INFINITI M35 2006 Factory Service Manual

EM-48
[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
Revision: 2006 January2006 M35/M45
Lubricate O-ring with new engine oil.
Do not clean O-ring with solvent.
Make sure that O-ring and its mating part are free of foreign material.
When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not
to twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.
Insert new O-ring straight into fuel tube. Do not decenter or twist it.
Insert fuel damper and fuel sub-tube straight into fuel tube.
Tighten mounting bolts evenly in turn.
After tightening mounting bolts, make sure that there is no gap between flange and fuel tube.
2. Install new O-rings to fuel injector, paying attention to the following.
CAUTION:
Upper and lower O-ring are different. Be careful not to confuse them.
Handle O-ring with bare hands. Do not wear gloves.
Lubricate O-ring with new engine oil.
Do not clean O-ring with solvent.
Make sure that O-ring and its mating part are free of foreign material.
When installing O-ring, be careful not to scratch it with tool or fingernails. Also be careful not to
twist or stretch O-ring. If O-ring was stretched while it was being attached, do not insert it
quickly into fuel tube.
Insert O-ring straight into fuel injector. Do not decenter or twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip into clip mounting groove on fuel injector.
Insert clip so that protrusion “A” of fuel injector matches cutout
“A” of clip.
CAUTION:
Do not reuse clip. Replace it with a new one.
Be careful to keep clip from interfering with O-ring. If
interference occurs, replace O-ring.
b. Insert fuel injector into fuel tube with clip attached.
Insert it while matching it to the axial center.
Insert fuel injector so that protrusion “B” of fuel tube matches
cutout “B” of clip.
Make sure that fuel tube flange is securely fixed in flange fix-
ing groove on clip.
c. Make sure that installation is complete by checking that fuel
injector does not rotate or come off.
Make sure that protrusions of fuel injectors are aligned with
cutouts of clips after installation.
4. Install spacers on intake manifold.
5. Install fuel tube and fuel injector assembly to intake manifold.
CAUTION:
Be careful not to let tip of injector nozzle come in contact with other parts. Fuel tube side : Black
Nozzle side : Green
PBIC2545E

FUEL INJECTOR AND FUEL TUBE
EM-49
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Revision: 2006 January2006 M35/M45
Tighten mounting bolts in two steps in numerical order as
shown in the figure.
6. Connect injector sub-harness.
7. Install intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
8. Install fuel sub-tube on rear end of intake manifold collector (lower).
9. Connect fuel feed hose (with damper).
Handling procedure of O-ring is the same as that of fuel damper and fuel sub-tube.
Insert fuel damper straight into fuel sub-tube.
Tighten mounting bolts evenly in turn.
After tightening mounting bolts, make sure that there is no gap between flange and fuel sub-tube.
10. Connect quick connector between fuel feed hose (with damper) and centralized under-floor piping con-
nection as follows:
a. Make sure no foreign substances are deposited in and around centralized under-floor piping and quick
connector, and no damage on them.
b. Thinly apply new engine oil around centralized under-floor piping from tip end to spool end.
c. Align center to insert quick connector straightly into centralized under-floor piping.
Insert quick connector to centralized under-floor piping until
top spool is completely inside quick connector, and 2nd level
spool exposes right below quick connector.
CAUTION:
Hold “A” position as shown in the figure when inserting
centralized under-floor piping into quick connector.
Carefully align center to avoid inclined insertion to pre-
vent damage to O-ring inside quick connector.
Insert until you hear a “click” sound and actually feel the
engagement.
To avoid misidentification of engagement with a similar
sound, be sure to perform the next step.
d. Pull quick connector by hand holding “A” position. Make sure it is completely engaged (connected) so that
it does not come out from centralized under-floor piping.
e. Install quick connector cap to quick connector connection.
Install quick connector cap with arrow on surface facing in
direction of quick connector (fuel feed hose side).
CAUTION:
If quick connector cap cannot be installed smoothly, quick
connector may have not been installed correctly. Check the
connection again.
11. Install in the reverse order of removal after this step. 1st step
: 10.1 Nꞏm (1.0 kg-m, 7 ft-lb)
2nd step
: 23.6 Nꞏm (2.4 kg-m, 17 ft-lb)
KBIA1296E
PBIC2471E
KBIA1298E

EM-50
[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
Revision: 2006 January2006 M35/M45
INSPECTION AFTER INSTALLATION
Check on Fuel Leakage
1. Turn ignition switch “ON” (with the engine stopped). With fuel pressure applied to fuel piping, make sure
there are no fuel leaks at connection points.
NOTE:
Use mirrors for checking at points out of clear sight.
2. Start the engine. With engine speed increased, make sure again that there are no fuel leaks at connection
points.
CAUTION:
Do not touch the engine immediately after stopped, as the engine becomes extremely hot.

ROCKER COVER
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Revision: 2006 January2006 M35/M45
ROCKER COVERPFP:13264
ComponentsNBS004NG
Removal and InstallationNBS004NH
REMOVAL
1. Release the fuel pressure. Refer to EC-98, "FUEL PRESSURE RELEASE" .
2. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
3. Separate engine harness removing their brackets from rocker covers.
4. Remove ignition coil. Refer to EM-42, "
IGNITION COIL" .
5. Remove PCV hoses from rocker covers.
6. Remove PCV valve and O-ring from rocker cover (right bank), if necessary.
7. Remove oil filler cap and oil catcher from rocker cover (left bank), if necessary.
1. PCV hose 2. Oil filler cap 3. Oil catcher
4. Rocker cover (right bank) 5. PCV control valve 6. O-ring
7. Rocker cover gasket 8. Rocker cover (left bank)
PBIC2303E

EM-52
[VQ35DE]
ROCKER COVER
Revision: 2006 January2006 M35/M45
8. Loosen mounting bolts with power tool in reverse order as
shown in the figure.
9. Remove rocker cover gaskets from rocker covers.
10. Use a scraper to remove all trances of liquid gasket from cylinder head and camshaft bracket (No. 1).
CAUTION:
Do not scratch or damage the mating surface when cleaning off old liquid gasket.
INSTALLATION
1. Apply liquid gasket with the tube presser [SST: WS39930000
( — )] to joint part among rocker cover, cylinder head and
camshaft bracket (No. 1) as follows:
Use Genuine RTV Silicone Sealant or equivalent. Refer to
GI-48, "
RECOMMENDED CHEMICAL PRODUCTS AND
SEALANTS" .
NOTE:
The figure shows an example of left bank side [zoomed in
shows camshaft bracket (No. 1)].
a. Refer to the figure “a” to apply liquid gasket to joint part of cam-
shaft bracket (No. 1) and cylinder head.
b. Refer to the figure “b” to apply liquid gasket to the figure “a”
squarely.
2. Install new rocker cover gasket to rocker cover.
3. Install rocker cover.
Check if rocker cover gasket is not dropped from installation groove of rocker cover.
KBIA0985E
PBIC2474E

ROCKER COVER
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Revision: 2006 January2006 M35/M45
4. Tighten bolts in two steps separately in numerical order as
shown in the figure.
5. Install oil catcher and oil filer cap to rocker cover (left bank), if removed.
6. Install new O-ring and PCV valve to rocker cover (right bank), if removed.
7. Install PCV hose.
Insert PCV hose by 25 to 30 mm (0.98 to 1.18 in) from connector end.
When installing, be careful not to twist or come in contact with other parts.
Install PCV hose between right and left rocker covers with its identification paint facing upward (right
rocker cover side). Refer to component figure in EM-51, "
Removal and Installation" .
8. Install in the reverse order of removal after this step. 1st step
: 1.96 Nꞏm (0.20 kg-m, 17 in-lb)
2nd step
: 8.33 Nꞏm (0.85 kg-m, 74 in-lb)
KBIA0985E

EM-54
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2006 January2006 M35/M45
FRONT TIMING CHAIN CASEPFP:13599
Removal and InstallationNBS004NI
NOTE:
This section describes removal/installation procedure of front timing chain case and timing chain related
parts without removing oil pan (upper) on the vehicle.
When oil pan (upper) needs to be removed or installed, or when rear timing chain case is removed or
installed, remove oil pans (upper and lower) first. Then remove front timing chain case, timing chain
related parts, and rear timing chain case in this order, and install in reverse order of removal. Refer to EM-
64, "TIMING CHAIN" .
Refer to EM-64, "TIMING CHAIN" for component parts location.
REMOVAL
1. Remove engine room cover (RH and LH). Refer to EM-14, "ENGINE ROOM COVER" .
2. Disconnect the battery cable from the negative terminal. Refer to SC-4, "
BATTERY" .
3. Remove engine cover with power tool. Refer to EM-19, "
INTAKE MANIFOLD COLLECTOR" .
4. Remove air duct (inlet) and air cleaner case assembly. Refer to EM-17, "
AIR CLEANER AND AIR DUCT"
.
5. Remove front and rear engine undercover with power tool.
6. Release the fuel pressure. Refer to EC-98, "
FUEL PRESSURE RELEASE" .
7. Drain engine oil. Refer to LU-9, "
Changing Engine Oil" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine oil on drive belts.
8. Drain engine coolant from radiator. Refer to CO-11, "
Changing Engine Coolant" .
CAUTION:
Perform this step when the engine is cold.
Do not spill engine coolant on drive belts.
9. Remove radiator hose (upper and lower) and A/T fluid cooler hose. Refer to CO-14, "
RADIATOR" .
10. Separate engine harnesses removing their brackets from front timing chain case.
11. Remove drive belts. Refer to EM-15, "
DRIVE BELTS" .
12. Remove intake manifold collectors (upper and lower). Refer to EM-19, "
INTAKE MANIFOLD COLLEC-
TOR" .
13. Remove power steering oil pump from bracket with piping connected, and temporarily secure it aside.
Refer to PS-29, "
POWER STEERING OIL PUMP" .
14. Remove power steering oil pump bracket. Refer to PS-29, "
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 intake valve timing control covers.
Loosen mounting bolts in reverse order as shown in the fig-
ure.
U s e t h 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
gasket for removal.
CAUTION:
Shaft is internally jointed with camshaft sprocket (INT) cen-
ter hole. When removing, keep it horizontal until it is com-
pletely disconnected.
SEM728G

FRONT TIMING CHAIN CASE
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18. Remove collared O-ring from front timing chain case (left and
right side).
19. Remove rocker covers (right and left banks). Refer toEM-51, "
ROCKER COVER" .
NOTE:
When only timing chain (primary) is removed, rocker cover does not need to be removed.
20. Obtain No. 1 cylinder at TDC of its compression stroke 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 that 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 degrees) and align
as shown in the figure.
NOTE:
When only timing chain (primary) is removed, rocker cover does
not need to be removed. To make sure 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-72,
"INSTALLATION" .
21. Remove crankshaft pulley as follows:
a. Remove rear cover plate (2WD models) or starter motor (AWD
models) and set ring gear stopper (SST) as shown in the figure.
Refer to SC-10, "
STARTING SYSTEM" .
PBIC2631E
KBIA1717J
SEM418G
PBIC1098E

EM-56
[VQ35DE]
FRONT TIMING CHAIN CASE
Revision: 2006 January2006 M35/M45
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.
c. Place suitable puller tab on holes of crankshaft pulley, and pull
crankshaft pulley through.
CAUTION:
Do not put suitable puller tab on crankshaft pulley periph-
ery, as this will damage internal damper.
22. Remove oil pan (lower). Refer to EM-29, "
OIL PAN AND OIL STRAINER" .
23. Loosen two mounting bolts in front of oil pan (upper) with power
tool in reverse order shown in figure.
24. Remove front timing chain case as follows:
a. Loosen mounting bolts with power tool in reverse order as
shown in the figure.
PBIC1103E
EMQ0477D
PBIC1116E
KBIA1303E

FRONT TIMING CHAIN CASE
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Revision: 2006 January2006 M35/M45
b. Insert suitable tool into the notch at the top of front timing chain
case as shown (1).
c. Pry off case by moving a tool as shown (2).
U s e t h 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
gasket for removal.
CAUTION:
Do not use a screwdrivers or something similar.
After removal, handle front timing chain case carefully
so it does not tilt, cant, or warp under a load.
25. Remove O-rings from rear timing chain case.
26. Remove oil pan gasket (front). Refer to EM-29, "
OIL PAN AND OIL STRAINER" .
27. Remove water pump cover and chain tensioner cover from front timing chain case, if necessary.
U s e t h 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 )] to cut liquid gasket for removal.
28. Remove front oil seal from front timing chain case using a suit-
able tool.
Use a screwdriver for removal.
CAUTION:
Exercise care not to damage front timing chain case.
29. Remove timing chain and related parts. Refer to EM-64, "
TIMING CHAIN" .
30. Use a scraper to remove all traces of old liquid gasket from front
and rear timing chain cases and oil pan (upper), and liquid gas-
ket mating surfaces.
CAUTION:
Be careful not to allow gasket fragments to enter oil pan.
SEM156F
PBIC2548E
EMQ0032D
SEM737G