2007 NISSAN 350Z Engine Mechanical Workshop Manual

TIMING CHAIN
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13. Remove O-ring (1) from rear timing chain case.
14. Remove front oil seal from front timing chain case using suitable
tool.

Use screwdriver for removal.
CAUTION:
Be careful not to damage front timing chain case.
15. 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).
A : Right bank
B : Left bank
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TIMING CHAIN
Revision: 2006 November2007 350Z
16. Remove internal chain guide (1) and slack guide (2).
17. 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.
18. 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 (0.02 in) dia. hard metal pin as a
stopper pin.

For removal of timing chain tensioner (secondary), refer to
EM-72, "
CAMSHAFT" . [Removing camshaft bracket (No. 1)
is required.]
b. Remove intake and exhaust camshaft sprocket bolts.

Secure the hexagonal portion of camshaft using wrench to
loosen mounting bolts.
CAUTION:
Do not loosen 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.
CAUTION:

Handle carefully to avoid any shock to camshaft sprocket.
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Do not disassemble. (Do not loosen bolts “A” and “B” as
shown in the figure.)
NOTE:
Camshaft sprocket (INT) is two-for-one structure of primary and
secondary sprockets.
19. Remove water pump. Refer to CO-23, "
WATER PUMP" .
20. 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 l i q u i d g a s k e t u s i n g 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 ) ]
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.
21. Remove O-rings from cylinder block.
22. Remove timing chain tensioners (secondary) from cylinder head as follows, if necessary.
a. Remove camshaft brackets (No. 1). Refer to EM-72, "
REMOVAL" .
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b. Remove timing chain tensioners (secondary) with stopper pin
attached.
23. Use scraper to remove all traces of old liquid gasket from front
and rear timing chain cases, and opposite mating surfaces.

Remove old liquid gasket from bolt hole and thread.
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
corresponding sprocket, with the components installed.
SEM430G
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TIMING CHAIN
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In this figure, the drum of exhaust side camshaft sprocket has been omitted.
1. Install timing chain tensioners (secondary) to cylinder head as follows if removed. Refer to EM-77,
"INSTALLATION" .
a. Install timing chain tensioners (secondary) with stopper pin attached and new O-ring.
b. Install camshaft brackets (No. 1). Refer to EM-77, "
INSTALLATION" .
2. Measure difference in levels between front end faces of cam-
shaft bracket (No.1) and cylinder head.

Measure two positions (Both intake and exhaust side) for a
single bank.

If the measured value is out of the standard, re-install cam-
shaft bracket (No.1).
3. Install rear timing chain case as follows:
1. Internal chain guide 2. Camshaft sprocket (INT) 3. Timing chain (secondary)
4. Camshaft sprocket (EXH) 5. Timing chain tensioner (primary) 6. Slack guide
7. Timing chain (primary) 8. Crankshaft sprocket 9. Water pump
10. Timing chain tensioner (secondary)
A. Mating mark [punched (back side)] B. Mating mark (yellow link) C. Mating mark (punched)
D. Mating mark (orange link) E. Mating mark (notched) F. Crankshaft key
Standard : −0.14 to 0.14 mm (−0.0055 to 0.0055 in)
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a. Install new O-rings onto cylinder block.
b. Apply liquid gasket with 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-45, "
RECOMMENDED CHEMICAL
PRODUCTS AND SEALANTS" .
CAUTION:

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

Apply liquid gasket on installation position of water pump and cylinder head very completely.

Refer to GI-11, "Components" for symbol marks in the figure.
PBIC0788E
C. Protrusion D. Clearance 1 mm (0.04 in) E. Do not protrude in this area
F. Run along bolt hole inner side G.Protrusions at beginning and end of
gasket
h. 3.9 mm (0.154 in) i 2.7 mm (0.106 in)
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c. 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.
d. Tighten mounting bolts in numerical order as shown in the fig-
ure.

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

If liquid gasket protrudes, wipe it off immediately.
f. After installing rear timing chain case, check the surface height
difference between following parts on oil pan (upper) mounting
surface.

If not within standard, repeat the installation procedure.
4. Install water pump with new O-rings. Refer to CO-23, "
WATER PUMP" .
5. Make sure that dowel pin (A) and crankshaft key (1) 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.
6. Install timing chains (secondary) and camshaft sprockets as follows:
CAUTION:

When replacing camshaft sprocket (EXH), replace valve timing control cover (including magnet
retarder and cover).

Mating marks between timing chain and sprockets slip easily. Confirm all mating mark positions
repeatedly during the installation process.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)
PBIC4976E
1 : Front timing chain case
2 : Rear timing chain case
3 : Lower cylinder block
Standard
Rear timing chain case to cylinder block:
–0.24 to 0.14 mm (–0.0094 to 0.0055 in)
PBIC4981E
Camshaft dowel pin
: At cylinder head upper face side in each bank.
Crankshaft key
: At cylinder head side of right bank.
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a. Push plunger of timing chain tensioner (secondary) and keep it
pressed in with stopper pin.
b. Install timing chains (secondary) and camshaft sprockets.
NOTE:
Figure shows right bank (rear view).

Align the mating marks on timing chain (secondary) (orange
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 hole on the small diameter side of the camshaft front end with dowel pin on the back
side of camshaft sprockets, 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 step “d”. Tightening them by hand is
enough to prevent the dislocation of dowel pins.
c. Make sure that timing chain (secondary) is not loose from each camshaft sprocket.

Make sure the mating marks (punched) (D) on each camshaft
sprocket are positioned on the mating marks (orange link) (C)
on timing chain (secondary).
NOTE:
Mating mark (punched) in the figure is for checking loose at
this step.
SEM430G
A : Camshaft sprocket (INT) back face
B : Orange link
C : Dowel groove or hole
D : Mating mark (oval)
E : Mating mark (2 oval)
F : Mating mark (circle)
G : Camshaft sprocket (EXH) back face
H : Mating mark (2 circle)
I : Timing chain (secondary)
Right bank : Use circle type (F, H)
Left bank : Use oval type (D, E)
A : Intake side
B : Exhaust side
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