EM-102
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CYLINDER BLOCK
• Calculate by outer diameter of piston skirt and i
nner diameter of cylinder (direction X, position B).
(Clearance) = (Inner diameter of cylinde r) – (Outer diameter of piston skirt).
• If it exceeds the limit, replace piston/piston pin assembly.
Reboring Cylinder Bore
1. Cylinder bore size is determined by adding pi ston-to-bore clearance to piston diameter (A).
2. Install lower cylinder block, and tighten to the specif ied torque. Otherwise, cylinder bores may be distorted
in final assembly.
3. Cut cylinder bores.
• When any cylinder needs boring, all ot her cylinders must also be bored.
• Do not cut too much out of cylinder bore at a time . Cut only 0.05 mm (0.0020 in) or so in diameter at
a time.
4. Hone cylinders to obtain specified piston-to-bore clearance.
5. Measure finished cylinder bore for out-of-round and taper.
• Measurement should be done af ter cylinder bore cools down.
OUTER DIAMETER OF CRANKSHAFT JOURNAL
• Measure outer diameter of crankshaft journals using suitable tool
(A).
OUTER DIAMETER OF CRANKSHAFT PIN
• Measure outer diameter of crankshaft pin using a suitable tool.
OUT-OF-ROUND AND TAPER OF CRANKSHAFT
• Measure the dimensions at four different points as shown on eachjournal and pin using a micrometer.
• Out-of-round is indicated by the difference in dimensions between
(X) and (Y) at (A) and (B).
• Taper is indicated by the difference in dimension between (A) and (B) at (X) and (Y). Standard : 0.010 - 0.030 mm (0.0004 - 0.0012 in)
Limit : 0.08 mm (0.0031 in)
Rebored size calculation: D = A + B - C
(D): Bored diameter
(A): Piston diameter as measured
(B): Piston-to-bore clearance (standard value)
(C): Honing allowance 0.02 mm (0.0008 in)
Standard : 54.955 - 54.979 mm (2.1636 - 2.1645 in)
AWBIA1331GB
Standard : 44.956 - 44.974 mm (1.7699 - 1.7706 in)
Standard
Out-of-round (X - Y) : 0.005 mm (0.0002 in)
Taper (A - B) : 0.005 mm (0.0002 in)
AWBIA1368ZZ
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CYLINDER BLOCKEM-103
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CRANKSHAFT RUNOUT
• Place a V-block on a precise flat table to support the journals on
both ends of the crankshaft.
• Place a dial gauge (A) straight up on the No. 3 journal.
• While rotating the crankshaft, read the movement of the pointer on the dial gauge (A), the total indicator runout reading.
OIL CLEARANCE OF CONNECTING ROD BEARING
Method of Measurement
• Install the connecting rod bearings (2) to the connecting rod (3)
and the cap (1), and tighten the c onnecting rod bolts to the speci-
fied torque. Using a inside micrometer measure the inner diameter
of connecting rod bearing (B).
(Oil clearance) = (Inner diameter of connecting rod bearing) –
(Outer diameter of crankshaft pin)
• If clearance cannot be adjusted within the standard, grind crankshaft pin and use undersized bearing. Refer
to EM-105, "How to Select Piston and Bearing"
.
Method of Using Plastigage
• Remove oil and dust on the crankshaft pin and the surfaces of
each bearing completely.
• Cut the Plastigage slightly shorter than the bearing width, and place it in crankshaft axial direction, avoiding oil holes.
• Install the connecting rod bearings to the connecting rod cap, and tighten the connecting rod bolts to the specified torque.
CAUTION:
Do not rotate the crankshaft.
• Remove the connecting rod cap and bearings, and using the scale on the Plastigage bag, measure the Plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the method by calculation.
OIL CLEARANCE OF MAIN BEARING
Method of Measurement
• Install the main bearings to the cylinder block and bearing cap. Measure the main bearing inner diameter with the bearing cap bolt tightened to the specified torque.
(Oil clearance) = (Inner diameter of main beari ng) – (Outer diameter of crankshaft journal)
• If the measured value exceeds the limit, select main bearings referring to the main bearing inner diameter
and crankshaft journal outer diameter, so that t he oil clearance satisfies the standard. Refer to EM-105,
"How to Select Piston and Bearing".
Limit : Less than 0.05 mm (0.002 in)
AWBIA1367ZZ
(A) Example
Standard : 0.035 - 0.045 mm (0.0014 - 0.0018 in)
Limit : 0.10 mm (0.0039 in)
AWBIA1369ZZ
EM142
Standard:
No. 1, 3, and 5 journals : 0.012 - 0.022 mm (0.0005 - 0.0009 in)
No. 2 and 4 journals : 0.018 - 0.028 mm (0.0007 - 0.0011 in)
Limit : 0.1 mm (0.004 in)
Revision: November 20132014 Altima NAM
EM-104
< UNIT DISASSEMBLY AND ASSEMBLY >[QR25DE]
CYLINDER BLOCK
Method of Using Plastigage
• Remove oil and dust on the crankshaft journal and the surfaces of
each bearing completely.
• Cut the Plastigage slightly shorter than the bearing width, and
place it in crankshaft axial direction, avoiding oil holes.
• Tighten the main bearing bolts to the specified torque. CAUTION:
Do not rotate the crankshaft.
• Remove the bearing cap and bearings, and using the scale on the Plastigage bag, measure the Plastigage width.
NOTE:
The procedure when the measured value exceeds the limit is
same as that described in the "Method by Calculation".
CRUSH HEIGHT OF MAIN BEARING
• When the bearing cap is removed after being tightened to the specified torque with main bearings installed, the tip end of bearing
must protrude.
• If the standard is not met, replace main bearings.
OUTER DIAMETER OF LOWER CYLINDER BLOCK BOLT
• Perform only with M10 (0.39 in) bolts.
• Measure outer diameters (d1, d2) at two positions as shown.
• Measure d2 at a point within area (A) as shown.
• When the value of d1- d2 exceeds the limit (a large difference in dimensions), replace the bolt with a new one.
OUTER DIAMETER OF CONNECTING ROD BOLT
• Measure outer diameter (d) at position as shown.
• When (d) exceeds the limit (when it becomes thinner), replace the
bolt with a new one.
EM142
Standard : There must be crush height.
SEM502G
Limit : 0.13 mm (0.0051 in)
PBIC0272E
Limit : 7.75 mm (0.3051 in) or less
PBIC0273E
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PRECAUTIONSEM-123
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PRECAUTION
PRECAUTIONS
Precaution for Supplemental
Restraint System (SRS) "AIR BAG" and "SEAT BELT
PRE-TENSIONER"
INFOID:0000000009951676
The Supplemental Restraint System such as “A IR BAG” and “SEAT BELT PRE-TENSIONER”, used along
with a front seat belt, helps to reduce the risk or severi ty of injury to the driver and front passenger for certain
types of collision. Information necessary to service t he system safely is included in the SR and SB section of
this Service Manual.
WARNING:
• To avoid rendering the SRS inoper ative, which could increase the risk of personal injury or death in
the event of a collision which would result in air bag inflation, all maintenance must be performed by
an authorized NISSAN/INFINITI dealer.
• Improper maintenance, including in correct removal and installation of the SRS, can lead to personal
injury caused by unintentional act ivation of the system. For removal of Spiral Cable and Air Bag
Module, see the SR section.
• Do not use electrical test equipm ent on any circuit related to the SRS unless instructed to in this
Service Manual. SRS wiring harnesses can be identi fied by yellow and/or orange harnesses or har-
ness connectors.
PRECAUTIONS WHEN USING POWER TOOLS (AIR OR ELECTRIC) AND HAMMERS
WARNING:
• When working near the Airbag Diagnosis Sensor Un it or other Airbag System sensors with the Igni-
tion ON or engine running, DO NOT use air or el ectric power tools or strike near the sensor(s) with a
hammer. Heavy vibration could activate the sensor( s) and deploy the air bag(s), possibly causing
serious injury.
• When using air or electric power tools or hammers , always switch the Ignition OFF, disconnect the
battery and wait at least three mi nutes before performing any service.
Precaution for Draining CoolantINFOID:0000000009460515
• Drain coolant when engine is cooled.
Precaution for Disconnecting Fuel PipingINFOID:0000000009460516
• Before starting work, make sure no fire or spark producing items are in the work area.
• Release fuel pressure before disassembly.
• After disconnecting pipes, plug openings to stop fuel leakage.
Precaution for Removal and DisassemblyINFOID:0000000009460517
• When instructed to use special service tools, use the spec ified tools. Always be careful to work safely, avoid
forceful or uninstructed operations.
• Exercise maximum care to avoid damage to mating or sliding surfaces.
• Cover openings of engine system with tape or the equiva lent, if necessary, to seal out foreign materials.
• Mark and arrange disassembly parts in an organized way for easy troubleshooting and assembly.
• When loosening nuts and bolts, as a basic rule, start with the one furthest outside, then the one diagonally
opposite, and so on. If the order of loosening is specif ied, do exactly as specified. Power tools may be used
where noted in the step.
Precaution for Inspection, Repair and ReplacementINFOID:0000000009460518
• Before repairing or replacing, thoroughly inspect parts. Inspect new replacement parts in the same way, and
replace if necessary.
Precaution for Assembly and InstallationINFOID:0000000009460519
• Use torque wrench to tighten bolts or nuts to specification.
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EM-124
< PRECAUTION >[VQ35DE]
PRECAUTIONS
• When tightening nuts and bolts, as a basic rule, equally tighten in several different steps starting with the
ones in center, then ones on inside and outside diagonally in this order. If the order of tightening is specified,
do exactly as specified.
• Replace with new gasket, packing, oil seal or O-ring.
• Thoroughly wash, clean, and air-blow each part. Carefully check oil or coolant passages for any restriction and blockage.
• Avoid damaging sliding or mating surfaces. Completely remove foreign materials such as cloth lint or dust. Before assembly, oil sliding surfaces well.
• Release air within route after draining coolant.
• Before starting engine, apply fuel pressure to fuel li nes with turning ignition switch ON (with engine stopped).
Then make sure that there are no leaks at fuel line connections.
• After repairing, start engine and increase engine speed to check coolant, fuel, oil, and exhaust systems for leakage.
Parts Requiring Angular TighteningINFOID:0000000009460520
• Use an angle wrench for the final tightening of the following engine parts:
- Cylinder head bolts
- Main bearing cap bolts
- Connecting rod cap nuts
- Crankshaft pulley bolt (No angle wrench is required as the bolt flange is provided with notches for angular
tightening)
• Do not use a torque value for final tightening.
• The torque value for these parts are for a preliminary step.
• Ensure thread and seat surfaces are clean and coated with engine oil.
Precaution for Liquid GasketINFOID:0000000009460521
REMOVAL OF LIQUID GASKET
• After removing the bolts and nuts, separate the mating surface and remove the liquid gasket using Tool (A).
CAUTION:
Be careful not to damage the mating surfaces.
• In areas where the cutter is difficult to use, use a plastic hammer to lightly tap (1) the cutter where the liquid gasket is applied. Use a
plastic hammer to slide (2) the cutter by tapping on the side.
CAUTION:
Do not damage the mating surfaces.
LIQUID GASKET APPLICATION PROCEDURE
1. Using a scraper, remove the old liquid gasket adhering to the gasket application surface and the mating surface.
• Remove the liquid gasket completely from the groove of the
gasket application surface, mounting bolts, and bolt holes.
2. Thoroughly clean the gasket application surface and the mating surface and remove adhering moisture, grease and foreign
materials.
3. Attach the liquid gasket tube to the tube presser. Use Genuine Silicone RTV Seal ant or equivalent. Refer to
GI-21, "Recommended Chemi cal Products and Sealants"
.
Tool Number: KV10111100 (J-37228)
AWBIA1249GB
PBIC0003E
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OIL PAN AND OIL STRAINEREM-159
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14. Remove front cover gasket and rear oil seal retainer gasket.
CAUTION:
Do not reuse gaskets.
15. Remove the oil strainer.
16. If re-installing the original oil pan, remove the old sealant from the mating surfaces using a scraper.
• Also remove the old sealant from mating surface of the cylin-
der block.
• Remove the old sealant from the bolt holes and threads.
CAUTION:
Do not scratch or damage th e mating surfaces when clean-
ing off the old sealant.
INSPECTION AFTER REMOVAL
Clean oil strainer if any object is attached.
INSTALLATION
1. Install oil strainer and tighten bolts to specified torque. Refer to EM-156, "Exploded View".
2. Apply Genuine Silicone RTV Sealant or equivalent, to the front cover gasket and the rear oil seal retainer gasket as shown.
Refer to GI-21, "Recommended Chemical Products and Seal-
ants".
CAUTION:
The components must be installed within 5 minutes of the
liquid gasket appli cation. Then allow 30 minutes for the liq-
uid gasket to set before operating the engine.
3. Install the front cover gasket and rear oil seal retainer gasket as shown.
CAUTION:
Do not reuse gaskets.
WBIA0328E
MEM108A
SEM964E
WBIA0328E
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INTAKE VALVE TIMING CONTROLEM-173
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5. Remove intake valve timing control solenoid valve (LH) (bank 2) and O-ring from intake valve timing con-
trol solenoid valve cover (LH) (bank 2).
CAUTION:
Do not reuse O-ring.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-ring.
• Replace the O-ring for the intake valve timing cont rol solenoid valve LH (bank 2) with a new one,
then lubricate O-ring with engine oil before installing.
Intake Valve Timing Control Solenoid Valve (RH) (bank 1)INFOID:0000000009460561
REMOVAL
1. Remove hood ledge cover.
2. Remove coolant reservoir and set aside.
3. Support engine using suitable tool.
4. Remove upper torque rod, engine mounting insulato r (RH), and engine mounting bracket (RH). Refer to
EM-220, "Removal and Installation"
.
5. Disconnect intake valve timing control solenoid valve (RH) (bank 1) harness connector.
6. Remove intake valve timing control solenoid valve ( RH) (bank 1) and O-ring from intake valve timing con-
trol solenoid valve cover (RH) (bank 1).
CAUTION:
Do not reuse O-ring.
INSTALLATION
Installation is in the reverse order of removal.
CAUTION:
• Do not reuse O-ring.
• Replace the O-ring for the intake valve timing contro l solenoid valve (RH) (bank 1) with a new one,
then lubricate O-ring with engine oil before installing.
Revision: November 20132014 Altima NAM
EM-176
< REMOVAL AND INSTALLATION >[VQ35DE]
FRONT TIMING CHAIN CASE
Do not damage the ring gear teeth, or the signal
plate teeth behind the ring gear, when installing
Tool.
22. Remove the crankshaft pulley as follows:
a. Loosen crankshaft pulley and locate bolt seating surfac e at 10 mm (0.39 in) from its original position.
b. Position a pulley puller at recess hole of crankshaft pulley to remove crankshaft pulley.
CAUTION:
Do not use a puller claw on crankshaft pulley periphery.
23. Remove the power steering pump. Refer to ST-38, "Removal and Installation"
.
24. Remove the lower oil pan. Refer to EM-156, "Removal and Installation (Lower Oil Pan)"
.
25. Remove upper oil pan bolts (1) and (2) as shown. Refer to EM-
157, "Removal and Installation (Upper Oil Pan)".
26. Remove the generator. Refer to CHG-32, "Removal and Installation"
.
27. Disconnect the A/C tubes from the A/C compressor and position aside. Refer to HA-23, "Recycle Refriger-
ant".
28. Remove the A/C compressor bolts and the A/C compressor. Refer to HA-30, "COMPRESSOR : Removal
and Installation".
29. Remove the generator bracket. Refer to CHG-32, "Removal and Installation"
.
30. Support the engine with suitable jack and remove the RH engine insulator, mount and torque rod. Refer to EM-220, "Removal and Installation"
.
31. Disconnect the oil pressure switch harness connector.
32. Disconnect the intake valve timing control solenoid valve harness connector.
33. Remove the intake valve timing control solenoid valve cover bank 1 (RH) (A) and intake timing control solenoid valve cover
bank 2 (LH) (B).
• Loosen the intake valve timing control solenoid valve cover bolts in the reverse order as shown.
CAUTION:
The shaft in the intake valve ti ming control solenoid valve
cover is inserted into the center hole of the intake cam-
shaft sprocket. Remove the in take valve timing control
solenoid valve cover by pull ing straight out until the
intake valve timing control so lenoid valve cover disengages from the camshaft sprocket.
34. Remove the drive belt auto-tensioner. Refer to EM-134, "Removal and Installation"
.
35. If necessary, remove the water pump cover.
EMQ0477D
WBIA0259E
(C) : Dowel pin hole
JPBIA1639ZZ
Revision: November 20132014 Altima NAM