2006 INFINITI M35 crankshaft

EM-206
[VK45DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
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 loosened
crankshaft 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-187, "
OIL PAN AND OIL STRAINER" .
10. Remove front cover as follows:
a. Loosen mounting bolts in reverse order as shown in the figure.
b . 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 ) ] t o c u t l i q u i d g a s ket
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-30, "
OIL PUMP" .
16. Remove chain tensioner (left bank) as follows:
PBIC1656E
KBIA0354J
SBIA0373E
PBIC2342E

TIMING CHAIN
EM-207
[VK45DE]
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Revision: 2006 January2006 M35/M45
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
spring for 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 crankshaft 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 portion 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.
PBIC2343E
PBIC0030E
PBIC2084E

TIMING CHAIN
EM-209
[VK45DE]
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Revision: 2006 January2006 M35/M45
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
on surface.
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 (the
larger 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

EM-210
[VK45DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
4. Install timing chains and related parts.
Align the mating mark on each sprocket and timing chain for installation.
NOTE:
Before installing chain tensioner, it is possible to change the position of mating mark on timing chain for
that on each sprocket for alignment.
CAUTION:
For the above reason, after the mating marks are aligned, keep them aligned by holding them
with a hand.
Install slack guides and tension guides onto correct side by checking with identification mark on sur-
face.
Install chain tensioner with plunger fixed as described in its removal.
CAUTION:
Before and after the installation of chain tensioner, make sure that the mating mark on timing
chain is not out of alignment.
After installing chain tensioner, remove stopper pin to release tensioner. Make sure tensioner
is released.
To avoid chain-link skipping of timing chain, do not move crankshaft or camshafts until front
cover is installed.
5. Perform the same procedure as for right bank, install timing chain and related parts on left side.
6. Install oil pump. Refer to LU-30, "
OIL PUMP" .
PBIC2344E

TIMING CHAIN
EM-213
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Revision: 2006 January2006 M35/M45
b. Install new O-rings on front cover.
c. Apply a continuous bead of liquid gasket with tube presser [SST:
WS3930000 ( — )] to intake valve timing control covers as
shown in the figure.
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS".
d. Tighten mounting bolts in numerical order as shown in the fig-
ure.
12. Install intake valve timing control position sensor, intake valve timing control solenoid valve and camshaft
position sensor (PHASE) to intake valve timing control cover and front cover if removed.
Be sure to tighten mounting bolts with flanges completely seated.
13. Install oil pan and oil strainer. Refer to EM-187, "
OIL PAN AND OIL STRAINER" .
14. Install crankshaft pulley as follows:
a. Fix crankshaft with ring gear stopper [SST: J-45476].
b. Install crankshaft pulley, taking care not to damage front oil seal.
Install according to dowel pin of oil pump drive spacer.
Lightly tapping its center with plastic hammer, insert pulley.
CAUTION:
Do not tap pulley on the side surface where belt is installed (outer circumference).
c. Apply engine oil onto threaded parts of crankshaft pulley bolt and seating area.
d. Tighten crankshaft pulley bolt.
e. Put a paint mark on crankshaft pulley aligning with angle mark on crankshaft pulley bolt.
SBIA0374E
SBIA0375E
PBIC0051E
: 93.1 Nꞏm (9.5 kg-m, 69 ft-lb)

EM-214
[VK45DE]
TIMING CHAIN
Revision: 2006 January2006 M35/M45
f. Further tighten by 90 degrees. (Angle tightening)
Check the tightening angle by referencing to the notches. The
angle between two notches is 90 degrees.
15. Rotate crankshaft pulley in normal direction (clockwise when viewed from engine front) to confirm it turns
smoothly.
16. Install in the reverse order of removal after this step.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
PBIC2346E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —

EM-216
[VK45DE]
CAMSHAFT
Revision: 2006 January2006 M35/M45
3. With hexagonal part of camshaft locked with wrench, loosen
bolts securing camshaft sprocket to remove camshaft sprocket.
CAUTION:
Do not loosen mounting bolts with securing anything
other than the camshaft hexagonal portion or with ten-
sioning the timing chain.
After removing timing chain, do not turn crankshaft and
camshaft separately, or valves will strike the piston head.
4. Remove intake and exhaust camshaft brackets.
Mark camshafts, camshaft brackets and bolts so placed in the same position and direction for installa-
tion.
Equally loosen camshaft brackets and bolts in several steps in
reverse order as shown in the figure.
Lightly tapping with plastic hammer, remove camshaft bracket
(No. 1) and camshaft bracket (No. 6).
NOTE:
The bottom surface of each bracket will be stuck to cylinder
head because of liquid gasket.
5. Remove camshaft.
6. Remove adjusting shim and valve lifter if necessary.
Identify installation positions, and store them without mixing them up.
INSPECTION AFTER REMOVAL
Camshaft Runout
1. Put V-block on precise flat table, and support No. 2 and 5 journal
of camshaft.
CAUTION:
Do not support journal No. 1 (on the side of camshaft
sprocket) because it has a different diameter from the other
four locations.
2. Set dial indicator vertically to No. 3 journal.
3. Turn camshaft to one direction with hands, and measure the
camshaft runout on dial indicator (total indicator reading).
PBIC0030E
PBIC0031E
Standard:
0.02 mm (0.001 in)PBIC2499E

EM-222
[VK45DE]
CAMSHAFT
Revision: 2006 January2006 M35/M45
4. Crank the engine, and then make sure that engine oil comes out
from intake valve timing control cover oil hole. End crank after
checking.
WA R N I N G :
Be careful not to touch rotating parts (drive belt, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
Engine oil may squirt from intake valve timing control sole-
noid valve installation hole during cranking. Use a shop
cloth to prevent the engine components and the vehicle. Do
not allow engine oil to get on rubber components such as
drive belt or engine mount insulators. Immediately wipe off
any splashed engine oil.
Clean oil groove between oil strainer and intake valve timing control solenoid valve if engine oil does not
come out from intake valve timing control cover oil hole. Refer to LU-24, "
LUBRICATION SYSTEM" .
5. Remove components between intake valve timing control solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.
Clean oil groove if necessary. Refer to LU-24, "LUBRICATION SYSTEM" .
6. After inspection, install removed parts.
INSPECTION AFTER INSTALLATION
Inspection for Leaks
The following are procedures for checking fluids leak, lubricates leak and exhaust gases leak.
Before starting engine, check oil/fluid levels including engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-12, "
RECOMMENDED FLUIDS AND LUBRICANTS" .
Use procedure below to check for fuel leakage.
–Turn ignition switch “ON” (with engine stopped). With fuel pressure applied to fuel piping, check for fuel
leakage at connection points.
–Start engine. With engine speed increased, check again for fuel leakage at connection points.
Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner drops after removal/installation, slack in guide may gen-
erate a pounding noise during and just after engine start. However, this does not indicate an unusualness.
Noise will stop after hydraulic pressure rises.
Warm up engine thoroughly to make sure there is no leakage of fuel, exhaust gases, or any oil/fluids
including engine oil and engine coolant.
Bleed air from lines and hoses of applicable lines, such as in cooling system.
After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to the
specified level, if necessary.
Summary of the inspection items:
* Transmission/transaxle/CVT fluid, power steering fluid, brake fluid, etc.
Valve ClearanceNBS004PB
INSPECTION
In cases of removing/installing or replacing camshaft and valve-related parts, or of unusual engine conditions
due to changes in valve clearance (found malfunctions during starting, idling or causing noise), perform
inspection as follows:
1. Remove rocker covers (right and left bank). Refer to EM-199, "
ROCKER COVER" .
PBIC2848E
Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Other oils and fluid* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gases — Leakage —