Nissan Murano. Manual — part 631
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CAMSHAFT
CAMSHAFT
Exploded View
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1.
Camshaft bracket (No. 3, 4)
2.
Camshaft bracket (No. 2)
3.
Seal washer
4.
Camshaft bracket (No. 1)
5.
Dowel pin
6.
Camshaft (EXH) (bank 1)
7.
Camshaft (INT) (bank 1)
8.
Valve lifter
9.
Timing chain tensioner (secondary)
(bank 1)
10. Spring
11.
Plunger
12.
Timing chain tensioner (secondary)
(bank 2)
13. Cylinder head (bank 2)
14.
Dowel pin
15. Camshaft sensor bracket (bank 2)
16. Camshaft (EXH) (bank 2)
17.
Camshaft signal plate (bank 2)
18. Camshaft (INT) (bank 2)
19. Cylinder head (bank 1)
20.
Camshaft signal plate (bank 1)
21. Camshaft sensor bracket (bank 1)
A.
Comply with the installation proce-
dure when tightening. Refer to
: Always replace after every disassembly.
: N·m (kg-m, ft-lb)
: N·m (kg-m, in-lb)
: Should be lubricated with oil.
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Removal and Installation
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REMOVAL
1.
Remove front timing chain case, camshaft sprocket, timing chain and rear timing chain case. Refer to
.
2.
Loosen camshaft sensor bracket bolts in the reverse order as
shown in the figure.
NOTE:
The order of loosening bolts in the same for bank 1 and bank 2.
3.
Remove camshaft brackets.
• Mark camshafts, camshaft brackets and bolts so they are placed in the same position and direction for
installation.
• Equally loosen camshaft bracket bolts in several steps in the
reverse order as shown in the figure.
4.
Remove camshafts.
5.
Remove valve lifters.
• Identify installation positions, and store them without mixing them up.
: Sealing point
: Select with proper thickness.
: Engine front
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: Engine front
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< UNIT DISASSEMBLY AND ASSEMBLY >
CAMSHAFT
6.
Remove timing chain tensioners (secondary) (1) from cylinder
head.
• Remove timing chain tensioner (secondary) with its stopper
pin (C) attached.
NOTE:
Stopper pin was attached when timing chain (secondary) was
removed.
INSTALLATION
CAUTION:
Do not reuse washers.
1.
Install timing chain tensioners (secondary) (1) on both sides of
cylinder head.
• Install timing chain tensioner (secondary) with its stopper pin
(C) attached.
• Install timing chain tensioner (secondary) with sliding part fac-
ing downward on cylinder head (bank 1), and with sliding part
facing upward on cylinder head (bank 2).
2.
Install valve lifters.
• Install it in the original position.
3.
Install camshafts.
• Follow your identification marks made during removal, or fol-
low the identification marks that are present on new camshafts
for proper placement and direction.
• Install camshaft so dowel pin (A) on front end face are posi-
tioned as shown in the figure. (No. 1 cylinder TDC on its com-
pression stroke)
NOTE:
Though camshaft does not stop at the portion 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.
4.
Install camshaft brackets.
A
: Bank 1
B
: Bank 2
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A
: Bank 1
B
: Bank 2
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: Engine front
Bank
INT/EXH
Dowel pin
(1)
Paint marks
M1 (D)
M2 (E)
M3 (C)
1
EXH (B)
Yes
No
Light blue
Light blue
INT (A)
Yes
Pink
No
Light blue
2
INT (A)
Yes
Pink
No
Light blue
EXH (B)
Yes
No
Light blue
Light blue
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• Remove foreign material completely from camshaft bracket backside and from cylinder head installation
face.
• Install camshaft bracket in original position and direction as
shown in the figure.
• Install camshaft brackets (No. 2 to 4) aligning the stamp marks
(A) 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 bank 1 and bank 2.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-22, "Recommended Chemical Products and Sealants"
.
A
: No. 1
B
: No. 2
C
: No. 3
D
: No. 4
E
: Bank 1
F
: Exhaust side
G
: Intake side
H
: Bank 2
I
: Intake side
J
: Exhaust side
: Engine front
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B
: Bank 1
C
: Bank 2
: Engine front
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a
: 8.5 mm (0.335 in)
b
: 2 mm (0.08 in)
c
: Clearance 5 mm (0.20 in)
d
:
φ
2.0 - 2.3 mm (0.079 - 0.091 in)
*
: Apply liquid gasket to rear timing chain case side
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