OIL PAN AND OIL STRAINEREM-161
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• Run engine to check for unusual noise and vibration.
NOTE:
If hydraulic pressure inside timing chain tensioner dr ops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leak age of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec-
ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc. Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Transmission/
transaxle fluid A/T and CVT Models Leakage Level/Leakage Leakage
M/T Models Level/Leakage Leakage Level/Leakage
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gas — Leakage —
Revision: November 20132014 Altima NAM
FUEL INJECTOR AND FUEL TUBEEM-165
< REMOVAL AND INSTALLATION > [VQ35DE]
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10. Loosen bolts in reverse order as shown, and remove fuel tube
and fuel injector assembly.
CAUTION:
Do not tilt fuel tube, or remain ing fuel in pipes may flow out
from pipes.
11. Remove fuel injector from fuel tube as follows:
a. Open and remove clip (1).
b. Remove fuel injector (2) from fuel tube (5) by pulling straight. CAUTION:
• Do not reuse O-rings.
• Be careful with remaining fuel that may go out from fuel
tube.
• Be careful not to damage in jector nozzle during removal.
• Do not bump or drop fuel injector.
• Do not disassemble fuel injector.
12. Remove fuel damper from fuel tube, (if necessary).
INSTALLATION
1. Install fuel damper as follows:
a. Install new O-ring (2) to fuel tube (1) as shown. When handling new O-ring, be careful of the following:
CAUTION:
• Do not reuse O-ring.
• Handle O-ring with bare hands. Do not wear gloves.
• Lubricate O-ring with new engine oil.
• Do not clean O-ring with solvent.
• Check that O-ring and its mating part are free of foreign material.
• When installing O-ring, be car eful 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 twist it.
b. Install spacer (3) to fuel damper (4).
c. Insert fuel damper straight into fuel tube. CAUTION:
• Insert straight, checking that the axis is lined up.
• Do not pressure-fit with excessive force.
• Insert fuel damper until (B) is touching (A) of fuel tube.
d. Tighten bolts evenly in turn. • After tightening bolts, check that there is no gap between fuel damper cap (5) and fuel tube.
2. Install new O-rings to fuel injector paying attention to the following. CAUTION:
: Engine front
JPBIA1715ZZ
(3) : O-ring (green)
(4) : O-ring (black)
(A) : Installed condition
(B) : Clip groove
JPBIA1958ZZ
Reference value : 130 N (13.3 kg, 29.2 lb)
JPBIA0316ZZ
Revision: November 20132014 Altima NAM
EM-166
< REMOVAL AND INSTALLATION >[VQ35DE]
FUEL INJECTOR AND FUEL TUBE
• Do not reuse O-rings.
• Upper and lower O-rings 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.
• Check that O-ring and its mating pa rt 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 stretc hed while it was being attached, do not insert it
quickly into fuel tube.
• Insert O-ring straight into fu el injector. Do not twist it.
3. Install fuel injector to fuel tube as follows:
a. Insert clip (3) into clip groove (F) on fuel injector (5).
• Insert clip so that protrusion (E ) of fuel injector matches cutout
(C) of clip.
CAUTION:
• Do not reuse O-rings.
• Do not reuse clip. Replace it with 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 (1) with clip attached. • Insert it while matching it to the axial center.
• Insert fuel injector so that protrusion (A) of fuel tube matches
cutout (B) of clip.
• Check that fuel tube flange (G) is securely fixed in flange fixing
groove (D) on clip.
c. Check that installation is complete by checking that fuel injector does not rotate or come off.
• Check that protrusions of fuel injectors and fuel tubes are
aligned with cutouts of clips after installation.
4. 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.
• Tighten bolts in two steps in numerical order as shown.
5. Connect fuel injector harness.
6. Install intake manifold collector. Refer to EM-146, "Removal and Installation"
.
7. Connect quick connector between fuel feed hose and fuel tube connection with the following procedure:
a. Check no foreign substances are deposited in and around fuel tube and quick connector, and no damage on them.Fuel tube side : Black
Nozzle side : Green
(2) : O-ring (black)
(4) : O-ring (green)
JPBIA1959ZZ
: Engine front
1st step : 10.1 N·m (1.0 kg-m, 7 ft-lb)
2nd step : 22.0 N·m (2.2 kg-m, 16 ft-lb)
JPBIA1715ZZ
Revision: November 20132014 Altima NAM
FUEL INJECTOR AND FUEL TUBEEM-167
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b. Thinly apply new engine oil around fuel tube from tip end to spool end.
c. Align center to insert quick connector straightly into fuel tube. • Insert quick connector (1) to fuel tube until top spool (2) is
completely inside quick connector, and 2nd level spool (3)
exposes right below quick connector.
CAUTION:
• Do not reuse O-ring.
• Hold (A) position as shown when inserting fuel tube 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 enga gement with a similar sound, be sure to perform the next step.
d. Pull quick connector by hand holding position. Check it is completely engaged (connected) so that it does
not come out from fuel tube.
e. Install quick connector cap (3) to quick connector.
• Install quick connector cap with arrow (A) on surface facing indirection 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
connection again.
f. Secure fuel feed hose to clamp of quick connector cap.
8. Installation of the remaining components is in the reverse order of removal.
INSPECTION AFTER INSTALLATION
Make sure there is no fuel leakage at connections as follows:
1. Apply fuel pressure to fuel lines by turning i gnition switch ON (with engine stopped). Then check for fuel
leaks at connections.
2. Start the engine and rev it up and check for fuel leaks at connections. WARNING:
Do not touch engine immediately after stopping as engine is extremely hot.
NOTE:
Use mirrors for checking on connections out of the direct line of sight.
• Perform procedures for “Throttle Valve Closed Position Learning” after finishing repairs. Refer to EC-
682, "Work Procedure".
• If electric throttle control actuator is replaced, perform procedures for “Idle Air Volume Learning” after
finishing repairs. Refer to EC-683, "Work Procedure"
.
(B) : Installed condition
: Upright insertion
(1) : Fuel feed hose
(2) : Fuel tube
(B) : Upper view
JPBIA0275ZZ
JPBIA0039ZZ
Revision: November 20132014 Altima NAM
FRONT TIMING CHAIN CASEEM-175
< REMOVAL AND INSTALLATION > [VQ35DE]
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REMOVAL
1. Remove engine under cover. Refer to
EXT-28, "Removal and Installation".
2. Drain the engine coolant from the radiator. Refer to MA-23, "ENGINE COOLANT : Changing Engine Cool-
ant".
3. Drain the engine oil. Refer to MA-27, "ENGINE OIL : Changing Engine Oil"
.
4. Drain the power steering fluid. Refer to ST-30, "Draining and Refilling"
.
5. Remove engine room cover. Refer to EM-143, "Removal and Installation"
.
6. Remove front air duct. Refer to EM-144, "Removal and Installation"
.
7. Remove battery tray. Refer to PG-74, "Removal and Installation (Battery Tray)"
.
8. Remove the hood ledge covers (LH/RH).
9. Remove cowl top and cowl top extension. Refer to EXT-24, "Removal and Installation"
.
10. Remove upper radiator hose.
11. Disconnect engine coolant reservoir hose from t he radiator and remove engine coolant reservoir.
12. Remove cooling fan assembly. Refer to CO-42, "Removal and Installation"
.
13. Disconnect lower radiator hose from engine.
14. Remove the radiator. Refer to CO-41, "Removal and Installation"
.
15. Disconnect the power steering fluid reservoir tank hose from the power steering pump and fluid cooler and
remove the power steering fluid reservoir tank. Refer to ST-38, "Exploded View"
.
16. Remove the front RH wheel and tire. Refer to MA-39, "WHEELS : Adjustment"
.
17. Remove the fender protector side cover (RH). Refer to EXT-26, "FENDER PROTECTOR : Removal and
Installation".
18. Remove the drive belt. Refer to EM-134, "Removal and Installation"
.
19. Remove the rocker covers, if necessary. Refer to EM-168, "Removal and Installation LH"
and EM-169,
"Removal and Installation RH".
NOTE:
Necessary only when removing timing chains.
20. If removing the timing chains, obtain compression TDC of No. 1 cylinder as follows:
a. Rotate crankshaft pulley clockwise to align timing mark (grooved line without color) with timing indicator.
b. Check that intake and exhaust camshaft lobes on No. 1 cylinder (right bank of engine) are located as shown.
• If not, turn the crankshaft one revolution (360 °) and align as
shown.
21. Remove the access plate and lock the ring gear using Tool. CAUTION:
JMBIA1135GB
SEM418G
Tool number : — (J-50288)
Revision: November 20132014 Altima NAM
FRONT TIMING CHAIN CASEEM-181
< REMOVAL AND INSTALLATION > [VQ35DE]
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• Before starting engine, check oil/fluid levels incl
uding engine coolant and engine oil. If less than required
quantity, fill to the specified level. Refer to MA-11, "FOR USA AND CANADA : 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 leak-
age 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 dr ops after removal and installation, slack in the guide
may generate a pounding noise during and just after engine start. However, this is normal. Noise will stop
after hydraulic pressure rises.
• Warm up engine thoroughly to make sure there is no leak age of fuel, exhaust gas, or any oils/fluids including
engine oil and engine coolant.
• Bleed air from passages in lines and hoses, such as in cooling system.
• After cooling down engine, again check oil/fluid levels including engine oil and engine coolant. Refill to spec- ified level, if necessary.
• Summary of the inspection items:
*Power steering fluid, brake fluid, etc. Item Before starting engine Engine running After engine stopped
Engine coolant Level Leakage Level
Engine oil Level Leakage Level
Transmission/
transaxle fluid CVT Models Leakage Level/Leakage Leakage
Other oils and fluids* Level Leakage Level
Fuel Leakage Leakage Leakage
Exhaust gas — Leakage —
Revision: November 20132014 Altima NAM
EM-202
< REMOVAL AND INSTALLATION >[VQ35DE]
CAMSHAFT
• Using inside micrometer, measure diameter of valve lifter bore of
cylinder head. Refer to EM-247, "Camshaft"
EM-247, "Camshaft".
• If out of the specified range, replace the cylinder head assembly.
Calculation of Valve Lifter Clearance
• (Valve lifter clearance) = (hole diameter for valve li fter) – (outer diameter of valve lifter) Refer to EM-247,
"Camshaft".
• If out of specified range, replace either or both valve lifter and cylinder head assembly.
Inspection after InstallationINFOID:0000000009460570
INSPECTION OF CAMSHAFT SPROCKET (INT) OIL GROOVE
WARNING:
• Check when engine is cold so as to pr event burns from any splashing engine oil.
CAUTION:
• Perform this inspection only when DTC P0011 is detected in self-diagnostic results of CONSULT and
it is directed according to inspection procedure of EC section. Refer to EC-716, "Diagnosis Proce-
dure".
1. Check engine oil level. Refer to MA-26, "ENGINE OIL : Inspection"
.
2. Perform the following procedure so as to prevent the engine from being unintentionally started while
checking.
a. Release fuel pressure. Refer to FL-5, "Inspection"
.
b. Disconnect ignition coil and injector harness connectors if practical.
3. Remove intake valve timing control solenoid valve.
4. Crank engine, and then make sure that engine oil comes out from intake valve timing control solenoid valve cover oil hole.
End cranking after checking.
WARNING:
Be careful not to touch rotating parts (drive belts, idler pul-
ley, and crankshaft pulley, etc.).
CAUTION:
• Engine oil may squirt from intake valve timing control solenoid valve installation hole during cranking. Use a
shop cloth to prevent engi ne oil from splashing on
worker, engine components and vehicle.
• Do not allow engine oil to get on rubber components such
as drive belts or engine mount insulators. I mmediately wipe off any splashed engine oil.
5. 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 solenoid valve cover oil hole.
6. Remove components between intake valve timing c ontrol solenoid valve and camshaft sprocket (INT),
and then check each oil groove for clogging.
• Clean oil groove if necessary.
7. After inspection, installation of the remaining components is in the reverse order of removal.
SEM867E
KBIA2686E
Revision: November 20132014 Altima NAM
CYLINDER HEADEM-215
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5. Using a valve guide reamer, apply a reamer finish to the valve
guide.
VALVE SEAT CONTACT
• After confirming that the dimensions of valve guides and valves are
within specifications, perform this procedure.
• Apply prussian blue onto contacting surface of valve seat to check the condition of the valve contact on the surface.
• Check if the contact area band is continuous all around the circum- ference.
• If not, grind to adjust valve fitti ng and check again. If the contacting
surface still has NG conditions even after the re-check, replace
valve seat.
VALVE SEAT REPLACEMENT
1. Bore out old seat until it collapses. Boring should not continue beyond the bottom face of the seat recess in cylinder head. Set
the machine depth stop to ensure this.
2. Ream cylinder head recess for service valve seat.
Be sure to ream in circles co ncentric to the valve guide cen-
ter.
This will enable valve seat to fit correctly.
3. Heat cylinder head to 110 ° to 130 °C (230 ° to 266 °F) by soaking
in heated oil.
WARNING:
Cylinder head contains heat . When working, wear protec-
tive equipment to avo id getting burned.
4. Press fit valve seat until it seats on the bottom.
5. Cut or grind valve seat using suitable t ool to the specified dimensions. Refer to EM-249, "Cylinder Head"
.
6. After cutting, lap valve seat with abrasive compound.
7. Check valve seating condition. Intake and exhaust
finished size : 6.000 - 6.018 mm
(0.2362 - 0.2369 in)
SEM932C
SBIA0322E
Oversize : 0.5 mm (0.020 in)
Intake : 38.500 - 38.516 mm (1.5157 - 1.5164 in)
Exhaust : 32.100 - 32.116 mm (1.2638 - 1.2644 in)
SEM795A
SEM008A
Revision: November 20132014 Altima NAM