No. 1 and 6).

CAUTION:

Do not scratch or damage the mating surface when cleaning off oil liquid gasket.

INSTALLATION

1.

Apply liquid gasket to joint part of cylinder head and camshaft
bracket as follows:

NOTE:
Figure shows an example of left-bank side (zoomed in shows
No.1 camshaft bracket). Apply only to No.1 camshaft bracket for
right-bank side.

a.

Refer to figure “a” to apply liquid gasket to joint part of No.1 and
No.6 camshaft bracket and cylinder head.

b.

Refer to figure “b” to apply liquid gasket in 90 degrees to figure
“a”.
Use Genuine RTV Silicone Sealant or equivalent. Refer to

GI-45, "RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS"

 .

2.

Install rocker cover.

●

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

3.

Tighten bolts in two steps separately in numerical order as
shown in the figure.

CAUTION:

Do not hold oil filler neck (right bank) not to damage it.

4.

Install in the reverse order of removal. 

PBIC0027E

PBIC2444E

1st step

 : 2.0 N·m (0.2 kg-m, 18 in-lb)

2nd step

 : 8.3 N·m (0.85 kg-m, 73 in-lb)

PBIC0027E

TIMING CHAIN

EM-39

C

D

E

F

G

H

I

J

K

L

M

A

EM

TIMING CHAIN

PFP:13028

Removal and Installation

NBS001OR

PBIC4128E

EM-40

TIMING CHAIN

REMOVAL

1.

Remove engine assembly from vehicle. Refer to 

EM-79, "Removal and Installation"

 .

2.

Remove the following components and related parts:

●

Drive belt auto tensioner and idler pulley; Refer to 

EM-15, "Drive Belt Auto Tensioner and Idler Pulley"

 .

●

Thermostat housing and hoses; Refer to 

CO-22, "Removal and Installation"

 .

●

Ignition coil; Refer to 

EM-29, "Removal and Installation"

 .

●

Rocker cover; Refer to 

EM-37, "Removal and Installation"

 .

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 components and parts 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 carefully to avoid dropping
and shocks.

●

Do not disassemble.

5.

Remove intake valve timing control cover as follows: 

a.

Loosen and remove fixing bolts in reverse order of that shown in
figure. 

b.

Use the seal cutter [SST: KV10111100 (J-37228)] or the equiva-
lent to cut liquid gasket for removal.

CAUTION:

●

Be careful not to damage mating surfaces.

●

Pull out cover keeping levelness without an angle, as
inner part of cover is engaged with the center of camshaft
sprocket (INT).

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)

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 sensor (PHASE)

26. O-ring

27. Oil pump drive spacer

28. Oil pump assembly

29. Crankshaft sprocket

30. O-ring

31. O-ring

32.

Chain tension guide 
(right bank)

33.

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.

Chain slack guide
(left bank)

39.

Chain tension guide 
(left bank)

40. O-ring

PBIC0050E

PBIC0051E